./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-033.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:39,257 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:39,361 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588265dc-c869-4d32-af46-f944f1b87a1d/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:39,369 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:39,370 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:39,409 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:39,411 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:39,411 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:39,412 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:39,413 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:39,413 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:39,413 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:39,413 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:39,415 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:39,415 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:39,415 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:39,415 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:39,415 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:39,415 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:39,415 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:39,415 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:39,416 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:39,416 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:39,416 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:39,416 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:39,417 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:39,417 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:39,781 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:39,794 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:39,797 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:39,800 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:39,801 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:39,804 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588265dc-c869-4d32-af46-f944f1b87a1d/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-033.smt2
[2025-04-28 21:21:39,806 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:39,811 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:42,362 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588265dc-c869-4d32-af46-f944f1b87a1d/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-033.smt2
[2025-04-28 21:21:42,368 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:42,369 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:42,370 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:42,370 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:42,370 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:42,373 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,598 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42 Unit
[2025-04-28 21:21:42,598 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:42,599 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:42,599 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:42,599 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:42,615 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,616 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,704 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,705 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,762 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,768 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,770 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,784 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,796 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,865 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:42,866 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:42,867 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:42,867 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:42,868 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (1/1) ...
[2025-04-28 21:21:42,870 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:42,885 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:42,899 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 21:21:42,903 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 21:21:42,914 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:42,915 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:42,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:42,915 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure realizable given in one single declaration
[2025-04-28 21:21:42,915 INFO  L130     BoogieDeclarations]: Found specification of procedure realizable
[2025-04-28 21:21:42,915 INFO  L138     BoogieDeclarations]: Found implementation of procedure realizable
[2025-04-28 21:21:42,916 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcmainStart__syn given in one single declaration
[2025-04-28 21:21:42,916 INFO  L130     BoogieDeclarations]: Found specification of procedure funcmainStart__syn
[2025-04-28 21:21:42,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcmainStart__syn
[2025-04-28 21:21:42,916 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__syn given in one single declaration
[2025-04-28 21:21:42,916 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__syn
[2025-04-28 21:21:42,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__syn
[2025-04-28 21:21:42,917 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcNT6__syn given in one single declaration
[2025-04-28 21:21:42,917 INFO  L130     BoogieDeclarations]: Found specification of procedure funcNT6__syn
[2025-04-28 21:21:42,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcNT6__syn
[2025-04-28 21:21:42,917 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcNT3__syn given in one single declaration
[2025-04-28 21:21:42,917 INFO  L130     BoogieDeclarations]: Found specification of procedure funcNT3__syn
[2025-04-28 21:21:42,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcNT3__syn
[2025-04-28 21:21:42,917 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcNT7__syn given in one single declaration
[2025-04-28 21:21:42,918 INFO  L130     BoogieDeclarations]: Found specification of procedure funcNT7__syn
[2025-04-28 21:21:42,918 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcNT7__syn
[2025-04-28 21:21:42,919 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcNT5__syn given in one single declaration
[2025-04-28 21:21:42,919 INFO  L130     BoogieDeclarations]: Found specification of procedure funcNT5__syn
[2025-04-28 21:21:42,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcNT5__syn
[2025-04-28 21:21:42,919 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcNT2__syn given in one single declaration
[2025-04-28 21:21:42,919 INFO  L130     BoogieDeclarations]: Found specification of procedure funcNT2__syn
[2025-04-28 21:21:42,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcNT2__syn
[2025-04-28 21:21:42,919 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcNT1__syn given in one single declaration
[2025-04-28 21:21:42,919 INFO  L130     BoogieDeclarations]: Found specification of procedure funcNT1__syn
[2025-04-28 21:21:42,919 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcNT1__syn
[2025-04-28 21:21:42,919 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcNT4__syn given in one single declaration
[2025-04-28 21:21:42,920 INFO  L130     BoogieDeclarations]: Found specification of procedure funcNT4__syn
[2025-04-28 21:21:42,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcNT4__syn
[2025-04-28 21:21:42,920 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:42,920 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:42,920 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:43,671 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:43,673 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:47,845 INFO  L?                        ?]: Removed 336 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:47,845 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:47,864 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:47,864 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:47,865 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:47 BoogieIcfgContainer
[2025-04-28 21:21:47,865 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:47,872 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:47,872 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:47,880 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:47,881 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:42" (1/3) ...
