./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-027.smt2 .


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This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:46,328 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:46,431 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982164f-badb-4d06-a2a7-0997cab1d751/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:46,437 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:46,437 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:46,476 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:46,477 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:46,478 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:46,479 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:46,479 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:46,480 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:46,480 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:46,481 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:46,481 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:46,481 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:46,481 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:46,483 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:46,483 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:46,483 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:46,483 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:46,483 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:46,484 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:46,484 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:46,484 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:46,484 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:46,485 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:46,485 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:46,855 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:46,873 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:46,876 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:46,880 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:46,881 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:46,883 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982164f-badb-4d06-a2a7-0997cab1d751/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-027.smt2
[2025-04-28 21:21:46,887 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:46,895 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:47,333 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e982164f-badb-4d06-a2a7-0997cab1d751/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-027.smt2
[2025-04-28 21:21:47,336 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:47,338 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:47,339 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:47,339 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:47,339 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:47,342 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,391 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47 Unit
[2025-04-28 21:21:47,392 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:47,393 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:47,394 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:47,394 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:47,408 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,408 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,436 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,436 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,445 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,446 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,451 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,455 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,457 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,487 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:47,491 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:47,491 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:47,491 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:47,492 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (1/1) ...
[2025-04-28 21:21:47,499 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:47,516 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:47,534 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 21:21:47,538 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 21:21:47,553 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:47,553 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:47,553 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:47,553 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure realizable given in one single declaration
[2025-04-28 21:21:47,553 INFO  L130     BoogieDeclarations]: Found specification of procedure realizable
[2025-04-28 21:21:47,554 INFO  L138     BoogieDeclarations]: Found implementation of procedure realizable
[2025-04-28 21:21:47,554 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__sem given in one single declaration
[2025-04-28 21:21:47,554 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__sem
[2025-04-28 21:21:47,554 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__sem
[2025-04-28 21:21:47,555 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__sem given in one single declaration
[2025-04-28 21:21:47,555 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__sem
[2025-04-28 21:21:47,555 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__sem
[2025-04-28 21:21:47,555 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcA__sem given in one single declaration
[2025-04-28 21:21:47,555 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA__sem
[2025-04-28 21:21:47,555 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA__sem
[2025-04-28 21:21:47,555 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS__sem given in one single declaration
[2025-04-28 21:21:47,555 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS__sem
[2025-04-28 21:21:47,555 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS__sem
[2025-04-28 21:21:47,555 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS1__sem given in one single declaration
[2025-04-28 21:21:47,555 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS1__sem
[2025-04-28 21:21:47,556 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS1__sem
[2025-04-28 21:21:47,556 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__sem given in one single declaration
[2025-04-28 21:21:47,556 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__sem
[2025-04-28 21:21:47,556 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__sem
[2025-04-28 21:21:47,556 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__syn given in one single declaration
[2025-04-28 21:21:47,556 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__syn
[2025-04-28 21:21:47,556 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__syn
[2025-04-28 21:21:47,556 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS__syn given in one single declaration
[2025-04-28 21:21:47,556 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS__syn
[2025-04-28 21:21:47,556 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS__syn
[2025-04-28 21:21:47,556 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS1__syn given in one single declaration
[2025-04-28 21:21:47,556 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS1__syn
[2025-04-28 21:21:47,557 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS1__syn
[2025-04-28 21:21:47,557 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcA__syn given in one single declaration
[2025-04-28 21:21:47,557 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA__syn
[2025-04-28 21:21:47,557 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA__syn
[2025-04-28 21:21:47,557 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__syn given in one single declaration
[2025-04-28 21:21:47,557 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__syn
[2025-04-28 21:21:47,557 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__syn
[2025-04-28 21:21:47,557 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__syn given in one single declaration
[2025-04-28 21:21:47,557 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__syn
[2025-04-28 21:21:47,561 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__syn
[2025-04-28 21:21:47,562 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:47,562 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:47,562 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:47,730 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:47,736 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:48,098 INFO  L?                        ?]: Removed 30 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:48,098 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:48,123 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:48,124 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:48,124 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:48 BoogieIcfgContainer
[2025-04-28 21:21:48,124 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:48,129 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:48,129 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:48,134 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:48,134 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:47" (1/3) ...
