/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:05:10,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:05:10,306 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:05:10,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:05:10,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:05:10,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:05:10,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:05:10,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:05:10,344 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:05:10,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:05:10,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:05:10,345 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:05:10,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:05:10,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:05:10,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:05:10,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:05:10,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:05:10,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:05:10,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:05:10,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:05:10,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:05:10,350 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:05:10,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:05:10,351 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:05:10,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:05:10,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:05:10,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:05:10,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:05:10,352 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:05:10,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:05:10,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:05:10,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:05:10,353 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:05:10,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:05:10,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:05:10,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:05:10,621 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:05:10,621 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:05:10,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-11-17 16:05:11,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:05:11,999 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:05:12,000 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-11-17 16:05:12,008 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faabce533/f676ded95d49489bbafa570ca3fb9aa4/FLAG6e15f4cf9 [2023-11-17 16:05:12,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faabce533/f676ded95d49489bbafa570ca3fb9aa4 [2023-11-17 16:05:12,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:05:12,031 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:05:12,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:05:12,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:05:12,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:05:12,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e441a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12, skipping insertion in model container [2023-11-17 16:05:12,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,074 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:05:12,274 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2023-11-17 16:05:12,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:05:12,304 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:05:12,355 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c[3694,3707] [2023-11-17 16:05:12,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:05:12,367 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:05:12,367 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:05:12,374 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:05:12,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12 WrapperNode [2023-11-17 16:05:12,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:05:12,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:05:12,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:05:12,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:05:12,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,442 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 315 [2023-11-17 16:05:12,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:05:12,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:05:12,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:05:12,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:05:12,451 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:05:12,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:05:12,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:05:12,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:05:12,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (1/1) ... [2023-11-17 16:05:12,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:05:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:12,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:05:12,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:05:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:05:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:05:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:05:12,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:05:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:05:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:05:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:05:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:05:12,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:05:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:05:12,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:05:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:05:12,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:05:12,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:05:12,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:05:12,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:05:12,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:05:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:05:12,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:05:12,563 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:05:12,672 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:05:12,674 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:05:13,168 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:05:13,379 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:05:13,379 INFO L307 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-17 16:05:13,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:05:13 BoogieIcfgContainer [2023-11-17 16:05:13,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:05:13,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:05:13,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:05:13,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:05:13,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:05:12" (1/3) ... [2023-11-17 16:05:13,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753703bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:05:13, skipping insertion in model container [2023-11-17 16:05:13,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:12" (2/3) ... [2023-11-17 16:05:13,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753703bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:05:13, skipping insertion in model container [2023-11-17 16:05:13,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:05:13" (3/3) ... [2023-11-17 16:05:13,388 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2023-11-17 16:05:13,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:05:13,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:05:13,403 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:05:13,472 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 16:05:13,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 221 transitions, 470 flow [2023-11-17 16:05:13,609 INFO L124 PetriNetUnfolderBase]: 15/217 cut-off events. [2023-11-17 16:05:13,609 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:05:13,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 217 events. 15/217 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 175. Up to 2 conditions per place. [2023-11-17 16:05:13,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 221 transitions, 470 flow [2023-11-17 16:05:13,622 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 204 transitions, 432 flow [2023-11-17 16:05:13,626 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:05:13,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 204 transitions, 432 flow [2023-11-17 16:05:13,646 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 204 transitions, 432 flow [2023-11-17 16:05:13,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 204 transitions, 432 flow [2023-11-17 16:05:13,689 INFO L124 PetriNetUnfolderBase]: 15/204 cut-off events. [2023-11-17 16:05:13,690 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:05:13,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 204 events. 