./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Lin/chc-comp24-LIA-Lin-171.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:26,110 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:26,216 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c0bc6e8-9b2d-4f87-a1de-dbd2f6d5687b/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:26,224 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:26,225 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:26,259 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:26,260 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:26,260 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:26,260 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:26,260 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:26,261 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:26,261 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:26,262 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:26,262 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:26,263 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:26,264 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:26,264 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:26,264 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:26,265 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:26,265 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:26,265 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:26,265 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:26,265 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:26,265 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:26,265 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:26,266 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:26,267 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:26,569 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:26,577 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:26,579 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:26,581 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:26,581 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:26,584 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c0bc6e8-9b2d-4f87-a1de-dbd2f6d5687b/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Lin/chc-comp24-LIA-Lin-171.smt2
[2025-04-28 21:21:26,585 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:26,591 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:26,816 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c0bc6e8-9b2d-4f87-a1de-dbd2f6d5687b/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Lin/chc-comp24-LIA-Lin-171.smt2
[2025-04-28 21:21:26,820 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:26,822 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:26,824 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:26,824 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:26,824 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:26,827 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,856 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26 Unit
[2025-04-28 21:21:26,857 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:26,859 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:26,859 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:26,859 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:26,877 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,877 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,904 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,906 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,909 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,910 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,912 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,913 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,914 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,939 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:26,940 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:26,940 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:26,940 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:26,941 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (1/1) ...
[2025-04-28 21:21:26,945 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:26,962 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:26,983 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2025-04-28 21:21:26,987 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2025-04-28 21:21:27,003 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:27,004 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:27,004 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:27,004 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main given in one single declaration
[2025-04-28 21:21:27,004 INFO  L130     BoogieDeclarations]: Found specification of procedure %main
[2025-04-28 21:21:27,004 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main
[2025-04-28 21:21:27,005 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main.1 given in one single declaration
[2025-04-28 21:21:27,005 INFO  L130     BoogieDeclarations]: Found specification of procedure %main.1
[2025-04-28 21:21:27,005 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main.1
[2025-04-28 21:21:27,006 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main.5 given in one single declaration
[2025-04-28 21:21:27,006 INFO  L130     BoogieDeclarations]: Found specification of procedure %main.5
[2025-04-28 21:21:27,006 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main.5
[2025-04-28 21:21:27,006 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main.9 given in one single declaration
[2025-04-28 21:21:27,007 INFO  L130     BoogieDeclarations]: Found specification of procedure %main.9
[2025-04-28 21:21:27,007 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main.9
[2025-04-28 21:21:27,007 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main.13 given in one single declaration
[2025-04-28 21:21:27,007 INFO  L130     BoogieDeclarations]: Found specification of procedure %main.13
[2025-04-28 21:21:27,008 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main.13
[2025-04-28 21:21:27,008 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main.17 given in one single declaration
[2025-04-28 21:21:27,008 INFO  L130     BoogieDeclarations]: Found specification of procedure %main.17
[2025-04-28 21:21:27,008 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main.17
[2025-04-28 21:21:27,008 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main.21 given in one single declaration
[2025-04-28 21:21:27,008 INFO  L130     BoogieDeclarations]: Found specification of procedure %main.21
[2025-04-28 21:21:27,009 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main.21
[2025-04-28 21:21:27,009 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure %main.24 given in one single declaration
[2025-04-28 21:21:27,009 INFO  L130     BoogieDeclarations]: Found specification of procedure %main.24
[2025-04-28 21:21:27,009 INFO  L138     BoogieDeclarations]: Found implementation of procedure %main.24
[2025-04-28 21:21:27,010 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:27,010 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:27,010 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:27,080 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:27,083 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:27,281 INFO  L?                        ?]: Removed 2 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:27,281 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:27,301 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:27,301 INFO  L312             CfgBuilder]: Removed 0 assume(true) statements.
[2025-04-28 21:21:27,301 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:27 BoogieIcfgContainer
[2025-04-28 21:21:27,302 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:27,305 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:27,305 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:27,310 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:27,310 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:26" (1/3) ...
[2025-04-28 21:21:27,311 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da1a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:27, skipping insertion in model container
[2025-04-28 21:21:27,311 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:26" (2/3) ...