[2025-04-28 21:21:48,135 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db05bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:48, skipping insertion in model container
[2025-04-28 21:21:48,136 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:47" (2/3) ...
[2025-04-28 21:21:48,136 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db05bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:48, skipping insertion in model container
[2025-04-28 21:21:48,136 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:48" (3/3) ...
[2025-04-28 21:21:48,139 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:48,158 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:48,161 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 21:21:48,232 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:48,250 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;@3b2230e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:48,250 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:48,255 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 21:21:48,274 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2025-04-28 21:21:48,274 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:48,275 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 21:21:48,276 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:48,281 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:48,283 INFO  L85        PathProgramCache]: Analyzing trace with hash -2083080839, now seen corresponding path program 1 times
[2025-04-28 21:21:48,295 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:48,295 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133981869]
[2025-04-28 21:21:48,295 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:48,296 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:48,366 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes.
[2025-04-28 21:21:48,470 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements.
[2025-04-28 21:21:48,474 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:48,474 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:48,810 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 21:21:48,810 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:48,810 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133981869]
[2025-04-28 21:21:48,811 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133981869] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:48,811 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:48,815 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2025-04-28 21:21:48,816 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240464937]
[2025-04-28 21:21:48,817 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:48,825 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2025-04-28 21:21:48,825 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:48,861 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2025-04-28 21:21:48,862 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:48,866 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 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14)
[2025-04-28 21:21:48,969 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:48,969 INFO  L93              Difference]: Finished difference Result 80 states and 117 transitions.
[2025-04-28 21:21:48,971 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2025-04-28 21:21:48,973 INFO  L79                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 64
[2025-04-28 21:21:48,974 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:48,985 INFO  L225             Difference]: With dead ends: 80
[2025-04-28 21:21:48,985 INFO  L226             Difference]: Without dead ends: 80
[2025-04-28 21:21:48,987 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2025-04-28 21:21:48,994 INFO  L437           NwaCegarLoop]: 114 mSDtfsCounter, 1 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:48,995 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 334 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2025-04-28 21:21:49,045 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2025-04-28 21:21:49,098 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2025-04-28 21:21:49,102 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 21:21:49,115 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 117 transitions.
[2025-04-28 21:21:49,117 INFO  L79                 Accepts]: Start accepts. Automaton has 80 states and 117 transitions. Word has length 64
[2025-04-28 21:21:49,118 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:49,119 INFO  L485      AbstractCegarLoop]: Abstraction has 80 states and 117 transitions.
[2025-04-28 21:21:49,120 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14)
[2025-04-28 21:21:49,120 INFO  L278                IsEmpty]: Start isEmpty. Operand 80 states and 117 transitions.
[2025-04-28 21:21:49,131 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2025-04-28 21:21:49,131 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:49,131 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 21:21:49,132 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:49,132 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:49,133 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:49,133 INFO  L85        PathProgramCache]: Analyzing trace with hash -1443848931, now seen corresponding path program 1 times
[2025-04-28 21:21:49,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:49,134 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144505088]
[2025-04-28 21:21:49,134 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:49,134 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:49,235 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes.
[2025-04-28 21:21:49,336 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements.
[2025-04-28 21:21:49,336 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:49,336 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:50,430 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 21:21:50,430 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:50,430 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144505088]
[2025-04-28 21:21:50,430 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144505088] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:50,430 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105351442]
[2025-04-28 21:21:50,430 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:50,430 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:50,435 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:50,439 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 21:21:50,441 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:50,624 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes.
[2025-04-28 21:21:50,826 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements.
[2025-04-28 21:21:50,826 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:50,826 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:50,833 INFO  L256         TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 10 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:50,854 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:50,966 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2025-04-28 21:21:50,979 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 18
[2025-04-28 21:21:51,240 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 21:21:51,241 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:21:52,341 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 21:21:52,341 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [105351442] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:21:52,341 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:21:52,342 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10
[2025-04-28 21:21:52,342 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606765355]
[2025-04-28 21:21:52,342 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:21:52,343 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2025-04-28 21:21:52,343 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:52,344 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2025-04-28 21:21:52,346 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2025-04-28 21:21:52,347 INFO  L87              Difference]: Start difference. First operand 80 states and 117 transitions. Second operand  has 10 states, 5 states have (on average 7.2) internal successors, (36), 10 states have internal predecessors, (36), 6 states have call successors, (32), 1 states have call predecessors, (32), 5 states have return successors, (32), 9 states have call predecessors, (32), 6 states have call successors, (32)
[2025-04-28 21:21:52,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:52,487 INFO  L93              Difference]: Finished difference Result 82 states and 119 transitions.
