./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-131.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:45,561 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:45,663 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ee5c76-4f77-4bbc-b7c6-f9ed05121cdb/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:45,673 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:45,674 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:45,714 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:45,715 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:45,715 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:45,715 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:45,716 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:45,716 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:45,716 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:45,716 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:45,716 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:45,716 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:45,716 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:45,717 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:45,717 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:45,717 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:45,717 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:45,717 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:45,719 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:45,720 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:45,720 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:45,720 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:45,721 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:45,721 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:46,059 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:46,070 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:46,073 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:46,074 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:46,076 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:46,078 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ee5c76-4f77-4bbc-b7c6-f9ed05121cdb/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-131.smt2
[2025-04-28 21:21:46,079 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:46,084 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:46,660 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ee5c76-4f77-4bbc-b7c6-f9ed05121cdb/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-131.smt2
[2025-04-28 21:21:46,668 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:46,671 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:46,672 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:46,674 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:46,674 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:46,677 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,754 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46 Unit
[2025-04-28 21:21:46,755 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:46,756 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:46,756 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:46,756 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:46,779 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,779 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,823 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,823 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,832 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,835 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,837 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,845 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,849 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,875 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:46,876 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:46,876 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:46,876 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:46,877 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (1/1) ...
[2025-04-28 21:21:46,880 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:46,901 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:46,916 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 21:21:46,923 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 21:21:46,936 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:46,936 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:46,936 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:46,937 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure realizable given in one single declaration
[2025-04-28 21:21:46,937 INFO  L130     BoogieDeclarations]: Found specification of procedure realizable
[2025-04-28 21:21:46,937 INFO  L138     BoogieDeclarations]: Found implementation of procedure realizable
[2025-04-28 21:21:46,938 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__syn given in one single declaration
[2025-04-28 21:21:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__syn
[2025-04-28 21:21:46,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__syn
[2025-04-28 21:21:46,938 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__sem given in one single declaration
[2025-04-28 21:21:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__sem
[2025-04-28 21:21:46,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__sem
[2025-04-28 21:21:46,938 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__sem given in one single declaration
[2025-04-28 21:21:46,938 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__sem
[2025-04-28 21:21:46,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__sem
[2025-04-28 21:21:46,938 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcA__sem given in one single declaration
[2025-04-28 21:21:46,939 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA__sem
[2025-04-28 21:21:46,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA__sem
[2025-04-28 21:21:46,940 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS__sem given in one single declaration
[2025-04-28 21:21:46,940 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS__sem
[2025-04-28 21:21:46,940 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS__sem
[2025-04-28 21:21:46,941 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS1__sem given in one single declaration
[2025-04-28 21:21:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS1__sem
[2025-04-28 21:21:46,941 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS1__sem
[2025-04-28 21:21:46,941 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__sem given in one single declaration
[2025-04-28 21:21:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__sem
[2025-04-28 21:21:46,941 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__sem
[2025-04-28 21:21:46,941 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS__syn given in one single declaration
[2025-04-28 21:21:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS__syn
[2025-04-28 21:21:46,941 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS__syn
[2025-04-28 21:21:46,941 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS1__syn given in one single declaration
[2025-04-28 21:21:46,941 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS1__syn
[2025-04-28 21:21:46,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS1__syn
[2025-04-28 21:21:46,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcA__syn given in one single declaration
[2025-04-28 21:21:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA__syn
[2025-04-28 21:21:46,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA__syn
[2025-04-28 21:21:46,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__syn given in one single declaration
[2025-04-28 21:21:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__syn
[2025-04-28 21:21:46,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__syn
[2025-04-28 21:21:46,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__syn given in one single declaration
[2025-04-28 21:21:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__syn
[2025-04-28 21:21:46,942 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__syn
[2025-04-28 21:21:46,942 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:46,942 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:46,943 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:47,203 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:47,206 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:47,893 INFO  L?                        ?]: Removed 104 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:47,893 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:47,914 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:47,918 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:47,919 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:47 BoogieIcfgContainer
[2025-04-28 21:21:47,919 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:47,922 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:47,922 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:47,926 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:47,926 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:46" (1/3) ...
