./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-045.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:09,989 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:10,085 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e853de5-1973-4990-8246-e0de90de41dd/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:10,089 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:10,090 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:10,113 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:10,113 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:10,114 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:10,114 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:10,114 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:10,115 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:10,115 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:10,115 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:10,115 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:10,115 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:10,115 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:10,116 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:10,116 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:10,116 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:10,116 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:10,116 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:10,116 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:10,116 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:10,117 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:10,117 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:10,117 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:10,118 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:10,431 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:10,445 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:10,449 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:10,451 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:10,453 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:10,454 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e853de5-1973-4990-8246-e0de90de41dd/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-045.smt2
[2025-04-28 21:21:10,456 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:10,460 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:11,063 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e853de5-1973-4990-8246-e0de90de41dd/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-045.smt2
[2025-04-28 21:21:11,069 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:11,071 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:11,072 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:11,073 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:11,073 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:11,077 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,165 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11 Unit
[2025-04-28 21:21:11,165 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:11,166 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:11,166 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:11,169 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:11,186 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,186 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,219 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,219 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,228 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,230 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,233 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,238 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,240 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,265 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:11,266 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:11,266 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:11,266 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:11,267 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (1/1) ...
[2025-04-28 21:21:11,270 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:11,287 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:11,305 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 21:21:11,313 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 21:21:11,325 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:11,325 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:11,325 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:11,325 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure realizable given in one single declaration
[2025-04-28 21:21:11,325 INFO  L130     BoogieDeclarations]: Found specification of procedure realizable
[2025-04-28 21:21:11,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure realizable
[2025-04-28 21:21:11,326 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__syn given in one single declaration
[2025-04-28 21:21:11,326 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__syn
[2025-04-28 21:21:11,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__syn
[2025-04-28 21:21:11,326 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS__syn given in one single declaration
[2025-04-28 21:21:11,326 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS__syn
[2025-04-28 21:21:11,326 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS__syn
[2025-04-28 21:21:11,326 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__syn given in one single declaration
[2025-04-28 21:21:11,327 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__syn
[2025-04-28 21:21:11,327 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__syn
[2025-04-28 21:21:11,327 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcA__syn given in one single declaration
[2025-04-28 21:21:11,328 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA__syn
[2025-04-28 21:21:11,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA__syn
[2025-04-28 21:21:11,328 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__syn given in one single declaration
[2025-04-28 21:21:11,328 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__syn
[2025-04-28 21:21:11,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__syn
[2025-04-28 21:21:11,328 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__sem given in one single declaration
[2025-04-28 21:21:11,328 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__sem
[2025-04-28 21:21:11,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__sem
[2025-04-28 21:21:11,328 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS__sem given in one single declaration
[2025-04-28 21:21:11,328 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS__sem
[2025-04-28 21:21:11,328 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS__sem
[2025-04-28 21:21:11,328 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcA__sem given in one single declaration
[2025-04-28 21:21:11,329 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA__sem
[2025-04-28 21:21:11,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA__sem
[2025-04-28 21:21:11,329 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__sem given in one single declaration
[2025-04-28 21:21:11,329 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__sem
[2025-04-28 21:21:11,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__sem
[2025-04-28 21:21:11,329 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__sem given in one single declaration
[2025-04-28 21:21:11,329 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__sem
[2025-04-28 21:21:11,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__sem
[2025-04-28 21:21:11,329 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:11,329 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:11,329 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:11,584 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:11,587 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:12,255 INFO  L?                        ?]: Removed 104 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:12,255 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:12,276 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:12,276 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:12,279 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:12 BoogieIcfgContainer
[2025-04-28 21:21:12,279 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:12,283 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:12,284 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:12,290 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:12,290 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:11" (1/3) ...
[2025-04-28 21:21:12,291 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b7788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:12, skipping insertion in model container
[2025-04-28 21:21:12,291 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:11" (2/3) ...
[2025-04-28 21:21:12,291 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b7788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:12, skipping insertion in model container
[2025-04-28 21:21:12,292 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:12" (3/3) ...
[2025-04-28 21:21:12,293 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:12,314 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:12,316 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 13 procedures, 74 locations, 150 edges, 13 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:12,382 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:12,401 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;@5f10a6ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:12,403 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:12,407 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 74 states, 25 states have (on average 1.8) internal successors, (45), 37 states have internal predecessors, (45), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (35), 25 states have call predecessors, (35), 35 states have call successors, (35)
[2025-04-28 21:21:12,423 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2025-04-28 21:21:12,425 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:12,427 INFO  L218           NwaCegarLoop]: trace histogram [4, 4, 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 21:21:12,428 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:12,432 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:12,433 INFO  L85        PathProgramCache]: Analyzing trace with hash -1937056191, now seen corresponding path program 1 times
[2025-04-28 21:21:12,442 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:12,443 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598874269]
[2025-04-28 21:21:12,443 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:12,443 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:12,526 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes.