[2025-04-28 21:21:52,488 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2025-04-28 21:21:52,488 INFO  L79                 Accepts]: Start accepts. Automaton has  has 10 states, 5 states have (on average 7.2) internal successors, (36), 10 states have internal predecessors, (36), 6 states have call successors, (32), 1 states have call predecessors, (32), 5 states have return successors, (32), 9 states have call predecessors, (32), 6 states have call successors, (32) Word has length 116
[2025-04-28 21:21:52,489 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:52,490 INFO  L225             Difference]: With dead ends: 82
[2025-04-28 21:21:52,491 INFO  L226             Difference]: Without dead ends: 82
[2025-04-28 21:21:52,491 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132
[2025-04-28 21:21:52,494 INFO  L437           NwaCegarLoop]: 113 mSDtfsCounter, 3 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:52,494 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 760 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:52,495 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2025-04-28 21:21:52,509 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82.
[2025-04-28 21:21:52,510 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 39 states have internal predecessors, (47), 35 states have call successors, (35), 14 states have call predecessors, (35), 16 states have return successors, (37), 28 states have call predecessors, (37), 35 states have call successors, (37)
[2025-04-28 21:21:52,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 119 transitions.
[2025-04-28 21:21:52,515 INFO  L79                 Accepts]: Start accepts. Automaton has 82 states and 119 transitions. Word has length 116
[2025-04-28 21:21:52,516 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:52,516 INFO  L485      AbstractCegarLoop]: Abstraction has 82 states and 119 transitions.
[2025-04-28 21:21:52,516 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 5 states have (on average 7.2) internal successors, (36), 10 states have internal predecessors, (36), 6 states have call successors, (32), 1 states have call predecessors, (32), 5 states have return successors, (32), 9 states have call predecessors, (32), 6 states have call successors, (32)
[2025-04-28 21:21:52,516 INFO  L278                IsEmpty]: Start isEmpty. Operand 82 states and 119 transitions.
[2025-04-28 21:21:52,523 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2025-04-28 21:21:52,523 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:52,523 INFO  L218           NwaCegarLoop]: trace histogram [12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2025-04-28 21:21:52,532 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-04-28 21:21:52,724 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:52,724 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:52,725 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:52,725 INFO  L85        PathProgramCache]: Analyzing trace with hash 496642230, now seen corresponding path program 1 times
[2025-04-28 21:21:52,725 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:52,725 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028767910]
[2025-04-28 21:21:52,725 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:52,726 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:52,793 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes.
[2025-04-28 21:21:52,892 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements.
[2025-04-28 21:21:52,893 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:52,893 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:54,095 INFO  L134       CoverageAnalysis]: Checked inductivity of 327 backedges. 20 proven. 31 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2025-04-28 21:21:54,095 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:54,096 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028767910]
[2025-04-28 21:21:54,096 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028767910] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:54,096 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811580544]
[2025-04-28 21:21:54,096 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:54,096 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:54,098 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:54,100 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 21:21:54,104 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2025-04-28 21:21:54,324 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes.
[2025-04-28 21:21:54,583 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements.
[2025-04-28 21:21:54,583 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:54,583 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:54,592 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 15 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:54,603 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:54,649 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2025-04-28 21:21:54,655 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 18
[2025-04-28 21:21:54,944 INFO  L134       CoverageAnalysis]: Checked inductivity of 327 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2025-04-28 21:21:54,946 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:21:56,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 327 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked.
[2025-04-28 21:21:56,790 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811580544] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:21:56,790 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:21:56,790 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 18
[2025-04-28 21:21:56,790 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029103956]
[2025-04-28 21:21:56,790 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:21:56,791 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2025-04-28 21:21:56,793 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:56,794 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2025-04-28 21:21:56,798 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306
[2025-04-28 21:21:56,798 INFO  L87              Difference]: Start difference. First operand 82 states and 119 transitions. Second operand  has 18 states, 9 states have (on average 5.111111111111111) internal successors, (46), 16 states have internal predecessors, (46), 12 states have call successors, (38), 1 states have call predecessors, (38), 9 states have return successors, (38), 13 states have call predecessors, (38), 12 states have call successors, (38)
[2025-04-28 21:21:57,481 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:57,482 INFO  L93              Difference]: Finished difference Result 108 states and 177 transitions.