[2025-04-28 21:21:27,311 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da1a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:27, skipping insertion in model container
[2025-04-28 21:21:27,311 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:27" (3/3) ...
[2025-04-28 21:21:27,313 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:27,331 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:27,333 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 10 procedures, 46 locations, 73 edges, 10 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:27,378 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:27,391 INFO  L340      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f525979, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:27,391 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:27,400 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 46 states, 20 states have (on average 1.4) internal successors, (28), 27 states have internal predecessors, (28), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 15 states have call successors, (15)
[2025-04-28 21:21:27,413 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:27,413 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:27,414 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:27,414 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:27,419 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:27,420 INFO  L85        PathProgramCache]: Analyzing trace with hash 762067243, now seen corresponding path program 1 times
[2025-04-28 21:21:27,426 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:27,426 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631921814]
[2025-04-28 21:21:27,426 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:27,427 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:27,463 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:27,500 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:27,500 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:27,500 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:28,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:28,121 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:28,122 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631921814]
[2025-04-28 21:21:28,122 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631921814] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:28,122 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:28,125 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2025-04-28 21:21:28,127 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599568051]
[2025-04-28 21:21:28,127 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:28,131 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2025-04-28 21:21:28,132 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:28,157 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2025-04-28 21:21:28,157 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2025-04-28 21:21:28,159 INFO  L87              Difference]: Start difference. First operand  has 46 states, 20 states have (on average 1.4) internal successors, (28), 27 states have internal predecessors, (28), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 15 states have call successors, (15) Second operand  has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9)
[2025-04-28 21:21:28,374 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:28,374 INFO  L93              Difference]: Finished difference Result 60 states and 77 transitions.
[2025-04-28 21:21:28,376 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2025-04-28 21:21:28,377 INFO  L79                 Accepts]: Start accepts. Automaton has  has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) Word has length 37
[2025-04-28 21:21:28,378 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:28,385 INFO  L225             Difference]: With dead ends: 60
[2025-04-28 21:21:28,385 INFO  L226             Difference]: Without dead ends: 44
[2025-04-28 21:21:28,387 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110
[2025-04-28 21:21:28,393 INFO  L437           NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:28,395 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 424 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:28,432 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2025-04-28 21:21:28,462 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2025-04-28 21:21:28,463 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 44 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 25 states have internal predecessors, (25), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 9 states have call predecessors, (15), 15 states have call successors, (15)
[2025-04-28 21:21:28,521 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions.
[2025-04-28 21:21:28,523 INFO  L79                 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 37
[2025-04-28 21:21:28,523 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:28,523 INFO  L485      AbstractCegarLoop]: Abstraction has 44 states and 55 transitions.
[2025-04-28 21:21:28,523 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9)
[2025-04-28 21:21:28,524 INFO  L278                IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions.
[2025-04-28 21:21:28,528 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:28,529 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:28,529 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:28,530 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:28,530 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:28,533 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:28,533 INFO  L85        PathProgramCache]: Analyzing trace with hash 1937253260, now seen corresponding path program 1 times
[2025-04-28 21:21:28,534 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:28,534 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679787525]
[2025-04-28 21:21:28,534 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:28,534 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:28,553 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:28,574 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:28,574 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:28,574 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:29,196 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:29,197 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:29,197 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679787525]
[2025-04-28 21:21:29,198 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679787525] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:29,198 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:29,198 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:29,198 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577441353]
[2025-04-28 21:21:29,198 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:29,200 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:29,200 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:29,201 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:29,202 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:29,202 INFO  L87              Difference]: Start difference. First operand 44 states and 55 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:29,624 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:29,624 INFO  L93              Difference]: Finished difference Result 50 states and 61 transitions.
[2025-04-28 21:21:29,624 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:29,625 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:29,625 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:29,626 INFO  L225             Difference]: With dead ends: 50
[2025-04-28 21:21:29,626 INFO  L226             Difference]: Without dead ends: 48
[2025-04-28 21:21:29,627 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:29,628 INFO  L437           NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:29,628 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 583 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:29,629 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2025-04-28 21:21:29,637 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46.
[2025-04-28 21:21:29,637 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46 states, 20 states have (on average 1.3) internal successors, (26), 26 states have internal predecessors, (26), 15 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (16), 10 states have call predecessors, (16), 15 states have call successors, (16)
[2025-04-28 21:21:29,638 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions.