[2025-04-28 21:21:12,665 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements.
[2025-04-28 21:21:12,666 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:12,666 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:15,015 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2025-04-28 21:21:15,015 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:15,015 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598874269]
[2025-04-28 21:21:15,016 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598874269] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:15,016 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:15,020 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2025-04-28 21:21:15,022 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143356141]
[2025-04-28 21:21:15,024 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:15,034 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2025-04-28 21:21:15,034 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:15,084 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2025-04-28 21:21:15,084 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2025-04-28 21:21:15,087 INFO  L87              Difference]: Start difference. First operand  has 74 states, 25 states have (on average 1.8) internal successors, (45), 37 states have internal predecessors, (45), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (35), 25 states have call predecessors, (35), 35 states have call successors, (35) Second operand  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 8 states have internal predecessors, (16), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11)
[2025-04-28 21:21:15,711 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:15,712 INFO  L93              Difference]: Finished difference Result 82 states and 128 transitions.
[2025-04-28 21:21:15,714 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2025-04-28 21:21:15,715 INFO  L79                 Accepts]: Start accepts. Automaton has  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 8 states have internal predecessors, (16), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 44
[2025-04-28 21:21:15,716 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:15,726 INFO  L225             Difference]: With dead ends: 82
[2025-04-28 21:21:15,727 INFO  L226             Difference]: Without dead ends: 80
[2025-04-28 21:21:15,729 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2025-04-28 21:21:15,733 INFO  L437           NwaCegarLoop]: 106 mSDtfsCounter, 6 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:15,734 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 923 Invalid, 82 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:15,752 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2025-04-28 21:21:15,803 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78.
[2025-04-28 21:21:15,804 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 78 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 37 states have internal predecessors, (45), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (42), 28 states have call predecessors, (42), 37 states have call successors, (42)
[2025-04-28 21:21:15,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 124 transitions.
[2025-04-28 21:21:15,813 INFO  L79                 Accepts]: Start accepts. Automaton has 78 states and 124 transitions. Word has length 44
[2025-04-28 21:21:15,816 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:15,817 INFO  L485      AbstractCegarLoop]: Abstraction has 78 states and 124 transitions.
[2025-04-28 21:21:15,817 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 8 states have internal predecessors, (16), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11)
[2025-04-28 21:21:15,817 INFO  L278                IsEmpty]: Start isEmpty. Operand 78 states and 124 transitions.
[2025-04-28 21:21:15,823 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2025-04-28 21:21:15,825 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:15,826 INFO  L218           NwaCegarLoop]: trace histogram [4, 4, 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 21:21:15,826 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:15,826 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:15,827 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:15,829 INFO  L85        PathProgramCache]: Analyzing trace with hash 787239068, now seen corresponding path program 1 times
[2025-04-28 21:21:15,830 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:15,830 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532811046]
[2025-04-28 21:21:15,830 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:15,830 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:15,888 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes.
[2025-04-28 21:21:15,919 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements.
[2025-04-28 21:21:15,919 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:15,919 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:17,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2025-04-28 21:21:17,562 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:17,562 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532811046]
[2025-04-28 21:21:17,562 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532811046] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:17,562 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:17,562 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2025-04-28 21:21:17,563 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187634178]
[2025-04-28 21:21:17,563 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:17,564 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2025-04-28 21:21:17,564 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:17,565 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2025-04-28 21:21:17,565 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2025-04-28 21:21:17,566 INFO  L87              Difference]: Start difference. First operand 78 states and 124 transitions. Second operand  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 8 states have internal predecessors, (16), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11)
[2025-04-28 21:21:18,008 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:18,008 INFO  L93              Difference]: Finished difference Result 84 states and 132 transitions.
[2025-04-28 21:21:18,008 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2025-04-28 21:21:18,009 INFO  L79                 Accepts]: Start accepts. Automaton has  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 8 states have internal predecessors, (16), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 44
[2025-04-28 21:21:18,009 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:18,011 INFO  L225             Difference]: With dead ends: 84
[2025-04-28 21:21:18,011 INFO  L226             Difference]: Without dead ends: 82
[2025-04-28 21:21:18,011 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156
[2025-04-28 21:21:18,012 INFO  L437           NwaCegarLoop]: 106 mSDtfsCounter, 6 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:18,012 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 922 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:21:18,013 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2025-04-28 21:21:18,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78.
[2025-04-28 21:21:18,037 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 78 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 37 states have internal predecessors, (45), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (42), 28 states have call predecessors, (42), 37 states have call successors, (42)
[2025-04-28 21:21:18,040 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 124 transitions.