[2025-04-28 21:21:57,482 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2025-04-28 21:21:57,482 INFO  L79                 Accepts]: Start accepts. Automaton has  has 18 states, 9 states have (on average 5.111111111111111) internal successors, (46), 16 states have internal predecessors, (46), 12 states have call successors, (38), 1 states have call predecessors, (38), 9 states have return successors, (38), 13 states have call predecessors, (38), 12 states have call successors, (38) Word has length 168
[2025-04-28 21:21:57,485 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:57,487 INFO  L225             Difference]: With dead ends: 108
[2025-04-28 21:21:57,487 INFO  L226             Difference]: Without dead ends: 108
[2025-04-28 21:21:57,488 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812
[2025-04-28 21:21:57,489 INFO  L437           NwaCegarLoop]: 107 mSDtfsCounter, 11 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:57,489 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1510 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2025-04-28 21:21:57,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2025-04-28 21:21:57,504 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 88.
[2025-04-28 21:21:57,504 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 88 states, 32 states have (on average 1.53125) internal successors, (49), 42 states have internal predecessors, (49), 37 states have call successors, (37), 14 states have call predecessors, (37), 18 states have return successors, (50), 31 states have call predecessors, (50), 37 states have call successors, (50)
[2025-04-28 21:21:57,506 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 136 transitions.
[2025-04-28 21:21:57,506 INFO  L79                 Accepts]: Start accepts. Automaton has 88 states and 136 transitions. Word has length 168
[2025-04-28 21:21:57,507 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:57,507 INFO  L485      AbstractCegarLoop]: Abstraction has 88 states and 136 transitions.
[2025-04-28 21:21:57,507 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 18 states, 9 states have (on average 5.111111111111111) internal successors, (46), 16 states have internal predecessors, (46), 12 states have call successors, (38), 1 states have call predecessors, (38), 9 states have return successors, (38), 13 states have call predecessors, (38), 12 states have call successors, (38)
[2025-04-28 21:21:57,507 INFO  L278                IsEmpty]: Start isEmpty. Operand 88 states and 136 transitions.
[2025-04-28 21:21:57,510 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 169
[2025-04-28 21:21:57,510 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:57,510 INFO  L218           NwaCegarLoop]: trace histogram [12, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2025-04-28 21:21:57,520 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2025-04-28 21:21:57,715 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:57,715 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:57,716 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:57,716 INFO  L85        PathProgramCache]: Analyzing trace with hash 1000691620, now seen corresponding path program 1 times
[2025-04-28 21:21:57,716 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:57,716 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240315078]
[2025-04-28 21:21:57,716 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:57,716 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:57,759 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes.
[2025-04-28 21:21:57,838 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements.
[2025-04-28 21:21:57,839 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:57,839 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:59,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked.
[2025-04-28 21:21:59,274 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:59,274 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240315078]
[2025-04-28 21:21:59,274 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240315078] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:59,274 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150855336]
[2025-04-28 21:21:59,274 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:59,274 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:59,277 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:59,279 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:21:59,283 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2025-04-28 21:21:59,480 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes.
[2025-04-28 21:21:59,696 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements.
[2025-04-28 21:21:59,696 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:59,696 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:59,704 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 17 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:59,712 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:59,745 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2025-04-28 21:21:59,753 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26
[2025-04-28 21:22:00,080 INFO  L134       CoverageAnalysis]: Checked inductivity of 323 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2025-04-28 21:22:00,080 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:22:02,110 INFO  L134       CoverageAnalysis]: Checked inductivity of 323 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2025-04-28 21:22:02,111 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150855336] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:22:02,111 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:22:02,111 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24
[2025-04-28 21:22:02,111 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554925972]
[2025-04-28 21:22:02,111 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:22:02,112 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2025-04-28 21:22:02,112 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:22:02,113 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2025-04-28 21:22:02,114 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552
[2025-04-28 21:22:02,114 INFO  L87              Difference]: Start difference. First operand 88 states and 136 transitions. Second operand  has 24 states, 11 states have (on average 5.0) internal successors, (55), 20 states have internal predecessors, (55), 16 states have call successors, (47), 1 states have call predecessors, (47), 11 states have return successors, (48), 17 states have call predecessors, (48), 16 states have call successors, (48)
[2025-04-28 21:22:03,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:22:03,086 INFO  L93              Difference]: Finished difference Result 127 states and 254 transitions.