15/204 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 142 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 175. Up to 2 conditions per place. [2023-11-17 16:05:13,695 INFO L119 LiptonReduction]: Number of co-enabled transitions 2904 [2023-11-17 16:05:21,183 INFO L134 LiptonReduction]: Checked pairs total: 5253 [2023-11-17 16:05:21,183 INFO L136 LiptonReduction]: Total number of compositions: 204 [2023-11-17 16:05:21,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:05:21,201 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@188fc2d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:05:21,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 16:05:21,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:05:21,208 INFO L124 PetriNetUnfolderBase]: 5/34 cut-off events. [2023-11-17 16:05:21,208 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 16:05:21,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:21,209 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:21,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:21,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:21,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1975734847, now seen corresponding path program 1 times [2023-11-17 16:05:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:21,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272133628] [2023-11-17 16:05:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:21,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:21,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:21,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:21,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272133628] [2023-11-17 16:05:21,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272133628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:21,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:21,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:05:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504532542] [2023-11-17 16:05:21,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:05:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:21,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:05:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:05:21,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 425 [2023-11-17 16:05:21,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:21,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:21,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 425 [2023-11-17 16:05:21,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:22,307 INFO L124 PetriNetUnfolderBase]: 4382/5585 cut-off events. [2023-11-17 16:05:22,307 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2023-11-17 16:05:22,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11503 conditions, 5585 events. 4382/5585 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 24037 event pairs, 656 based on Foata normal form. 1/3759 useless extension candidates. Maximal degree in co-relation 9316. Up to 4602 conditions per place. [2023-11-17 16:05:22,345 INFO L140 encePairwiseOnDemand]: 419/425 looper letters, 51 selfloop transitions, 5 changer transitions 1/61 dead transitions. [2023-11-17 16:05:22,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 61 transitions, 281 flow [2023-11-17 16:05:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:05:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:05:22,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-11-17 16:05:22,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48784313725490197 [2023-11-17 16:05:22,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-11-17 16:05:22,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-11-17 16:05:22,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:22,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-11-17 16:05:22,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:22,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:22,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 425.0) internal successors, (1700), 4 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:22,378 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 94 flow. Second operand 3 states and 622 transitions. [2023-11-17 16:05:22,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 61 transitions, 281 flow [2023-11-17 16:05:22,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 251 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 16:05:22,397 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 111 flow [2023-11-17 16:05:22,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-11-17 16:05:22,403 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-11-17 16:05:22,403 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 111 flow [2023-11-17 16:05:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:22,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:22,404 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:22,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:05:22,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:22,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:22,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1214281547, now seen corresponding path program 1 times [2023-11-17 16:05:22,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:22,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618644499] [2023-11-17 16:05:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:22,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:22,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:22,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618644499] [2023-11-17 16:05:22,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618644499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:22,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:22,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:05:22,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430420742] [2023-11-17 16:05:22,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:22,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:05:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:05:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:05:22,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 425 [2023-11-17 16:05:22,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:22,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:22,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 425 [2023-11-17 16:05:22,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:23,242 INFO L124 PetriNetUnfolderBase]: 5147/6783 cut-off events. [2023-11-17 16:05:23,243 INFO L125 PetriNetUnfolderBase]: For 995/995 co-relation queries the response was YES. [2023-11-17 16:05:23,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15325 conditions, 6783 events. 5147/6783 cut-off events. For 995/995 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 32075 event pairs, 3005 based on Foata normal form. 1/4772 useless extension candidates. Maximal degree in co-relation 2011. Up to 5237 conditions per place. [2023-11-17 16:05:23,278 INFO L140 encePairwiseOnDemand]: 419/425 looper letters, 34 selfloop transitions, 2 changer transitions 26/66 dead transitions. [2023-11-17 16:05:23,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 66 transitions, 310 flow [2023-11-17 16:05:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:05:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:05:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 751 transitions. [2023-11-17 16:05:23,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44176470588235295 [2023-11-17 16:05:23,283 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 751 transitions. [2023-11-17 16:05:23,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 751 transitions. [2023-11-17 16:05:23,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:23,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 751 transitions. [2023-11-17 16:05:23,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:23,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:23,292 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:23,292 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 111 flow. Second operand 4 states and 751 transitions. [2023-11-17 16:05:23,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 66 transitions, 310 flow [2023-11-17 16:05:23,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 66 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:05:23,296 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 124 flow [2023-11-17 16:05:23,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2023-11-17 16:05:23,297 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-11-17 16:05:23,298 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 124 flow [2023-11-17 16:05:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:23,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:23,302 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:23,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:05:23,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:23,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1000722353, now seen corresponding path program 1 times [2023-11-17 16:05:23,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:23,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843410346] [2023-11-17 16:05:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843410346] [2023-11-17 16:05:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843410346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740843484] [2023-11-17 16:05:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:23,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:23,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:23,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:23,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:05:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:23,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:05:23,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:23,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:23,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740843484] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:23,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:23,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 16:05:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178608696] [2023-11-17 16:05:23,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:23,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:05:23,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:05:23,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:05:23,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 425 [2023-11-17 16:05:23,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 124 flow. Second operand has 10 states, 10 states have (on average 176.3) internal successors, (1763), 10 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:23,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:23,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 425 [2023-11-17 16:05:23,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:24,370 INFO L124 PetriNetUnfolderBase]: 5147/6785 cut-off events. [2023-11-17 16:05:24,370 INFO L125 PetriNetUnfolderBase]: For 2109/2109 co-relation queries the response was YES. [2023-11-17 16:05:24,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15755 conditions, 6785 events. 