[2025-04-28 21:21:29,639 INFO  L79                 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 37
[2025-04-28 21:21:29,639 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:29,639 INFO  L485      AbstractCegarLoop]: Abstraction has 46 states and 57 transitions.
[2025-04-28 21:21:29,639 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:29,639 INFO  L278                IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions.
[2025-04-28 21:21:29,642 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:29,642 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:29,642 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:29,642 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:29,642 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:29,644 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:29,645 INFO  L85        PathProgramCache]: Analyzing trace with hash 1361602630, now seen corresponding path program 1 times
[2025-04-28 21:21:29,645 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:29,645 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809496903]
[2025-04-28 21:21:29,645 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:29,646 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:29,660 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:29,667 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:29,669 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:29,669 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:30,037 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:30,039 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:30,039 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809496903]
[2025-04-28 21:21:30,039 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809496903] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:30,039 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:30,039 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:30,040 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652823415]
[2025-04-28 21:21:30,040 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:30,040 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:30,040 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:30,041 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:30,041 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:30,042 INFO  L87              Difference]: Start difference. First operand 46 states and 57 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:30,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:30,411 INFO  L93              Difference]: Finished difference Result 56 states and 69 transitions.
[2025-04-28 21:21:30,411 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:30,411 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:30,412 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:30,413 INFO  L225             Difference]: With dead ends: 56
[2025-04-28 21:21:30,413 INFO  L226             Difference]: Without dead ends: 52
[2025-04-28 21:21:30,413 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:30,414 INFO  L437           NwaCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:30,414 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 585 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:30,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2025-04-28 21:21:30,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2025-04-28 21:21:30,427 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 52 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 29 states have internal predecessors, (29), 15 states have call successors, (15), 9 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21)
[2025-04-28 21:21:30,428 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions.
[2025-04-28 21:21:30,428 INFO  L79                 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 37
[2025-04-28 21:21:30,428 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:30,429 INFO  L485      AbstractCegarLoop]: Abstraction has 52 states and 65 transitions.
[2025-04-28 21:21:30,429 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:30,429 INFO  L278                IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions.
[2025-04-28 21:21:30,430 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:30,430 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:30,430 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:30,431 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-04-28 21:21:30,431 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:30,431 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:30,431 INFO  L85        PathProgramCache]: Analyzing trace with hash -2108098490, now seen corresponding path program 1 times
[2025-04-28 21:21:30,431 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:30,431 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592487047]
[2025-04-28 21:21:30,431 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:30,432 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:30,439 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:30,448 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:30,449 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:30,449 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:30,786 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:30,786 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:30,786 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592487047]
[2025-04-28 21:21:30,787 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592487047] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:30,787 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:30,787 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:30,787 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201165869]
[2025-04-28 21:21:30,787 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:30,787 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:30,788 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:30,788 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:30,788 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:30,789 INFO  L87              Difference]: Start difference. First operand 52 states and 65 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:31,173 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:31,173 INFO  L93              Difference]: Finished difference Result 68 states and 84 transitions.
[2025-04-28 21:21:31,175 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:31,175 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:31,176 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:31,177 INFO  L225             Difference]: With dead ends: 68
[2025-04-28 21:21:31,178 INFO  L226             Difference]: Without dead ends: 66
[2025-04-28 21:21:31,179 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:31,182 INFO  L437           NwaCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:31,182 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 607 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:31,183 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2025-04-28 21:21:31,201 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60.
[2025-04-28 21:21:31,201 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 33 states have internal predecessors, (33), 15 states have call successors, (15), 9 states have call predecessors, (15), 17 states have return successors, (28), 17 states have call predecessors, (28), 15 states have call successors, (28)
[2025-04-28 21:21:31,202 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions.
[2025-04-28 21:21:31,203 INFO  L79                 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 37
[2025-04-28 21:21:31,203 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:31,203 INFO  L485      AbstractCegarLoop]: Abstraction has 60 states and 76 transitions.
[2025-04-28 21:21:31,206 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:31,206 INFO  L278                IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions.