[2025-04-28 21:21:47,881 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7797fb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:47, skipping insertion in model container
[2025-04-28 21:21:47,881 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:42" (2/3) ...
[2025-04-28 21:21:47,882 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7797fb5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:47, skipping insertion in model container
[2025-04-28 21:21:47,882 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:47" (3/3) ...
[2025-04-28 21:21:47,884 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:47,903 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:47,905 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 12 procedures, 117 locations, 308 edges, 12 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:47,954 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:47,967 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;@352b8926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:47,967 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:47,971 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 117 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 53 states have internal predecessors, (65), 81 states have call successors, (81), 11 states have call predecessors, (81), 11 states have return successors, (81), 54 states have call predecessors, (81), 81 states have call successors, (81)
[2025-04-28 21:21:47,987 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2025-04-28 21:21:47,987 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:47,988 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:47,989 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:47,994 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:47,995 INFO  L85        PathProgramCache]: Analyzing trace with hash 328201554, now seen corresponding path program 1 times
[2025-04-28 21:21:48,004 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:48,005 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037709501]
[2025-04-28 21:21:48,005 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:48,006 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:48,144 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes.
[2025-04-28 21:21:48,372 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements.
[2025-04-28 21:21:48,373 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:48,373 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:50,742 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 21:21:50,743 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:50,743 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037709501]
[2025-04-28 21:21:50,744 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037709501] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:50,744 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:50,749 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-04-28 21:21:50,750 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145741557]
[2025-04-28 21:21:50,751 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:50,757 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-04-28 21:21:50,758 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:50,857 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-04-28 21:21:50,858 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:50,861 INFO  L87              Difference]: Start difference. First operand  has 117 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 53 states have internal predecessors, (65), 81 states have call successors, (81), 11 states have call predecessors, (81), 11 states have return successors, (81), 54 states have call predecessors, (81), 81 states have call successors, (81) Second operand  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:51,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:51,470 INFO  L93              Difference]: Finished difference Result 119 states and 228 transitions.
[2025-04-28 21:21:51,473 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:51,474 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16
[2025-04-28 21:21:51,474 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:51,484 INFO  L225             Difference]: With dead ends: 119
[2025-04-28 21:21:51,485 INFO  L226             Difference]: Without dead ends: 115
[2025-04-28 21:21:51,487 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:51,489 INFO  L437           NwaCegarLoop]: 223 mSDtfsCounter, 3 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:51,490 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1090 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2025-04-28 21:21:51,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2025-04-28 21:21:51,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115.
[2025-04-28 21:21:51,538 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 115 states, 22 states have (on average 2.772727272727273) internal successors, (61), 51 states have internal predecessors, (61), 81 states have call successors, (81), 11 states have call predecessors, (81), 11 states have return successors, (81), 54 states have call predecessors, (81), 81 states have call successors, (81)
[2025-04-28 21:21:51,544 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 223 transitions.
[2025-04-28 21:21:51,550 INFO  L79                 Accepts]: Start accepts. Automaton has 115 states and 223 transitions. Word has length 16
[2025-04-28 21:21:51,550 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:51,550 INFO  L485      AbstractCegarLoop]: Abstraction has 115 states and 223 transitions.
[2025-04-28 21:21:51,551 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:51,551 INFO  L278                IsEmpty]: Start isEmpty. Operand 115 states and 223 transitions.
[2025-04-28 21:21:51,557 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2025-04-28 21:21:51,557 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:51,557 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:51,558 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:51,558 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:51,560 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:51,560 INFO  L85        PathProgramCache]: Analyzing trace with hash -457852466, now seen corresponding path program 1 times
[2025-04-28 21:21:51,560 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:51,560 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50879687]
[2025-04-28 21:21:51,560 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:51,561 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:51,631 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes.
[2025-04-28 21:21:51,681 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements.
[2025-04-28 21:21:51,681 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:51,681 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:53,298 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 21:21:53,299 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:53,299 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50879687]
[2025-04-28 21:21:53,299 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50879687] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:53,300 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:53,300 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-04-28 21:21:53,300 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962078009]
[2025-04-28 21:21:53,300 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:53,301 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-04-28 21:21:53,304 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:53,305 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-04-28 21:21:53,305 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:53,305 INFO  L87              Difference]: Start difference. First operand 115 states and 223 transitions. Second operand  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:53,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:53,681 INFO  L93              Difference]: Finished difference Result 119 states and 226 transitions.