[2025-04-28 21:21:47,927 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5349ebe5 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 21:21:47,927 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:46" (2/3) ...
[2025-04-28 21:21:47,928 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5349ebe5 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 21:21:47,928 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 21:21:47,930 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:47,947 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:47,950 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 15 procedures, 80 locations, 152 edges, 15 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:48,018 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:48,038 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;@60f34929, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:48,038 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:48,042 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 80 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 39 states have internal predecessors, (47), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 27 states have call predecessors, (35), 35 states have call successors, (35)
[2025-04-28 21:21:48,060 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2025-04-28 21:21:48,061 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:48,061 INFO  L218           NwaCegarLoop]: trace histogram [6, 6, 2, 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]
[2025-04-28 21:21:48,062 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:48,069 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:48,071 INFO  L85        PathProgramCache]: Analyzing trace with hash -333163685, now seen corresponding path program 1 times
[2025-04-28 21:21:48,082 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:48,082 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063646245]
[2025-04-28 21:21:48,082 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:48,083 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:48,202 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes.
[2025-04-28 21:21:48,402 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements.
[2025-04-28 21:21:48,402 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:48,403 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:51,445 INFO  L134       CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2025-04-28 21:21:51,446 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:51,446 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063646245]
[2025-04-28 21:21:51,448 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063646245] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:51,449 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:51,458 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2025-04-28 21:21:51,463 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768611733]
[2025-04-28 21:21:51,464 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:51,474 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2025-04-28 21:21:51,479 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:51,543 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2025-04-28 21:21:51,548 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2025-04-28 21:21:51,550 INFO  L87              Difference]: Start difference. First operand  has 80 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 39 states have internal predecessors, (47), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 27 states have call predecessors, (35), 35 states have call successors, (35) Second operand  has 12 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 9 states have internal predecessors, (19), 8 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14)
[2025-04-28 21:21:52,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:52,079 INFO  L93              Difference]: Finished difference Result 92 states and 134 transitions.
[2025-04-28 21:21:52,080 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2025-04-28 21:21:52,082 INFO  L79                 Accepts]: Start accepts. Automaton has  has 12 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 9 states have internal predecessors, (19), 8 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14) Word has length 64
[2025-04-28 21:21:52,083 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:52,097 INFO  L225             Difference]: With dead ends: 92
[2025-04-28 21:21:52,099 INFO  L226             Difference]: Without dead ends: 90
[2025-04-28 21:21:52,101 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182
[2025-04-28 21:21:52,107 INFO  L437           NwaCegarLoop]: 112 mSDtfsCounter, 5 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:52,109 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1085 Invalid, 108 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:52,125 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2025-04-28 21:21:52,173 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86.
[2025-04-28 21:21:52,175 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 40 states have internal predecessors, (48), 37 states have call successors, (37), 14 states have call predecessors, (37), 17 states have return successors, (43), 31 states have call predecessors, (43), 37 states have call successors, (43)
[2025-04-28 21:21:52,185 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 128 transitions.
[2025-04-28 21:21:52,187 INFO  L79                 Accepts]: Start accepts. Automaton has 86 states and 128 transitions. Word has length 64
[2025-04-28 21:21:52,189 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:52,189 INFO  L485      AbstractCegarLoop]: Abstraction has 86 states and 128 transitions.
[2025-04-28 21:21:52,189 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 9 states have internal predecessors, (19), 8 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (14), 9 states have call predecessors, (14), 8 states have call successors, (14)
[2025-04-28 21:21:52,190 INFO  L278                IsEmpty]: Start isEmpty. Operand 86 states and 128 transitions.
