./chc-comp-wrapper.sh ../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-115.smt2 .


--------------------------------------------------------------------------------


This is Ultimate 0.3.0-dev-42d8767-m
[2025-04-28 21:21:31,804 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2025-04-28 21:21:31,881 INFO  L114        SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcd3756-96b5-4093-b040-f01bd15e33a2/chc-comp25-scripts/participants/UltimateUnihorn/./chccomp-Unihorn_Default.epf
[2025-04-28 21:21:31,890 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2025-04-28 21:21:31,890 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2025-04-28 21:21:31,921 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2025-04-28 21:21:31,921 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2025-04-28 21:21:31,922 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2025-04-28 21:21:31,922 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2025-04-28 21:21:31,922 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2025-04-28 21:21:31,923 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2025-04-28 21:21:31,923 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2025-04-28 21:21:31,923 INFO  L153        SettingsManager]:  * Use SBE=true
[2025-04-28 21:21:31,923 INFO  L151        SettingsManager]: Preferences of ChcToBoogie differ from their defaults:
[2025-04-28 21:21:31,923 INFO  L153        SettingsManager]:  * Use one large procedure with gotos to replace tail recursive calls=false
[2025-04-28 21:21:31,924 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2025-04-28 21:21:31,924 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2025-04-28 21:21:31,924 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2025-04-28 21:21:31,924 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:31,924 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2025-04-28 21:21:31,924 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2025-04-28 21:21:31,924 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2025-04-28 21:21:31,925 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2025-04-28 21:21:31,925 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2025-04-28 21:21:31,925 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2025-04-28 21:21:31,926 INFO  L151        SettingsManager]: Preferences of SmtParser differ from their defaults:
[2025-04-28 21:21:31,926 INFO  L153        SettingsManager]:  * SmtParser Mode=UltimateTreeAutomizer
[2025-04-28 21:21:32,332 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2025-04-28 21:21:32,345 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2025-04-28 21:21:32,349 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2025-04-28 21:21:32,353 INFO  L270        PluginConnector]: Initializing SmtParser...
[2025-04-28 21:21:32,354 INFO  L274        PluginConnector]: SmtParser initialized
[2025-04-28 21:21:32,357 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcd3756-96b5-4093-b040-f01bd15e33a2/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-115.smt2
[2025-04-28 21:21:32,360 INFO  L314              SmtParser]: Parsing .smt2 file as a set of Horn Clauses
[2025-04-28 21:21:32,364 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
unknown
[2025-04-28 21:21:33,011 INFO  L339              SmtParser]: Successfully executed SMT file /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fcd3756-96b5-4093-b040-f01bd15e33a2/chc-comp25-scripts/participants/UltimateUnihorn/../../../chc-comp24-benchmarks/LIA-Arrays/chc-comp24-LIA-Arrays-115.smt2
[2025-04-28 21:21:33,018 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2025-04-28 21:21:33,020 INFO  L133        ToolchainWalker]: Walking toolchain with 4 elements.
[2025-04-28 21:21:33,021 INFO  L112        PluginConnector]: ------------------------ChcToBoogie----------------------------
[2025-04-28 21:21:33,021 INFO  L270        PluginConnector]: Initializing ChcToBoogie...
[2025-04-28 21:21:33,021 INFO  L274        PluginConnector]: ChcToBoogie initialized
[2025-04-28 21:21:33,025 INFO  L184        PluginConnector]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,105 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33 Unit
[2025-04-28 21:21:33,105 INFO  L131        PluginConnector]: ------------------------ END ChcToBoogie----------------------------
[2025-04-28 21:21:33,109 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2025-04-28 21:21:33,109 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2025-04-28 21:21:33,110 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2025-04-28 21:21:33,131 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,131 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,191 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,192 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,213 INFO  L184        PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,215 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,222 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,230 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,236 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,278 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2025-04-28 21:21:33,279 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2025-04-28 21:21:33,282 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2025-04-28 21:21:33,282 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2025-04-28 21:21:33,283 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (1/1) ...