5147/6785 cut-off events. For 2109/2109 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 32026 event pairs, 3005 based on Foata normal form. 297/5930 useless extension candidates. Maximal degree in co-relation 15742. Up to 5236 conditions per place. [2023-11-17 16:05:24,409 INFO L140 encePairwiseOnDemand]: 419/425 looper letters, 59 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2023-11-17 16:05:24,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 334 flow [2023-11-17 16:05:24,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:05:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:05:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1098 transitions. [2023-11-17 16:05:24,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43058823529411766 [2023-11-17 16:05:24,413 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1098 transitions. [2023-11-17 16:05:24,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1098 transitions. [2023-11-17 16:05:24,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:24,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1098 transitions. [2023-11-17 16:05:24,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:24,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:24,422 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:24,422 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 124 flow. Second operand 6 states and 1098 transitions. [2023-11-17 16:05:24,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 334 flow [2023-11-17 16:05:24,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 326 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 16:05:24,425 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 159 flow [2023-11-17 16:05:24,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-17 16:05:24,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-11-17 16:05:24,426 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 159 flow [2023-11-17 16:05:24,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 176.3) internal successors, (1763), 10 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:24,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:24,427 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:24,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:24,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:24,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:24,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:24,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1168440926, now seen corresponding path program 1 times [2023-11-17 16:05:24,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:24,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454699941] [2023-11-17 16:05:24,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:24,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:24,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454699941] [2023-11-17 16:05:24,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454699941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847714831] [2023-11-17 16:05:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:24,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:24,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:24,782 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:24,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:05:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:24,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:05:24,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:24,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:25,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847714831] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:25,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:25,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 16:05:25,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442603247] [2023-11-17 16:05:25,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:25,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:05:25,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:25,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:05:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:05:25,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 425 [2023-11-17 16:05:25,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 159 flow. Second operand has 10 states, 10 states have (on average 176.9) internal successors, (1769), 10 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:25,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:25,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 425 [2023-11-17 16:05:25,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:25,600 INFO L124 PetriNetUnfolderBase]: 4241/5551 cut-off events. [2023-11-17 16:05:25,601 INFO L125 PetriNetUnfolderBase]: For 3308/3308 co-relation queries the response was YES. [2023-11-17 16:05:25,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13927 conditions, 5551 events. 4241/5551 cut-off events. For 3308/3308 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 24748 event pairs, 2379 based on Foata normal form. 0/4701 useless extension candidates. Maximal degree in co-relation 13453. Up to 5236 conditions per place. [2023-11-17 16:05:25,642 INFO L140 encePairwiseOnDemand]: 419/425 looper letters, 33 selfloop transitions, 4 changer transitions 20/61 dead transitions. [2023-11-17 16:05:25,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 313 flow [2023-11-17 16:05:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:05:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:05:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1093 transitions. [2023-11-17 16:05:25,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4286274509803922 [2023-11-17 16:05:25,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1093 transitions. [2023-11-17 16:05:25,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1093 transitions. [2023-11-17 16:05:25,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:25,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1093 transitions. [2023-11-17 16:05:25,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:25,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:25,654 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 425.0) internal successors, (2975), 7 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:25,654 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 159 flow. Second operand 6 states and 1093 transitions. [2023-11-17 16:05:25,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 313 flow [2023-11-17 16:05:25,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 298 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 16:05:25,659 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 142 flow [2023-11-17 16:05:25,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-11-17 16:05:25,664 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-17 16:05:25,666 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 142 flow [2023-11-17 16:05:25,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 176.9) internal successors, (1769), 10 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:25,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:25,667 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:25,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 16:05:25,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 16:05:25,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:25,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2036122121, now seen corresponding path program 2 times [2023-11-17 16:05:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:25,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666027094] [2023-11-17 16:05:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:25,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:05:26,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:26,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666027094] [2023-11-17 16:05:26,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666027094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:26,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:26,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:05:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908816864] [2023-11-17 16:05:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:26,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:05:26,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:05:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:05:26,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 425 [2023-11-17 16:05:26,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:26,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:26,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 425 [2023-11-17 16:05:26,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:27,070 INFO L124 PetriNetUnfolderBase]: 10059/12712 cut-off events. [2023-11-17 16:05:27,070 INFO L125 PetriNetUnfolderBase]: For 4238/4238 co-relation queries the response was YES. [2023-11-17 16:05:27,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32352 conditions, 12712 events. 