[2025-04-28 21:21:53,683 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:53,683 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16
[2025-04-28 21:21:53,683 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:53,686 INFO  L225             Difference]: With dead ends: 119
[2025-04-28 21:21:53,686 INFO  L226             Difference]: Without dead ends: 115
[2025-04-28 21:21:53,687 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:53,688 INFO  L437           NwaCegarLoop]: 221 mSDtfsCounter, 3 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:53,688 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1082 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:53,689 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2025-04-28 21:21:53,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115.
[2025-04-28 21:21:53,707 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 115 states, 22 states have (on average 2.727272727272727) internal successors, (60), 51 states have internal predecessors, (60), 81 states have call successors, (81), 11 states have call predecessors, (81), 11 states have return successors, (81), 54 states have call predecessors, (81), 81 states have call successors, (81)
[2025-04-28 21:21:53,710 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 222 transitions.
[2025-04-28 21:21:53,710 INFO  L79                 Accepts]: Start accepts. Automaton has 115 states and 222 transitions. Word has length 16
[2025-04-28 21:21:53,710 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:53,711 INFO  L485      AbstractCegarLoop]: Abstraction has 115 states and 222 transitions.
[2025-04-28 21:21:53,711 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:53,711 INFO  L278                IsEmpty]: Start isEmpty. Operand 115 states and 222 transitions.
[2025-04-28 21:21:53,713 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2025-04-28 21:21:53,713 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:53,714 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:53,714 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:53,714 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:53,714 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:53,715 INFO  L85        PathProgramCache]: Analyzing trace with hash -1243906486, now seen corresponding path program 1 times
[2025-04-28 21:21:53,715 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:53,715 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561952267]
[2025-04-28 21:21:53,715 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:53,715 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:53,787 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes.
[2025-04-28 21:21:53,831 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements.
[2025-04-28 21:21:53,831 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:53,831 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:55,473 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 21:21:55,473 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:55,474 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561952267]
[2025-04-28 21:21:55,474 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561952267] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:55,474 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:55,474 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-04-28 21:21:55,474 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989311454]
[2025-04-28 21:21:55,474 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:55,474 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-04-28 21:21:55,475 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:55,475 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-04-28 21:21:55,475 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:55,476 INFO  L87              Difference]: Start difference. First operand 115 states and 222 transitions. Second operand  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:55,832 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:55,832 INFO  L93              Difference]: Finished difference Result 119 states and 225 transitions.
[2025-04-28 21:21:55,834 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:55,835 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16
[2025-04-28 21:21:55,835 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:55,838 INFO  L225             Difference]: With dead ends: 119
[2025-04-28 21:21:55,838 INFO  L226             Difference]: Without dead ends: 115
[2025-04-28 21:21:55,838 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:55,839 INFO  L437           NwaCegarLoop]: 220 mSDtfsCounter, 3 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:55,840 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1078 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:55,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2025-04-28 21:21:55,855 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115.
[2025-04-28 21:21:55,856 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 115 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 51 states have internal predecessors, (59), 81 states have call successors, (81), 11 states have call predecessors, (81), 11 states have return successors, (81), 54 states have call predecessors, (81), 81 states have call successors, (81)
[2025-04-28 21:21:55,863 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 221 transitions.
[2025-04-28 21:21:55,863 INFO  L79                 Accepts]: Start accepts. Automaton has 115 states and 221 transitions. Word has length 16
[2025-04-28 21:21:55,863 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:55,863 INFO  L485      AbstractCegarLoop]: Abstraction has 115 states and 221 transitions.
[2025-04-28 21:21:55,863 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:55,863 INFO  L278                IsEmpty]: Start isEmpty. Operand 115 states and 221 transitions.
[2025-04-28 21:21:55,865 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2025-04-28 21:21:55,865 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:55,866 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:55,866 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-04-28 21:21:55,866 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:55,866 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:55,867 INFO  L85        PathProgramCache]: Analyzing trace with hash 974401697, now seen corresponding path program 1 times
[2025-04-28 21:21:55,867 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:55,867 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923638094]
[2025-04-28 21:21:55,867 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:55,867 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:55,923 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes.
[2025-04-28 21:21:55,954 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements.