[2025-04-28 21:21:52,195 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-04-28 21:21:52,197 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:52,197 INFO  L218           NwaCegarLoop]: trace histogram [7, 7, 2, 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, 1]
[2025-04-28 21:21:52,197 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:52,198 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:52,198 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:52,198 INFO  L85        PathProgramCache]: Analyzing trace with hash -1002019303, now seen corresponding path program 1 times
[2025-04-28 21:21:52,199 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:52,199 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400890090]
[2025-04-28 21:21:52,199 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:52,200 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:52,272 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-04-28 21:21:52,321 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-04-28 21:21:52,322 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:52,322 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:55,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2025-04-28 21:21:55,140 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:55,140 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400890090]
[2025-04-28 21:21:55,141 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400890090] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:55,141 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545106892]
[2025-04-28 21:21:55,141 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:55,141 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:55,144 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:55,149 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 21:21:55,150 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:55,432 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-04-28 21:21:55,611 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-04-28 21:21:55,611 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:55,611 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:55,618 INFO  L256         TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 45 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:55,629 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:55,741 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2025-04-28 21:21:55,751 INFO  L354             Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46
[2025-04-28 21:21:55,808 INFO  L354             Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 3
[2025-04-28 21:21:57,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2025-04-28 21:21:57,548 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:22:05,161 INFO  L354             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5
[2025-04-28 21:22:05,621 INFO  L354             Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5
[2025-04-28 21:22:06,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2025-04-28 21:22:06,207 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [545106892] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:22:06,207 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:22:06,207 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29
[2025-04-28 21:22:06,208 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390222007]
[2025-04-28 21:22:06,208 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:22:06,209 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2025-04-28 21:22:06,209 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:22:06,210 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2025-04-28 21:22:06,211 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812
[2025-04-28 21:22:06,211 INFO  L87              Difference]: Start difference. First operand 86 states and 128 transitions. Second operand  has 29 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 20 states have internal predecessors, (34), 22 states have call successors, (30), 1 states have call predecessors, (30), 14 states have return successors, (32), 21 states have call predecessors, (32), 22 states have call successors, (32)
[2025-04-28 21:22:08,305 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:22:08,305 INFO  L93              Difference]: Finished difference Result 102 states and 146 transitions.
[2025-04-28 21:22:08,305 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2025-04-28 21:22:08,306 INFO  L79                 Accepts]: Start accepts. Automaton has  has 29 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 20 states have internal predecessors, (34), 22 states have call successors, (30), 1 states have call predecessors, (30), 14 states have return successors, (32), 21 states have call predecessors, (32), 22 states have call successors, (32) Word has length 68
[2025-04-28 21:22:08,306 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:22:08,308 INFO  L225             Difference]: With dead ends: 102
[2025-04-28 21:22:08,308 INFO  L226             Difference]: Without dead ends: 98
[2025-04-28 21:22:08,309 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=198, Invalid=1694, Unknown=0, NotChecked=0, Total=1892
[2025-04-28 21:22:08,310 INFO  L437           NwaCegarLoop]: 109 mSDtfsCounter, 23 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2319 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2025-04-28 21:22:08,310 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2319 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2025-04-28 21:22:08,311 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2025-04-28 21:22:08,321 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86.
[2025-04-28 21:22:08,322 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 40 states have internal predecessors, (48), 37 states have call successors, (37), 14 states have call predecessors, (37), 17 states have return successors, (43), 31 states have call predecessors, (43), 37 states have call successors, (43)
[2025-04-28 21:22:08,324 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 128 transitions.
[2025-04-28 21:22:08,324 INFO  L79                 Accepts]: Start accepts. Automaton has 86 states and 128 transitions. Word has length 68
[2025-04-28 21:22:08,324 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:22:08,324 INFO  L485      AbstractCegarLoop]: Abstraction has 86 states and 128 transitions.
[2025-04-28 21:22:08,325 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 29 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 20 states have internal predecessors, (34), 22 states have call successors, (30), 1 states have call predecessors, (30), 14 states have return successors, (32), 21 states have call predecessors, (32), 22 states have call successors, (32)
[2025-04-28 21:22:08,325 INFO  L278                IsEmpty]: Start isEmpty. Operand 86 states and 128 transitions.
[2025-04-28 21:22:08,327 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2025-04-28 21:22:08,327 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:22:08,327 INFO  L218           NwaCegarLoop]: trace histogram [7, 7, 2, 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, 1]
[2025-04-28 21:22:08,333 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-04-28 21:22:08,530 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:08,530 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:22:08,530 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:22:08,531 INFO  L85        PathProgramCache]: Analyzing trace with hash 1842852606, now seen corresponding path program 1 times
[2025-04-28 21:22:08,531 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:22:08,531 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769105259]
[2025-04-28 21:22:08,531 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:08,531 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:22:08,585 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes.