[2025-04-28 21:22:03,086 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2025-04-28 21:22:03,087 INFO  L79                 Accepts]: Start accepts. Automaton has  has 24 states, 11 states have (on average 5.0) internal successors, (55), 20 states have internal predecessors, (55), 16 states have call successors, (47), 1 states have call predecessors, (47), 11 states have return successors, (48), 17 states have call predecessors, (48), 16 states have call successors, (48) Word has length 168
[2025-04-28 21:22:03,088 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:22:03,093 INFO  L225             Difference]: With dead ends: 127
[2025-04-28 21:22:03,093 INFO  L226             Difference]: Without dead ends: 127
[2025-04-28 21:22:03,094 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=1029, Unknown=0, NotChecked=0, Total=1190
[2025-04-28 21:22:03,095 INFO  L437           NwaCegarLoop]: 108 mSDtfsCounter, 13 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2025-04-28 21:22:03,095 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1903 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2025-04-28 21:22:03,096 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2025-04-28 21:22:03,124 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 103.
[2025-04-28 21:22:03,128 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 49 states have internal predecessors, (54), 42 states have call successors, (42), 14 states have call predecessors, (42), 23 states have return successors, (87), 39 states have call predecessors, (87), 42 states have call successors, (87)
[2025-04-28 21:22:03,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 183 transitions.
[2025-04-28 21:22:03,134 INFO  L79                 Accepts]: Start accepts. Automaton has 103 states and 183 transitions. Word has length 168
[2025-04-28 21:22:03,135 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:22:03,135 INFO  L485      AbstractCegarLoop]: Abstraction has 103 states and 183 transitions.
[2025-04-28 21:22:03,135 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 24 states, 11 states have (on average 5.0) internal successors, (55), 20 states have internal predecessors, (55), 16 states have call successors, (47), 1 states have call predecessors, (47), 11 states have return successors, (48), 17 states have call predecessors, (48), 16 states have call successors, (48)
[2025-04-28 21:22:03,135 INFO  L278                IsEmpty]: Start isEmpty. Operand 103 states and 183 transitions.
[2025-04-28 21:22:03,140 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2025-04-28 21:22:03,142 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:22:03,143 INFO  L218           NwaCegarLoop]: trace histogram [13, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2025-04-28 21:22:03,153 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2025-04-28 21:22:03,343 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:03,344 INFO  L403      AbstractCegarLoop]: === Iteration 5 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:22:03,344 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:22:03,344 INFO  L85        PathProgramCache]: Analyzing trace with hash -1512357801, now seen corresponding path program 1 times
[2025-04-28 21:22:03,344 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:22:03,344 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559786846]
[2025-04-28 21:22:03,345 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:03,345 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:22:03,378 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes.
[2025-04-28 21:22:03,425 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements.
[2025-04-28 21:22:03,426 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:03,426 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:04,294 INFO  L134       CoverageAnalysis]: Checked inductivity of 360 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked.
[2025-04-28 21:22:04,294 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:22:04,294 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559786846]
[2025-04-28 21:22:04,294 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559786846] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:22:04,294 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67230915]
[2025-04-28 21:22:04,294 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:04,294 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:04,297 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:22:04,299 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:22:04,303 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2025-04-28 21:22:04,519 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes.
[2025-04-28 21:22:04,730 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements.
[2025-04-28 21:22:04,730 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:04,730 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:04,737 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 21 conjuncts are in the unsatisfiable core
[2025-04-28 21:22:04,745 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:22:04,776 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2025-04-28 21:22:04,783 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 18
[2025-04-28 21:22:05,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 360 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked.
[2025-04-28 21:22:05,091 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:22:07,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 360 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked.