[2025-04-28 21:21:31,208 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:31,208 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:31,209 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:31,209 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-04-28 21:21:31,209 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:31,209 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:31,210 INFO  L85        PathProgramCache]: Analyzing trace with hash 343777827, now seen corresponding path program 1 times
[2025-04-28 21:21:31,210 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:31,210 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235433934]
[2025-04-28 21:21:31,210 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:31,210 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:31,222 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:31,230 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:31,230 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:31,230 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:31,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:31,535 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:31,535 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235433934]
[2025-04-28 21:21:31,535 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235433934] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:31,535 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:31,535 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:31,536 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758623203]
[2025-04-28 21:21:31,536 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:31,536 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:31,536 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:31,537 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:31,537 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:31,537 INFO  L87              Difference]: Start difference. First operand 60 states and 76 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:31,901 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:31,901 INFO  L93              Difference]: Finished difference Result 64 states and 79 transitions.
[2025-04-28 21:21:31,901 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:31,902 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:31,902 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:31,903 INFO  L225             Difference]: With dead ends: 64
[2025-04-28 21:21:31,903 INFO  L226             Difference]: Without dead ends: 51
[2025-04-28 21:21:31,903 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:31,904 INFO  L437           NwaCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:31,904 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 606 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:31,905 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2025-04-28 21:21:31,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2025-04-28 21:21:31,910 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 51 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 28 states have internal predecessors, (28), 14 states have call successors, (14), 9 states have call predecessors, (14), 13 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19)
[2025-04-28 21:21:31,911 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions.
[2025-04-28 21:21:31,911 INFO  L79                 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 37
[2025-04-28 21:21:31,911 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:31,911 INFO  L485      AbstractCegarLoop]: Abstraction has 51 states and 61 transitions.
[2025-04-28 21:21:31,912 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:31,912 INFO  L278                IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions.
[2025-04-28 21:21:31,913 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:31,913 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:31,913 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:31,913 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2025-04-28 21:21:31,913 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:31,914 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:31,914 INFO  L85        PathProgramCache]: Analyzing trace with hash -295896791, now seen corresponding path program 1 times
[2025-04-28 21:21:31,914 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:31,914 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583367433]
[2025-04-28 21:21:31,914 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:31,914 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:31,919 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:31,923 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:31,923 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:31,923 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:32,241 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:32,241 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:32,241 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583367433]
[2025-04-28 21:21:32,241 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583367433] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:32,242 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:32,242 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:32,242 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604712943]
[2025-04-28 21:21:32,242 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:32,242 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:32,242 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:32,243 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:32,243 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:32,243 INFO  L87              Difference]: Start difference. First operand 51 states and 61 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:32,557 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:32,557 INFO  L93              Difference]: Finished difference Result 61 states and 72 transitions.
[2025-04-28 21:21:32,558 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:32,558 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:32,558 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:32,559 INFO  L225             Difference]: With dead ends: 61
[2025-04-28 21:21:32,559 INFO  L226             Difference]: Without dead ends: 50
[2025-04-28 21:21:32,560 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:32,560 INFO  L437           NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:32,561 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 509 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:32,566 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2025-04-28 21:21:32,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2025-04-28 21:21:32,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 23 states have (on average 1.173913043478261) internal successors, (27), 27 states have internal predecessors, (27), 13 states have call successors, (13), 9 states have call predecessors, (13), 13 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17)
[2025-04-28 21:21:32,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions.
[2025-04-28 21:21:32,576 INFO  L79                 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 37
[2025-04-28 21:21:32,576 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:32,576 INFO  L485      AbstractCegarLoop]: Abstraction has 50 states and 57 transitions.
[2025-04-28 21:21:32,576 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:32,576 INFO  L278                IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions.
[2025-04-28 21:21:32,581 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:32,582 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:32,582 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:32,582 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2025-04-28 21:21:32,582 INFO  L403      AbstractCegarLoop]: === Iteration 7 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:32,582 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:32,583 INFO  L85        PathProgramCache]: Analyzing trace with hash -63148922, now seen corresponding path program 1 times
[2025-04-28 21:21:32,583 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:32,583 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368386769]
[2025-04-28 21:21:32,583 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:32,583 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:32,591 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:32,603 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:32,604 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:32,604 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:32,903 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:32,903 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:32,903 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368386769]
[2025-04-28 21:21:32,903 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368386769] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:32,903 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:32,903 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:32,904 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640658795]
[2025-04-28 21:21:32,904 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:32,904 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:32,904 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:32,905 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:32,905 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:32,906 INFO  L87              Difference]: Start difference. First operand 50 states and 57 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:33,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:33,259 INFO  L93              Difference]: Finished difference Result 56 states and 63 transitions.