[2025-04-28 21:21:18,040 INFO  L79                 Accepts]: Start accepts. Automaton has 78 states and 124 transitions. Word has length 44
[2025-04-28 21:21:18,040 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:18,040 INFO  L485      AbstractCegarLoop]: Abstraction has 78 states and 124 transitions.
[2025-04-28 21:21:18,040 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 8 states have internal predecessors, (16), 7 states have call successors, (11), 1 states have call predecessors, (11), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11)
[2025-04-28 21:21:18,041 INFO  L278                IsEmpty]: Start isEmpty. Operand 78 states and 124 transitions.
[2025-04-28 21:21:18,049 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-04-28 21:21:18,049 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:18,049 INFO  L218           NwaCegarLoop]: trace histogram [7, 7, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1]
[2025-04-28 21:21:18,050 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2025-04-28 21:21:18,050 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:18,050 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:18,050 INFO  L85        PathProgramCache]: Analyzing trace with hash 115789301, now seen corresponding path program 1 times
[2025-04-28 21:21:18,050 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:18,051 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118186761]
[2025-04-28 21:21:18,051 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:18,051 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:18,109 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-04-28 21:21:18,157 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-04-28 21:21:18,157 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:18,158 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:20,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2025-04-28 21:21:20,197 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:20,197 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118186761]
[2025-04-28 21:21:20,197 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118186761] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:20,198 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:20,198 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2025-04-28 21:21:20,198 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010758768]
[2025-04-28 21:21:20,198 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:20,198 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2025-04-28 21:21:20,198 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:20,199 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2025-04-28 21:21:20,199 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2025-04-28 21:21:20,200 INFO  L87              Difference]: Start difference. First operand 78 states and 124 transitions. Second operand  has 11 states, 6 states have (on average 3.0) internal successors, (18), 8 states have internal predecessors, (18), 8 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15)
[2025-04-28 21:21:20,730 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:20,730 INFO  L93              Difference]: Finished difference Result 89 states and 147 transitions.
[2025-04-28 21:21:20,731 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2025-04-28 21:21:20,732 INFO  L79                 Accepts]: Start accepts. Automaton has  has 11 states, 6 states have (on average 3.0) internal successors, (18), 8 states have internal predecessors, (18), 8 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 68
[2025-04-28 21:21:20,732 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:20,734 INFO  L225             Difference]: With dead ends: 89
[2025-04-28 21:21:20,734 INFO  L226             Difference]: Without dead ends: 87
[2025-04-28 21:21:20,735 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210
[2025-04-28 21:21:20,740 INFO  L437           NwaCegarLoop]: 107 mSDtfsCounter, 10 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:20,740 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 917 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:20,741 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2025-04-28 21:21:20,764 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81.
[2025-04-28 21:21:20,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 38 states have internal predecessors, (46), 38 states have call successors, (38), 12 states have call predecessors, (38), 15 states have return successors, (48), 30 states have call predecessors, (48), 38 states have call successors, (48)
[2025-04-28 21:21:20,766 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 132 transitions.
[2025-04-28 21:21:20,766 INFO  L79                 Accepts]: Start accepts. Automaton has 81 states and 132 transitions. Word has length 68
[2025-04-28 21:21:20,767 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:20,767 INFO  L485      AbstractCegarLoop]: Abstraction has 81 states and 132 transitions.
[2025-04-28 21:21:20,767 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 6 states have (on average 3.0) internal successors, (18), 8 states have internal predecessors, (18), 8 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15)
[2025-04-28 21:21:20,767 INFO  L278                IsEmpty]: Start isEmpty. Operand 81 states and 132 transitions.
[2025-04-28 21:21:20,769 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2025-04-28 21:21:20,769 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:20,769 INFO  L218           NwaCegarLoop]: trace histogram [6, 6, 3, 2, 2, 2, 2, 2, 2, 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 21:21:20,769 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-04-28 21:21:20,770 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:20,770 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:20,770 INFO  L85        PathProgramCache]: Analyzing trace with hash 149198036, now seen corresponding path program 1 times
[2025-04-28 21:21:20,771 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:20,771 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584759540]
[2025-04-28 21:21:20,771 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:20,771 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:20,826 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes.
[2025-04-28 21:21:20,855 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements.
[2025-04-28 21:21:20,855 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:20,855 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:23,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2025-04-28 21:21:23,099 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:23,099 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584759540]
[2025-04-28 21:21:23,099 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584759540] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:23,099 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323439156]
[2025-04-28 21:21:23,099 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:23,099 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:23,102 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:23,105 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 21:21:23,110 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:23,341 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes.
[2025-04-28 21:21:23,499 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements.
[2025-04-28 21:21:23,499 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:23,499 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:23,507 INFO  L256         TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 41 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:23,519 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:25,725 INFO  L134       CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked.
[2025-04-28 21:21:25,726 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