[2025-04-28 21:21:33,288 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2025-04-28 21:21:33,306 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:33,322 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 21:21:33,326 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 21:21:33,343 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure False given in one single declaration
[2025-04-28 21:21:33,343 INFO  L130     BoogieDeclarations]: Found specification of procedure False
[2025-04-28 21:21:33,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure False
[2025-04-28 21:21:33,344 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure realizable given in one single declaration
[2025-04-28 21:21:33,344 INFO  L130     BoogieDeclarations]: Found specification of procedure realizable
[2025-04-28 21:21:33,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure realizable
[2025-04-28 21:21:33,344 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__syn given in one single declaration
[2025-04-28 21:21:33,344 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__syn
[2025-04-28 21:21:33,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__syn
[2025-04-28 21:21:33,344 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcStart__sem given in one single declaration
[2025-04-28 21:21:33,344 INFO  L130     BoogieDeclarations]: Found specification of procedure funcStart__sem
[2025-04-28 21:21:33,345 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcStart__sem
[2025-04-28 21:21:33,345 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS__sem given in one single declaration
[2025-04-28 21:21:33,345 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS__sem
[2025-04-28 21:21:33,345 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS__sem
[2025-04-28 21:21:33,345 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS1__sem given in one single declaration
[2025-04-28 21:21:33,345 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS1__sem
[2025-04-28 21:21:33,345 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS1__sem
[2025-04-28 21:21:33,345 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcA__sem given in one single declaration
[2025-04-28 21:21:33,345 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA__sem
[2025-04-28 21:21:33,345 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA__sem
[2025-04-28 21:21:33,345 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__sem given in one single declaration
[2025-04-28 21:21:33,346 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__sem
[2025-04-28 21:21:33,346 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__sem
[2025-04-28 21:21:33,346 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS2__sem given in one single declaration
[2025-04-28 21:21:33,346 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS2__sem
[2025-04-28 21:21:33,346 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS2__sem
[2025-04-28 21:21:33,346 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcP__sem given in one single declaration
[2025-04-28 21:21:33,346 INFO  L130     BoogieDeclarations]: Found specification of procedure funcP__sem
[2025-04-28 21:21:33,346 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcP__sem
[2025-04-28 21:21:33,346 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__sem given in one single declaration
[2025-04-28 21:21:33,346 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__sem
[2025-04-28 21:21:33,346 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__sem
[2025-04-28 21:21:33,347 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS__syn given in one single declaration
[2025-04-28 21:21:33,347 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS__syn
[2025-04-28 21:21:33,347 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS__syn
[2025-04-28 21:21:33,347 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS2__syn given in one single declaration
[2025-04-28 21:21:33,347 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS2__syn
[2025-04-28 21:21:33,347 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS2__syn
[2025-04-28 21:21:33,347 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcP__syn given in one single declaration
[2025-04-28 21:21:33,347 INFO  L130     BoogieDeclarations]: Found specification of procedure funcP__syn
[2025-04-28 21:21:33,347 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcP__syn
[2025-04-28 21:21:33,347 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcS1__syn given in one single declaration
[2025-04-28 21:21:33,348 INFO  L130     BoogieDeclarations]: Found specification of procedure funcS1__syn
[2025-04-28 21:21:33,348 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcS1__syn
[2025-04-28 21:21:33,348 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcA__syn given in one single declaration
[2025-04-28 21:21:33,348 INFO  L130     BoogieDeclarations]: Found specification of procedure funcA__syn
[2025-04-28 21:21:33,348 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcA__syn
[2025-04-28 21:21:33,348 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcE__syn given in one single declaration
[2025-04-28 21:21:33,348 INFO  L130     BoogieDeclarations]: Found specification of procedure funcE__syn
[2025-04-28 21:21:33,348 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcE__syn
[2025-04-28 21:21:33,348 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure funcB__syn given in one single declaration
[2025-04-28 21:21:33,348 INFO  L130     BoogieDeclarations]: Found specification of procedure funcB__syn
[2025-04-28 21:21:33,349 INFO  L138     BoogieDeclarations]: Found implementation of procedure funcB__syn
[2025-04-28 21:21:33,349 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Ultimate.START given in one single declaration
[2025-04-28 21:21:33,349 INFO  L130     BoogieDeclarations]: Found specification of procedure Ultimate.START
[2025-04-28 21:21:33,349 INFO  L138     BoogieDeclarations]: Found implementation of procedure Ultimate.START
[2025-04-28 21:21:33,579 INFO  L234             CfgBuilder]: Building ICFG
[2025-04-28 21:21:33,584 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2025-04-28 21:21:34,080 INFO  L?                        ?]: Removed 125 outVars from TransFormulas that were not future-live.