[2025-04-28 21:21:33,261 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:33,261 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:33,262 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:33,262 INFO  L225             Difference]: With dead ends: 56
[2025-04-28 21:21:33,263 INFO  L226             Difference]: Without dead ends: 54
[2025-04-28 21:21:33,263 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:33,264 INFO  L437           NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:33,264 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 599 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:33,265 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2025-04-28 21:21:33,272 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50.
[2025-04-28 21:21:33,274 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 50 states, 23 states have (on average 1.173913043478261) internal successors, (27), 27 states have internal predecessors, (27), 13 states have call successors, (13), 9 states have call predecessors, (13), 13 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17)
[2025-04-28 21:21:33,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions.
[2025-04-28 21:21:33,275 INFO  L79                 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 37
[2025-04-28 21:21:33,277 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:33,277 INFO  L485      AbstractCegarLoop]: Abstraction has 50 states and 57 transitions.
[2025-04-28 21:21:33,277 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:33,278 INFO  L278                IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions.
[2025-04-28 21:21:33,278 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:33,278 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:33,281 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:33,281 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2025-04-28 21:21:33,281 INFO  L403      AbstractCegarLoop]: === Iteration 8 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:33,282 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:33,282 INFO  L85        PathProgramCache]: Analyzing trace with hash 94162281, now seen corresponding path program 1 times
[2025-04-28 21:21:33,282 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:33,282 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194552444]
[2025-04-28 21:21:33,282 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:33,282 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:33,289 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:33,296 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:33,298 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:33,299 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:33,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:33,612 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:33,612 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194552444]
[2025-04-28 21:21:33,612 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194552444] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:33,612 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:33,613 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:33,613 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934336365]
[2025-04-28 21:21:33,613 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:33,613 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:33,613 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:33,614 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:33,614 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:33,614 INFO  L87              Difference]: Start difference. First operand 50 states and 57 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:33,867 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:33,867 INFO  L93              Difference]: Finished difference Result 54 states and 60 transitions.
[2025-04-28 21:21:33,868 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:33,868 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:33,869 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:33,869 INFO  L225             Difference]: With dead ends: 54
[2025-04-28 21:21:33,869 INFO  L226             Difference]: Without dead ends: 49
[2025-04-28 21:21:33,870 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:33,871 INFO  L437           NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:33,871 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 532 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:33,872 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2025-04-28 21:21:33,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2025-04-28 21:21:33,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 26 states have internal predecessors, (26), 12 states have call successors, (12), 9 states have call predecessors, (12), 13 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16)
[2025-04-28 21:21:33,876 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions.
[2025-04-28 21:21:33,876 INFO  L79                 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 37
[2025-04-28 21:21:33,876 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:33,877 INFO  L485      AbstractCegarLoop]: Abstraction has 49 states and 54 transitions.
[2025-04-28 21:21:33,877 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:33,877 INFO  L278                IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions.
[2025-04-28 21:21:33,878 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:33,878 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:33,878 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:33,878 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2025-04-28 21:21:33,878 INFO  L403      AbstractCegarLoop]: === Iteration 9 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:33,879 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:33,879 INFO  L85        PathProgramCache]: Analyzing trace with hash -1906239901, now seen corresponding path program 1 times
[2025-04-28 21:21:33,879 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:33,879 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803725821]
[2025-04-28 21:21:33,879 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:33,879 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:33,887 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:33,892 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:33,893 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:33,893 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:34,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:34,177 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:34,177 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803725821]
[2025-04-28 21:21:34,177 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803725821] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:34,177 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:34,177 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:34,177 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116547044]
[2025-04-28 21:21:34,177 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:34,178 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:34,178 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:34,178 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:34,178 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:34,179 INFO  L87              Difference]: Start difference. First operand 49 states and 54 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:34,468 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:34,468 INFO  L93              Difference]: Finished difference Result 51 states and 55 transitions.