[2025-04-28 21:22:08,613 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements.
[2025-04-28 21:22:08,614 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:08,614 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:10,552 INFO  L134       CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked.
[2025-04-28 21:22:10,552 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:22:10,552 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769105259]
[2025-04-28 21:22:10,552 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769105259] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:22:10,552 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:22:10,553 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2025-04-28 21:22:10,553 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513753236]
[2025-04-28 21:22:10,553 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:22:10,554 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2025-04-28 21:22:10,554 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:22:10,555 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2025-04-28 21:22:10,555 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156
[2025-04-28 21:22:10,555 INFO  L87              Difference]: Start difference. First operand 86 states and 128 transitions. Second operand  has 13 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 9 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15)
[2025-04-28 21:22:10,887 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:22:10,887 INFO  L93              Difference]: Finished difference Result 88 states and 129 transitions.
[2025-04-28 21:22:10,887 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2025-04-28 21:22:10,888 INFO  L79                 Accepts]: Start accepts. Automaton has  has 13 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 9 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15) Word has length 68
[2025-04-28 21:22:10,888 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:22:10,889 INFO  L225             Difference]: With dead ends: 88
[2025-04-28 21:22:10,890 INFO  L226             Difference]: Without dead ends: 86
[2025-04-28 21:22:10,890 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240
[2025-04-28 21:22:10,891 INFO  L437           NwaCegarLoop]: 108 mSDtfsCounter, 6 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2025-04-28 21:22:10,891 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1151 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2025-04-28 21:22:10,892 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2025-04-28 21:22:10,899 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80.
[2025-04-28 21:22:10,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 38 states have internal predecessors, (46), 35 states have call successors, (35), 14 states have call predecessors, (35), 15 states have return successors, (36), 27 states have call predecessors, (36), 35 states have call successors, (36)
[2025-04-28 21:22:10,901 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 117 transitions.
[2025-04-28 21:22:10,901 INFO  L79                 Accepts]: Start accepts. Automaton has 80 states and 117 transitions. Word has length 68
[2025-04-28 21:22:10,902 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:22:10,902 INFO  L485      AbstractCegarLoop]: Abstraction has 80 states and 117 transitions.
[2025-04-28 21:22:10,902 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 9 states have call successors, (15), 1 states have call predecessors, (15), 8 states have return successors, (15), 10 states have call predecessors, (15), 9 states have call successors, (15)
[2025-04-28 21:22:10,902 INFO  L278                IsEmpty]: Start isEmpty. Operand 80 states and 117 transitions.
[2025-04-28 21:22:10,905 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2025-04-28 21:22:10,905 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:22:10,906 INFO  L218           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 21:22:10,906 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2025-04-28 21:22:10,906 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:22:10,907 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:22:10,907 INFO  L85        PathProgramCache]: Analyzing trace with hash -303899318, now seen corresponding path program 1 times
[2025-04-28 21:22:10,907 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:22:10,907 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300976900]
[2025-04-28 21:22:10,907 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:10,907 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:22:10,967 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes.
[2025-04-28 21:22:11,020 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements.
[2025-04-28 21:22:11,020 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:11,020 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:14,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked.
[2025-04-28 21:22:14,761 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:22:14,761 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300976900]
[2025-04-28 21:22:14,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300976900] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:22:14,761 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714619403]
[2025-04-28 21:22:14,762 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:14,762 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:14,764 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:22:14,766 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:22:14,767 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2025-04-28 21:22:15,066 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes.
[2025-04-28 21:22:15,265 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements.
[2025-04-28 21:22:15,265 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:15,266 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:15,272 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1357 conjuncts, 59 conjuncts are in the unsatisfiable core
[2025-04-28 21:22:15,282 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:22:15,307 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2025-04-28 21:22:15,311 INFO  L354             Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46