[2025-04-28 21:21:34,080 INFO  L283             CfgBuilder]: Performing block encoding
[2025-04-28 21:21:34,098 INFO  L304             CfgBuilder]: Using library mode
[2025-04-28 21:21:34,099 INFO  L312             CfgBuilder]: Removed 1 assume(true) statements.
[2025-04-28 21:21:34,099 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:34 BoogieIcfgContainer
[2025-04-28 21:21:34,099 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2025-04-28 21:21:34,102 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2025-04-28 21:21:34,102 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2025-04-28 21:21:34,110 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2025-04-28 21:21:34,110 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 28.04 09:21:33" (1/3) ...
[2025-04-28 21:21:34,111 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d11a2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 28.04 09:21:34, skipping insertion in model container
[2025-04-28 21:21:34,111 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 28.04 09:21:33" (2/3) ...
[2025-04-28 21:21:34,111 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d11a2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 09:21:34, skipping insertion in model container
[2025-04-28 21:21:34,112 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 09:21:34" (3/3) ...
[2025-04-28 21:21:34,113 INFO  L128   eAbstractionObserver]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver
[2025-04-28 21:21:34,131 INFO  L217   ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2025-04-28 21:21:34,134 INFO  L151   ceAbstractionStarter]: Applying trace abstraction to ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver that has 19 procedures, 94 locations, 168 edges, 19 initial locations, 0 loop locations, and 1 error locations.
[2025-04-28 21:21:34,202 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2025-04-28 21:21:34,221 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;@17f961b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2025-04-28 21:21:34,222 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2025-04-28 21:21:34,230 INFO  L278                IsEmpty]: Start isEmpty. Operand  has 94 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 49 states have internal predecessors, (57), 37 states have call successors, (37), 18 states have call predecessors, (37), 18 states have return successors, (37), 27 states have call predecessors, (37), 37 states have call successors, (37)
[2025-04-28 21:21:34,246 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2025-04-28 21:21:34,246 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:34,247 INFO  L218           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:34,250 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:34,259 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:34,260 INFO  L85        PathProgramCache]: Analyzing trace with hash -1294711004, now seen corresponding path program 1 times
[2025-04-28 21:21:34,304 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:34,304 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65968713]
[2025-04-28 21:21:34,305 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:34,305 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:34,404 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes.
[2025-04-28 21:21:34,570 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements.
[2025-04-28 21:21:34,575 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:34,575 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:35,855 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2025-04-28 21:21:35,856 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:35,856 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65968713]
[2025-04-28 21:21:35,857 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65968713] provided 1 perfect and 0 imperfect interpolant sequences
[2025-04-28 21:21:35,857 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2025-04-28 21:21:35,863 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2025-04-28 21:21:35,865 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836711358]
[2025-04-28 21:21:35,865 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2025-04-28 21:21:35,870 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2025-04-28 21:21:35,870 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:35,937 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2025-04-28 21:21:35,938 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2025-04-28 21:21:35,943 INFO  L87              Difference]: Start difference. First operand  has 94 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 49 states have internal predecessors, (57), 37 states have call successors, (37), 18 states have call predecessors, (37), 18 states have return successors, (37), 27 states have call predecessors, (37), 37 states have call successors, (37) Second operand  has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)
[2025-04-28 21:21:36,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:36,234 INFO  L93              Difference]: Finished difference Result 96 states and 133 transitions.