[2025-04-28 21:22:07,192 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [67230915] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:22:07,192 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:22:07,192 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22
[2025-04-28 21:22:07,192 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527607295]
[2025-04-28 21:22:07,192 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:22:07,193 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2025-04-28 21:22:07,193 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:22:07,194 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2025-04-28 21:22:07,194 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462
[2025-04-28 21:22:07,195 INFO  L87              Difference]: Start difference. First operand 103 states and 183 transitions. Second operand  has 22 states, 10 states have (on average 5.2) internal successors, (52), 19 states have internal predecessors, (52), 15 states have call successors, (44), 1 states have call predecessors, (44), 10 states have return successors, (44), 15 states have call predecessors, (44), 15 states have call successors, (44)
[2025-04-28 21:22:08,235 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:22:08,235 INFO  L93              Difference]: Finished difference Result 133 states and 296 transitions.
[2025-04-28 21:22:08,236 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2025-04-28 21:22:08,236 INFO  L79                 Accepts]: Start accepts. Automaton has  has 22 states, 10 states have (on average 5.2) internal successors, (52), 19 states have internal predecessors, (52), 15 states have call successors, (44), 1 states have call predecessors, (44), 10 states have return successors, (44), 15 states have call predecessors, (44), 15 states have call successors, (44) Word has length 172
[2025-04-28 21:22:08,237 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:22:08,240 INFO  L225             Difference]: With dead ends: 133
[2025-04-28 21:22:08,240 INFO  L226             Difference]: Without dead ends: 133
[2025-04-28 21:22:08,240 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 332 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190
[2025-04-28 21:22:08,241 INFO  L437           NwaCegarLoop]: 112 mSDtfsCounter, 17 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2025-04-28 21:22:08,241 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1858 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2025-04-28 21:22:08,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2025-04-28 21:22:08,265 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 105.
[2025-04-28 21:22:08,265 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 105 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 51 states have internal predecessors, (55), 42 states have call successors, (42), 14 states have call predecessors, (42), 24 states have return successors, (96), 39 states have call predecessors, (96), 42 states have call successors, (96)
[2025-04-28 21:22:08,267 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 193 transitions.
[2025-04-28 21:22:08,267 INFO  L79                 Accepts]: Start accepts. Automaton has 105 states and 193 transitions. Word has length 172
[2025-04-28 21:22:08,268 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:22:08,268 INFO  L485      AbstractCegarLoop]: Abstraction has 105 states and 193 transitions.
[2025-04-28 21:22:08,268 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 10 states have (on average 5.2) internal successors, (52), 19 states have internal predecessors, (52), 15 states have call successors, (44), 1 states have call predecessors, (44), 10 states have return successors, (44), 15 states have call predecessors, (44), 15 states have call successors, (44)
[2025-04-28 21:22:08,268 INFO  L278                IsEmpty]: Start isEmpty. Operand 105 states and 193 transitions.
[2025-04-28 21:22:08,271 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2025-04-28 21:22:08,271 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:22:08,271 INFO  L218           NwaCegarLoop]: trace histogram [13, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2025-04-28 21:22:08,279 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2025-04-28 21:22:08,475 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2025-04-28 21:22:08,475 INFO  L403      AbstractCegarLoop]: === Iteration 6 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:22:08,476 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:22:08,476 INFO  L85        PathProgramCache]: Analyzing trace with hash -731142042, now seen corresponding path program 1 times
[2025-04-28 21:22:08,476 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:22:08,476 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75024519]
[2025-04-28 21:22:08,476 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:08,476 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:22:08,506 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes.
[2025-04-28 21:22:08,543 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements.
[2025-04-28 21:22:08,543 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:08,543 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:09,377 INFO  L134       CoverageAnalysis]: Checked inductivity of 358 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked.
[2025-04-28 21:22:09,378 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:22:09,378 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75024519]
[2025-04-28 21:22:09,378 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75024519] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:22:09,378 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611615226]
[2025-04-28 21:22:09,378 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:09,379 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:09,381 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:22:09,383 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:22:09,390 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2025-04-28 21:22:09,616 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes.
[2025-04-28 21:22:09,820 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements.
[2025-04-28 21:22:09,820 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:09,820 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:09,825 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 21 conjuncts are in the unsatisfiable core
[2025-04-28 21:22:09,831 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:22:09,859 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2025-04-28 21:22:09,863 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 18
[2025-04-28 21:22:10,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 358 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked.
[2025-04-28 21:22:10,132 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:22:12,185 INFO  L134       CoverageAnalysis]: Checked inductivity of 358 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked.