[2025-04-28 21:21:55,954 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:55,954 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:57,080 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 21:21:57,080 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:57,080 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923638094]
[2025-04-28 21:21:57,081 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923638094] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:57,081 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:57,081 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-04-28 21:21:57,081 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194782918]
[2025-04-28 21:21:57,081 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:57,081 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-04-28 21:21:57,082 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:57,082 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-04-28 21:21:57,082 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:57,083 INFO  L87              Difference]: Start difference. First operand 115 states and 221 transitions. Second operand  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:57,439 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:57,439 INFO  L93              Difference]: Finished difference Result 119 states and 224 transitions.
[2025-04-28 21:21:57,441 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:57,442 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16
[2025-04-28 21:21:57,442 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:57,446 INFO  L225             Difference]: With dead ends: 119
[2025-04-28 21:21:57,449 INFO  L226             Difference]: Without dead ends: 115
[2025-04-28 21:21:57,449 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:57,450 INFO  L437           NwaCegarLoop]: 219 mSDtfsCounter, 3 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:57,452 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1074 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:57,453 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2025-04-28 21:21:57,475 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115.
[2025-04-28 21:21:57,477 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 115 states, 22 states have (on average 2.590909090909091) internal successors, (57), 51 states have internal predecessors, (57), 81 states have call successors, (81), 11 states have call predecessors, (81), 11 states have return successors, (81), 54 states have call predecessors, (81), 81 states have call successors, (81)
[2025-04-28 21:21:57,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 219 transitions.
[2025-04-28 21:21:57,482 INFO  L79                 Accepts]: Start accepts. Automaton has 115 states and 219 transitions. Word has length 16
[2025-04-28 21:21:57,482 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:57,482 INFO  L485      AbstractCegarLoop]: Abstraction has 115 states and 219 transitions.
[2025-04-28 21:21:57,482 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:57,483 INFO  L278                IsEmpty]: Start isEmpty. Operand 115 states and 219 transitions.
[2025-04-28 21:21:57,485 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2025-04-28 21:21:57,486 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:57,486 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:57,486 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2025-04-28 21:21:57,486 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:57,487 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:57,487 INFO  L85        PathProgramCache]: Analyzing trace with hash 188347677, now seen corresponding path program 1 times
[2025-04-28 21:21:57,487 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:57,487 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12248637]
[2025-04-28 21:21:57,487 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:57,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:57,547 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes.
[2025-04-28 21:21:57,578 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements.
[2025-04-28 21:21:57,578 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:57,578 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:58,740 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 21:21:58,740 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:58,740 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12248637]
[2025-04-28 21:21:58,740 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12248637] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:58,740 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:58,740 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2025-04-28 21:21:58,740 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122104487]
[2025-04-28 21:21:58,740 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:58,741 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2025-04-28 21:21:58,741 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:58,741 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2025-04-28 21:21:58,741 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2025-04-28 21:21:58,742 INFO  L87              Difference]: Start difference. First operand 115 states and 219 transitions. Second operand  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:59,068 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:59,069 INFO  L93              Difference]: Finished difference Result 119 states and 222 transitions.
[2025-04-28 21:21:59,074 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:59,074 INFO  L79                 Accepts]: Start accepts. Automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16
[2025-04-28 21:21:59,074 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:59,076 INFO  L225             Difference]: With dead ends: 119
[2025-04-28 21:21:59,076 INFO  L226             Difference]: Without dead ends: 115
[2025-04-28 21:21:59,077 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2025-04-28 21:21:59,077 INFO  L437           NwaCegarLoop]: 217 mSDtfsCounter, 3 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:59,078 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1066 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:59,078 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2025-04-28 21:21:59,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115.
[2025-04-28 21:21:59,102 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 115 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 50 states have internal predecessors, (56), 81 states have call successors, (81), 11 states have call predecessors, (81), 11 states have return successors, (81), 54 states have call predecessors, (81), 81 states have call successors, (81)
[2025-04-28 21:21:59,108 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 218 transitions.
[2025-04-28 21:21:59,108 INFO  L79                 Accepts]: Start accepts. Automaton has 115 states and 218 transitions. Word has length 16
[2025-04-28 21:21:59,108 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:59,108 INFO  L485      AbstractCegarLoop]: Abstraction has 115 states and 218 transitions.
[2025-04-28 21:21:59,108 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4)
[2025-04-28 21:21:59,109 INFO  L278                IsEmpty]: Start isEmpty. Operand 115 states and 218 transitions.