[2025-04-28 21:21:36,237 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2025-04-28 21:21:36,239 INFO  L79                 Accepts]: Start accepts. Automaton has  has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 44
[2025-04-28 21:21:36,240 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:36,257 INFO  L225             Difference]: With dead ends: 96
[2025-04-28 21:21:36,257 INFO  L226             Difference]: Without dead ends: 94
[2025-04-28 21:21:36,259 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2025-04-28 21:21:36,265 INFO  L437           NwaCegarLoop]: 125 mSDtfsCounter, 4 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:36,266 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 855 Invalid, 37 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2025-04-28 21:21:36,283 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2025-04-28 21:21:36,314 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2025-04-28 21:21:36,315 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 94 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 48 states have internal predecessors, (56), 37 states have call successors, (37), 18 states have call predecessors, (37), 19 states have return successors, (38), 27 states have call predecessors, (38), 37 states have call successors, (38)
[2025-04-28 21:21:36,324 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions.
[2025-04-28 21:21:36,326 INFO  L79                 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 44
[2025-04-28 21:21:36,327 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:36,327 INFO  L485      AbstractCegarLoop]: Abstraction has 94 states and 131 transitions.
[2025-04-28 21:21:36,327 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 5 states have (on average 4.4) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11)
[2025-04-28 21:21:36,327 INFO  L278                IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions.
[2025-04-28 21:21:36,331 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2025-04-28 21:21:36,331 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:36,331 INFO  L218           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:36,332 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2025-04-28 21:21:36,332 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:36,332 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:36,333 INFO  L85        PathProgramCache]: Analyzing trace with hash -1074865084, now seen corresponding path program 1 times
[2025-04-28 21:21:36,333 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:36,333 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441382025]
[2025-04-28 21:21:36,333 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:36,333 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:36,404 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes.
[2025-04-28 21:21:36,481 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements.
[2025-04-28 21:21:36,481 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:36,481 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:38,607 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2025-04-28 21:21:38,607 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:38,607 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441382025]
[2025-04-28 21:21:38,608 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441382025] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:38,608 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127487245]
[2025-04-28 21:21:38,608 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:38,608 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:38,612 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:38,615 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 21:21:38,618 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2025-04-28 21:21:38,929 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes.
[2025-04-28 21:21:39,152 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements.
[2025-04-28 21:21:39,152 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:39,152 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:39,160 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 25 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:39,175 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:39,236 INFO  L354             Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24
[2025-04-28 21:21:39,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2025-04-28 21:21:39,823 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:21:41,548 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 21:21:41,620 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 21:21:41,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2025-04-28 21:21:41,699 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127487245] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:21:41,699 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:21:41,699 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 31
[2025-04-28 21:21:41,700 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664274600]
[2025-04-28 21:21:41,700 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:21:41,701 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2025-04-28 21:21:41,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:41,702 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2025-04-28 21:21:41,703 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=856, Unknown=0, NotChecked=0, Total=930
[2025-04-28 21:21:41,703 INFO  L87              Difference]: Start difference. First operand 94 states and 131 transitions. Second operand  has 31 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 24 states have internal predecessors, (55), 21 states have call successors, (37), 1 states have call predecessors, (37), 15 states have return successors, (39), 24 states have call predecessors, (39), 21 states have call successors, (39)
[2025-04-28 21:21:42,617 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:42,617 INFO  L93              Difference]: Finished difference Result 106 states and 148 transitions.
[2025-04-28 21:21:42,617 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2025-04-28 21:21:42,618 INFO  L79                 Accepts]: Start accepts. Automaton has  has 31 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 24 states have internal predecessors, (55), 21 states have call successors, (37), 1 states have call predecessors, (37), 15 states have return successors, (39), 24 states have call predecessors, (39), 21 states have call successors, (39) Word has length 76
[2025-04-28 21:21:42,618 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:42,620 INFO  L225             Difference]: With dead ends: 106
[2025-04-28 21:21:42,620 INFO  L226             Difference]: Without dead ends: 104
[2025-04-28 21:21:42,621 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=158, Invalid=1648, Unknown=0, NotChecked=0, Total=1806
[2025-04-28 21:21:42,622 INFO  L437           NwaCegarLoop]: 122 mSDtfsCounter, 19 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:42,622 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3061 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2025-04-28 21:21:42,623 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2025-04-28 21:21:42,641 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102.