[2025-04-28 21:22:12,185 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611615226] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:22:12,185 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:22:12,186 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22
[2025-04-28 21:22:12,186 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154219053]
[2025-04-28 21:22:12,186 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:22:12,187 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2025-04-28 21:22:12,187 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:22:12,188 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2025-04-28 21:22:12,188 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462
[2025-04-28 21:22:12,188 INFO  L87              Difference]: Start difference. First operand 105 states and 193 transitions. Second operand  has 22 states, 10 states have (on average 5.3) internal successors, (53), 19 states have internal predecessors, (53), 15 states have call successors, (45), 1 states have call predecessors, (45), 10 states have return successors, (45), 15 states have call predecessors, (45), 15 states have call successors, (45)
[2025-04-28 21:22:13,280 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:22:13,281 INFO  L93              Difference]: Finished difference Result 133 states and 296 transitions.
[2025-04-28 21:22:13,281 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2025-04-28 21:22:13,281 INFO  L79                 Accepts]: Start accepts. Automaton has  has 22 states, 10 states have (on average 5.3) internal successors, (53), 19 states have internal predecessors, (53), 15 states have call successors, (45), 1 states have call predecessors, (45), 10 states have return successors, (45), 15 states have call predecessors, (45), 15 states have call successors, (45) Word has length 172
[2025-04-28 21:22:13,282 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:22:13,286 INFO  L225             Difference]: With dead ends: 133
[2025-04-28 21:22:13,288 INFO  L226             Difference]: Without dead ends: 133
[2025-04-28 21:22:13,289 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=979, Unknown=0, NotChecked=0, Total=1122
[2025-04-28 21:22:13,290 INFO  L437           NwaCegarLoop]: 111 mSDtfsCounter, 17 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2025-04-28 21:22:13,291 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1840 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2025-04-28 21:22:13,292 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2025-04-28 21:22:13,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 103.
[2025-04-28 21:22:13,333 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 103 states, 37 states have (on average 1.4594594594594594) internal successors, (54), 49 states have internal predecessors, (54), 42 states have call successors, (42), 14 states have call predecessors, (42), 23 states have return successors, (87), 39 states have call predecessors, (87), 42 states have call successors, (87)
[2025-04-28 21:22:13,334 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 183 transitions.
[2025-04-28 21:22:13,335 INFO  L79                 Accepts]: Start accepts. Automaton has 103 states and 183 transitions. Word has length 172
[2025-04-28 21:22:13,335 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:22:13,339 INFO  L485      AbstractCegarLoop]: Abstraction has 103 states and 183 transitions.
[2025-04-28 21:22:13,339 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 10 states have (on average 5.3) internal successors, (53), 19 states have internal predecessors, (53), 15 states have call successors, (45), 1 states have call predecessors, (45), 10 states have return successors, (45), 15 states have call predecessors, (45), 15 states have call successors, (45)
[2025-04-28 21:22:13,339 INFO  L278                IsEmpty]: Start isEmpty. Operand 103 states and 183 transitions.
[2025-04-28 21:22:13,342 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2025-04-28 21:22:13,342 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:22:13,342 INFO  L218           NwaCegarLoop]: trace histogram [13, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2025-04-28 21:22:13,351 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2025-04-28 21:22:13,543 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:13,543 INFO  L403      AbstractCegarLoop]: === Iteration 7 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:22:13,543 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:22:13,544 INFO  L85        PathProgramCache]: Analyzing trace with hash 285298796, now seen corresponding path program 1 times
[2025-04-28 21:22:13,544 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:22:13,544 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157706264]
[2025-04-28 21:22:13,544 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:13,544 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:22:13,577 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes.
[2025-04-28 21:22:13,611 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements.
[2025-04-28 21:22:13,612 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:13,612 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:15,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 359 backedges. 48 proven. 23 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked.
[2025-04-28 21:22:15,001 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:22:15,001 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157706264]
[2025-04-28 21:22:15,001 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157706264] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:22:15,001 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133417825]
[2025-04-28 21:22:15,001 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:15,001 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:15,003 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:22:15,005 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2025-04-28 21:22:15,009 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2025-04-28 21:22:15,260 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes.
[2025-04-28 21:22:15,464 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements.
[2025-04-28 21:22:15,464 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:15,464 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:15,472 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 49 conjuncts are in the unsatisfiable core
[2025-04-28 21:22:15,478 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