[2025-04-28 21:21:34,469 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:34,469 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:34,469 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:34,470 INFO  L225             Difference]: With dead ends: 51
[2025-04-28 21:21:34,470 INFO  L226             Difference]: Without dead ends: 40
[2025-04-28 21:21:34,470 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:34,471 INFO  L437           NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:34,472 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 535 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:34,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2025-04-28 21:21:34,477 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2025-04-28 21:21:34,477 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11)
[2025-04-28 21:21:34,478 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions.
[2025-04-28 21:21:34,478 INFO  L79                 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 37
[2025-04-28 21:21:34,478 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:34,480 INFO  L485      AbstractCegarLoop]: Abstraction has 40 states and 43 transitions.
[2025-04-28 21:21:34,480 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:34,480 INFO  L278                IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions.
[2025-04-28 21:21:34,481 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:34,481 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:34,481 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:34,482 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2025-04-28 21:21:34,482 INFO  L403      AbstractCegarLoop]: === Iteration 10 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:34,483 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:34,483 INFO  L85        PathProgramCache]: Analyzing trace with hash -1330589271, now seen corresponding path program 1 times
[2025-04-28 21:21:34,483 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:34,483 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094512870]
[2025-04-28 21:21:34,483 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:34,484 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:34,491 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:34,497 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:34,498 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:34,498 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:34,786 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:34,787 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:34,787 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094512870]
[2025-04-28 21:21:34,787 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094512870] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:34,787 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:34,787 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:34,787 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216573736]
[2025-04-28 21:21:34,787 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:34,788 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:34,788 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:34,788 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:34,789 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:34,789 INFO  L87              Difference]: Start difference. First operand 40 states and 43 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:35,018 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:35,018 INFO  L93              Difference]: Finished difference Result 42 states and 44 transitions.
[2025-04-28 21:21:35,018 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:35,018 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:35,019 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:35,019 INFO  L225             Difference]: With dead ends: 42
[2025-04-28 21:21:35,019 INFO  L226             Difference]: Without dead ends: 39
[2025-04-28 21:21:35,020 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:35,022 INFO  L437           NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:35,023 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 459 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:35,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2025-04-28 21:21:35,031 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2025-04-28 21:21:35,031 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10)
[2025-04-28 21:21:35,031 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions.
[2025-04-28 21:21:35,032 INFO  L79                 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 37
[2025-04-28 21:21:35,032 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:35,032 INFO  L485      AbstractCegarLoop]: Abstraction has 39 states and 40 transitions.
[2025-04-28 21:21:35,032 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:35,032 INFO  L278                IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions.
[2025-04-28 21:21:35,032 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2025-04-28 21:21:35,032 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:35,033 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:35,033 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2025-04-28 21:21:35,033 INFO  L403      AbstractCegarLoop]: === Iteration 11 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:35,033 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:35,033 INFO  L85        PathProgramCache]: Analyzing trace with hash 1121287046, now seen corresponding path program 1 times
[2025-04-28 21:21:35,033 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:35,033 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735950273]
[2025-04-28 21:21:35,033 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:35,034 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:35,042 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes.
[2025-04-28 21:21:35,050 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements.
[2025-04-28 21:21:35,050 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:35,050 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:35,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:35,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:35,303 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735950273]
[2025-04-28 21:21:35,303 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735950273] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:35,303 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:35,303 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2025-04-28 21:21:35,303 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16086961]
[2025-04-28 21:21:35,303 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:35,304 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2025-04-28 21:21:35,304 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:35,304 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2025-04-28 21:21:35,305 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:21:35,305 INFO  L87              Difference]: Start difference. First operand 39 states and 40 transitions. Second operand  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:35,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:35,481 INFO  L93              Difference]: Finished difference Result 33 states and 34 transitions.