[2025-04-28 21:21:42,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 102 states, 40 states have (on average 1.475) internal successors, (59), 51 states have internal predecessors, (59), 39 states have call successors, (39), 18 states have call predecessors, (39), 22 states have return successors, (46), 32 states have call predecessors, (46), 39 states have call successors, (46)
[2025-04-28 21:21:42,645 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 144 transitions.
[2025-04-28 21:21:42,645 INFO  L79                 Accepts]: Start accepts. Automaton has 102 states and 144 transitions. Word has length 76
[2025-04-28 21:21:42,646 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:42,647 INFO  L485      AbstractCegarLoop]: Abstraction has 102 states and 144 transitions.
[2025-04-28 21:21:42,647 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 31 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 24 states have internal predecessors, (55), 21 states have call successors, (37), 1 states have call predecessors, (37), 15 states have return successors, (39), 24 states have call predecessors, (39), 21 states have call successors, (39)
[2025-04-28 21:21:42,647 INFO  L278                IsEmpty]: Start isEmpty. Operand 102 states and 144 transitions.
[2025-04-28 21:21:42,651 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2025-04-28 21:21:42,651 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:42,651 INFO  L218           NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:42,657 INFO  L552       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2025-04-28 21:21:42,853 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:42,853 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:42,854 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:42,854 INFO  L85        PathProgramCache]: Analyzing trace with hash -733128935, now seen corresponding path program 1 times
[2025-04-28 21:21:42,854 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:42,854 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963712878]
[2025-04-28 21:21:42,854 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:42,854 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:42,895 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes.
[2025-04-28 21:21:42,930 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements.
[2025-04-28 21:21:42,930 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:42,930 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:45,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2025-04-28 21:21:45,011 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:21:45,011 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963712878]
[2025-04-28 21:21:45,012 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963712878] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:21:45,012 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746271119]
[2025-04-28 21:21:45,012 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:45,012 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:45,014 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:21:45,017 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 21:21:45,021 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2025-04-28 21:21:45,258 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes.
[2025-04-28 21:21:45,492 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements.
[2025-04-28 21:21:45,492 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:45,492 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:21:45,504 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 43 conjuncts are in the unsatisfiable core
[2025-04-28 21:21:45,509 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:21:47,249 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2025-04-28 21:21:47,249 INFO  L312         TraceCheckSpWp]: Computing backward predicates...
[2025-04-28 21:21:57,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2025-04-28 21:21:57,065 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746271119] provided 0 perfect and 2 imperfect interpolant sequences
[2025-04-28 21:21:57,065 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2025-04-28 21:21:57,065 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 48
[2025-04-28 21:21:57,065 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680218263]
[2025-04-28 21:21:57,065 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2025-04-28 21:21:57,066 INFO  L562      AbstractCegarLoop]: INTERPOLANT automaton has 48 states
[2025-04-28 21:21:57,066 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2025-04-28 21:21:57,067 INFO  L144   InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2025-04-28 21:21:57,068 INFO  L146   InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=2125, Unknown=0, NotChecked=0, Total=2256
[2025-04-28 21:21:57,069 INFO  L87              Difference]: Start difference. First operand 102 states and 144 transitions. Second operand  has 48 states, 24 states have (on average 2.75) internal successors, (66), 36 states have internal predecessors, (66), 28 states have call successors, (42), 1 states have call predecessors, (42), 24 states have return successors, (44), 27 states have call predecessors, (44), 28 states have call successors, (44)
[2025-04-28 21:21:58,798 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2025-04-28 21:21:58,798 INFO  L93              Difference]: Finished difference Result 118 states and 168 transitions.
[2025-04-28 21:21:58,799 INFO  L140   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2025-04-28 21:21:58,799 INFO  L79                 Accepts]: Start accepts. Automaton has  has 48 states, 24 states have (on average 2.75) internal successors, (66), 36 states have internal predecessors, (66), 28 states have call successors, (42), 1 states have call predecessors, (42), 24 states have return successors, (44), 27 states have call predecessors, (44), 28 states have call successors, (44) Word has length 80
[2025-04-28 21:21:58,800 INFO  L85                 Accepts]: Finished accepts. some prefix is accepted.