[2025-04-28 21:21:59,113 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2025-04-28 21:21:59,113 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:59,113 INFO  L218           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:59,114 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2025-04-28 21:21:59,114 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:59,114 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:59,114 INFO  L85        PathProgramCache]: Analyzing trace with hash -802469522, now seen corresponding path program 1 times
[2025-04-28 21:21:59,114 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:59,114 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712484463]
[2025-04-28 21:21:59,114 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:59,115 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:59,191 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes.
[2025-04-28 21:21:59,291 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements.
[2025-04-28 21:21:59,291 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:59,291 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:00,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2025-04-28 21:22:00,921 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:22:00,922 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712484463]
[2025-04-28 21:22:00,922 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712484463] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:22:00,922 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:22:00,922 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2025-04-28 21:22:00,922 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570714545]
[2025-04-28 21:22:00,922 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:22:00,922 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2025-04-28 21:22:00,923 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:22:00,923 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2025-04-28 21:22:00,923 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2025-04-28 21:22:00,924 INFO  L87              Difference]: Start difference. First operand 115 states and 218 transitions. Second operand  has 9 states, 5 states have (on average 2.0) internal successors, (10), 7 states have internal predecessors, (10), 5 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6)
[2025-04-28 21:22:03,089 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:22:03,090 INFO  L93              Difference]: Finished difference Result 127 states and 261 transitions.
[2025-04-28 21:22:03,091 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2025-04-28 21:22:03,091 INFO  L79                 Accepts]: Start accepts. Automaton has  has 9 states, 5 states have (on average 2.0) internal successors, (10), 7 states have internal predecessors, (10), 5 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 24
[2025-04-28 21:22:03,091 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:22:03,093 INFO  L225             Difference]: With dead ends: 127
[2025-04-28 21:22:03,093 INFO  L226             Difference]: Without dead ends: 123
[2025-04-28 21:22:03,094 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2025-04-28 21:22:03,094 INFO  L437           NwaCegarLoop]: 186 mSDtfsCounter, 4 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:22:03,094 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1061 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time]
[2025-04-28 21:22:03,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2025-04-28 21:22:03,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118.
[2025-04-28 21:22:03,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 118 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 52 states have internal predecessors, (57), 82 states have call successors, (82), 11 states have call predecessors, (82), 12 states have return successors, (112), 55 states have call predecessors, (112), 82 states have call successors, (112)
[2025-04-28 21:22:03,121 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 251 transitions.
[2025-04-28 21:22:03,122 INFO  L79                 Accepts]: Start accepts. Automaton has 118 states and 251 transitions. Word has length 24
[2025-04-28 21:22:03,122 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:22:03,122 INFO  L485      AbstractCegarLoop]: Abstraction has 118 states and 251 transitions.
[2025-04-28 21:22:03,126 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 5 states have (on average 2.0) internal successors, (10), 7 states have internal predecessors, (10), 5 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6)
[2025-04-28 21:22:03,126 INFO  L278                IsEmpty]: Start isEmpty. Operand 118 states and 251 transitions.
[2025-04-28 21:22:03,128 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2025-04-28 21:22:03,128 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:22:03,128 INFO  L218           NwaCegarLoop]: trace histogram [2, 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 21:22:03,128 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2025-04-28 21:22:03,129 INFO  L403      AbstractCegarLoop]: === Iteration 7 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:22:03,129 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:22:03,132 INFO  L85        PathProgramCache]: Analyzing trace with hash -286138646, now seen corresponding path program 1 times
[2025-04-28 21:22:03,132 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:22:03,132 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023357405]
[2025-04-28 21:22:03,132 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:03,133 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:22:03,190 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes.
[2025-04-28 21:22:03,231 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements.
[2025-04-28 21:22:03,231 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:03,231 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:05,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2025-04-28 21:22:05,384 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:22:05,385 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023357405]
[2025-04-28 21:22:05,385 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023357405] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:22:05,385 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398476108]
[2025-04-28 21:22:05,385 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:05,385 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:05,387 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:22:05,389 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:22:05,391 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:22:06,232 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes.
[2025-04-28 21:22:06,553 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements.
[2025-04-28 21:22:06,553 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:06,554 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:06,563 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 27 conjuncts are in the unsatisfiable core
[2025-04-28 21:22:06,574 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:22:07,487 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2025-04-28 21:22:07,487 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