[2025-04-28 21:21:35,481 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2025-04-28 21:21:35,481 INFO  L79                 Accepts]: Start accepts. Automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 37
[2025-04-28 21:21:35,481 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:35,481 INFO  L225             Difference]: With dead ends: 33
[2025-04-28 21:21:35,481 INFO  L226             Difference]: Without dead ends: 0
[2025-04-28 21:21:35,482 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420
[2025-04-28 21:21:35,482 INFO  L437           NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:35,483 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 339 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:35,484 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2025-04-28 21:21:35,484 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2025-04-28 21:21:35,485 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2025-04-28 21:21:35,485 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2025-04-28 21:21:35,485 INFO  L79                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37
[2025-04-28 21:21:35,485 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:35,485 INFO  L485      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2025-04-28 21:21:35,485 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 9 states have (on average 2.111111111111111) internal successors, (19), 16 states have internal predecessors, (19), 8 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9)
[2025-04-28 21:21:35,485 INFO  L278                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2025-04-28 21:21:35,485 INFO  L284                IsEmpty]: Finished isEmpty. No accepting run.
[2025-04-28 21:21:35,488 INFO  L790   garLoopResultBuilder]: Registering result SAFE for location Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY (0 of 1 remaining)
[2025-04-28 21:21:35,489 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2025-04-28 21:21:35,492 INFO  L422         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:35,496 INFO  L171   ceAbstractionStarter]: Computing trace abstraction results
[2025-04-28 21:21:35,499 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 09:21:35 BoogieIcfgContainer
[2025-04-28 21:21:35,499 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2025-04-28 21:21:35,504 INFO  L158              Benchmark]: Toolchain (without parser) took 8678.80ms. Allocated memory was 234.9MB in the beginning and 167.8MB in the end (delta: -67.1MB). Free memory was 160.1MB in the beginning and 101.3MB in the end (delta: 58.8MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:35,504 INFO  L158              Benchmark]: SmtParser took 0.39ms. Allocated memory is still 234.9MB. Free memory is still 167.8MB. There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:35,505 INFO  L158              Benchmark]: ChcToBoogie took 33.78ms. Allocated memory is still 234.9MB. Free memory was 160.1MB in the beginning and 159.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:35,505 INFO  L158              Benchmark]: Boogie Preprocessor took 80.27ms. Allocated memory is still 234.9MB. Free memory was 159.0MB in the beginning and 156.8MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:35,505 INFO  L158              Benchmark]: RCFGBuilder took 361.58ms. Allocated memory is still 234.9MB. Free memory was 156.8MB in the beginning and 146.1MB in the end (delta: 10.7MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
[2025-04-28 21:21:35,506 INFO  L158              Benchmark]: TraceAbstraction took 8194.57ms. Allocated memory was 234.9MB in the beginning and 167.8MB in the end (delta: -67.1MB). Free memory was 145.6MB in the beginning and 101.3MB in the end (delta: 44.3MB). There was no memory consumed. Max. memory is 33.6GB.
[2025-04-28 21:21:35,507 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * SmtParser took 0.39ms. Allocated memory is still 234.9MB. Free memory is still 167.8MB. There was no memory consumed. Max. memory is 33.6GB.
 * ChcToBoogie took 33.78ms. Allocated memory is still 234.9MB. Free memory was 160.1MB in the beginning and 159.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 33.6GB.
 * Boogie Preprocessor took 80.27ms. Allocated memory is still 234.9MB. Free memory was 159.0MB in the beginning and 156.8MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 33.6GB.
 * RCFGBuilder took 361.58ms. Allocated memory is still 234.9MB. Free memory was 156.8MB in the beginning and 146.1MB in the end (delta: 10.7MB). Peak memory consumption was 16.8MB. Max. memory is 33.6GB.
 * TraceAbstraction took 8194.57ms. Allocated memory was 234.9MB in the beginning and 167.8MB in the end (delta: -67.1MB). Free memory was 145.6MB in the beginning and 101.3MB in the end (delta: 44.3MB). There was no memory consumed. Max. memory is 33.6GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Unknown line] : the set of constraint Horn clauses is satisfiable
    For all program executions holds that the set of constraint Horn clauses is satisfiable at this location
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 10 procedures, 46 locations, 73 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 5778 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5316 mSDsCounter, 61 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2021 IncrementalHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 61 mSolverCounterUnsat, 462 mSDtfsCounter, 2021 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, InterpolantAutomatonStates: 171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 407 NumberOfCodeBlocks, 407 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 396 ConstructedInterpolants, 0 QuantifiedInterpolants, 922 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2025-04-28 21:21:35,529 INFO  L540       MonitoredProcess]: [MP /usr/bin/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
sat