[2025-04-28 21:21:58,802 INFO  L225             Difference]: With dead ends: 118
[2025-04-28 21:21:58,802 INFO  L226             Difference]: Without dead ends: 116
[2025-04-28 21:21:58,803 INFO  L436           NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=261, Invalid=3899, Unknown=0, NotChecked=0, Total=4160
[2025-04-28 21:21:58,804 INFO  L437           NwaCegarLoop]: 125 mSDtfsCounter, 22 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2025-04-28 21:21:58,804 INFO  L438           NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3369 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2025-04-28 21:21:58,805 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2025-04-28 21:21:58,817 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102.
[2025-04-28 21:21:58,817 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 102 states, 40 states have (on average 1.475) internal successors, (59), 51 states have internal predecessors, (59), 39 states have call successors, (39), 18 states have call predecessors, (39), 22 states have return successors, (46), 32 states have call predecessors, (46), 39 states have call successors, (46)
[2025-04-28 21:21:58,819 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 144 transitions.
[2025-04-28 21:21:58,819 INFO  L79                 Accepts]: Start accepts. Automaton has 102 states and 144 transitions. Word has length 80
[2025-04-28 21:21:58,819 INFO  L85                 Accepts]: Finished accepts. word is rejected.
[2025-04-28 21:21:58,820 INFO  L485      AbstractCegarLoop]: Abstraction has 102 states and 144 transitions.
[2025-04-28 21:21:58,820 INFO  L486      AbstractCegarLoop]: INTERPOLANT automaton has  has 48 states, 24 states have (on average 2.75) internal successors, (66), 36 states have internal predecessors, (66), 28 states have call successors, (42), 1 states have call predecessors, (42), 24 states have return successors, (44), 27 states have call predecessors, (44), 28 states have call successors, (44)
[2025-04-28 21:21:58,820 INFO  L278                IsEmpty]: Start isEmpty. Operand 102 states and 144 transitions.
[2025-04-28 21:21:58,823 INFO  L284                IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2025-04-28 21:21:58,823 INFO  L210           NwaCegarLoop]: Found error trace
[2025-04-28 21:21:58,823 INFO  L218           NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2025-04-28 21:21:58,830 INFO  L540       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2025-04-28 21:21:59,027 WARN  L466      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:21:59,027 INFO  L403      AbstractCegarLoop]: === Iteration 4 === Targeting Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY === [Ultimate.STARTErr0ASSERT_VIOLATIONCHC_SATISFIABILITY] ===
[2025-04-28 21:21:59,028 INFO  L155       PredicateUnifier]: Initialized classic predicate unifier
[2025-04-28 21:21:59,028 INFO  L85        PathProgramCache]: Analyzing trace with hash -1800468095, now seen corresponding path program 1 times
[2025-04-28 21:21:59,028 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2025-04-28 21:21:59,028 INFO  L324   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741804814]
[2025-04-28 21:21:59,028 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:21:59,028 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2025-04-28 21:21:59,068 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes.
[2025-04-28 21:21:59,099 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements.
[2025-04-28 21:21:59,099 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:21:59,100 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:00,576 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2025-04-28 21:22:00,576 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2025-04-28 21:22:00,576 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741804814]
[2025-04-28 21:22:00,576 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741804814] provided 0 perfect and 1 imperfect interpolant sequences
[2025-04-28 21:22:00,576 INFO  L324   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317078182]
[2025-04-28 21:22:00,576 INFO  L97    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2025-04-28 21:22:00,577 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2025-04-28 21:22:00,579 INFO  L189       MonitoredProcess]: No working directory specified, using /usr/bin/z3
[2025-04-28 21:22:00,581 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 21:22:00,584 INFO  L327       MonitoredProcess]: [MP /usr/bin/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2025-04-28 21:22:00,865 INFO  L108    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes.
[2025-04-28 21:22:01,070 INFO  L111    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements.
[2025-04-28 21:22:01,070 INFO  L114    AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s)
[2025-04-28 21:22:01,070 INFO  L115    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2025-04-28 21:22:01,076 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 38 conjuncts are in the unsatisfiable core
[2025-04-28 21:22:01,082 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2025-04-28 21:22:01,111 INFO  L189   IndexEqualityManager]: detected not equals via solver
[2025-04-28 21:22:01,116 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