10059/12712 cut-off events. For 4238/4238 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 57384 event pairs, 1610 based on Foata normal form. 1/12703 useless extension candidates. Maximal degree in co-relation 32322. Up to 5008 conditions per place. [2023-11-17 16:05:27,150 INFO L140 encePairwiseOnDemand]: 419/425 looper letters, 85 selfloop transitions, 8 changer transitions 1/98 dead transitions. [2023-11-17 16:05:27,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 510 flow [2023-11-17 16:05:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:05:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:05:27,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 833 transitions. [2023-11-17 16:05:27,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2023-11-17 16:05:27,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 833 transitions. [2023-11-17 16:05:27,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 833 transitions. [2023-11-17 16:05:27,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:27,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 833 transitions. [2023-11-17 16:05:27,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:27,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:27,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:27,159 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 142 flow. Second operand 4 states and 833 transitions. [2023-11-17 16:05:27,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 510 flow [2023-11-17 16:05:27,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 98 transitions, 498 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:05:27,163 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 206 flow [2023-11-17 16:05:27,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-11-17 16:05:27,165 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-17 16:05:27,165 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 206 flow [2023-11-17 16:05:27,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:27,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:27,166 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:27,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:05:27,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:27,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1180967874, now seen corresponding path program 2 times [2023-11-17 16:05:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214441876] [2023-11-17 16:05:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:27,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:27,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214441876] [2023-11-17 16:05:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214441876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342597565] [2023-11-17 16:05:27,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:05:27,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:27,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:27,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:27,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:05:27,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:05:27,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:27,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 16:05:27,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:05:27,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:05:27,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342597565] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:27,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:27,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 9 [2023-11-17 16:05:27,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086367753] [2023-11-17 16:05:27,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:27,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:05:27,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:27,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:05:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:05:27,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 425 [2023-11-17 16:05:27,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 206 flow. Second operand has 10 states, 10 states have (on average 176.4) internal successors, (1764), 10 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:27,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:27,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 425 [2023-11-17 16:05:27,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:29,034 INFO L124 PetriNetUnfolderBase]: 10759/13614 cut-off events. [2023-11-17 16:05:29,034 INFO L125 PetriNetUnfolderBase]: For 14989/14989 co-relation queries the response was YES. [2023-11-17 16:05:29,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41180 conditions, 13614 events. 10759/13614 cut-off events. For 14989/14989 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 61155 event pairs, 1425 based on Foata normal form. 1/13605 useless extension candidates. Maximal degree in co-relation 41151. Up to 12157 conditions per place. [2023-11-17 16:05:29,142 INFO L140 encePairwiseOnDemand]: 417/425 looper letters, 66 selfloop transitions, 12 changer transitions 10/92 dead transitions. [2023-11-17 16:05:29,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 92 transitions, 530 flow [2023-11-17 16:05:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:05:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:05:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1597 transitions. [2023-11-17 16:05:29,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41751633986928105 [2023-11-17 16:05:29,147 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1597 transitions. [2023-11-17 16:05:29,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1597 transitions. [2023-11-17 16:05:29,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:29,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1597 transitions. [2023-11-17 16:05:29,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.44444444444446) internal successors, (1597), 9 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:29,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 425.0) internal successors, (4250), 10 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:29,158 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 425.0) internal successors, (4250), 10 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:29,158 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 206 flow. Second operand 9 states and 1597 transitions. [2023-11-17 16:05:29,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 92 transitions, 530 flow [2023-11-17 16:05:29,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 494 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-11-17 16:05:29,182 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 263 flow [2023-11-17 16:05:29,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=263, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-11-17 16:05:29,183 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-11-17 16:05:29,183 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 263 flow [2023-11-17 16:05:29,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 176.4) internal successors, (1764), 10 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:29,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:29,184 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:29,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:29,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:29,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:29,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:29,393 INFO L85 PathProgramCache]: Analyzing trace with hash 872148287, now seen corresponding path program 1 times [2023-11-17 16:05:29,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:29,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739834490] [2023-11-17 16:05:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:30,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:30,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739834490] [2023-11-17 16:05:30,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739834490] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:30,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462784378] [2023-11-17 16:05:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:30,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:30,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:30,539 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:30,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:05:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:30,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-17 16:05:30,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:30,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:05:30,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-11-17 16:05:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:31,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:05:31,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462784378] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:31,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:31,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 23 [2023-11-17 16:05:31,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608676686] [2023-11-17 16:05:31,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:31,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:05:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:05:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:05:31,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 425 [2023-11-17 16:05:31,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 263 flow. Second operand has 24 states, 24 states have (on average 146.45833333333334) internal successors, (3515), 24 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:31,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:31,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 425 [2023-11-17 16:05:31,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:33,748 INFO L124 PetriNetUnfolderBase]: 14515/18589 cut-off events. [2023-11-17 16:05:33,748 INFO L125 PetriNetUnfolderBase]: For 15993/15993 co-relation queries the response was YES. [2023-11-17 16:05:33,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53696 conditions, 18589 events. 14515/18589 cut-off events. For 15993/15993 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 90042 event pairs, 1249 based on Foata normal form. 2/18581 useless extension candidates. Maximal degree in co-relation 53662. Up to 14228 conditions per place. [2023-11-17 16:05:33,914 INFO L140 encePairwiseOnDemand]: 412/425 looper letters, 260 selfloop transitions, 158 changer transitions 21/443 dead transitions. [2023-11-17 16:05:33,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 443 transitions, 2460 flow [2023-11-17 16:05:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-17 16:05:33,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-17 16:05:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4687 transitions. [2023-11-17 16:05:33,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3676078431372549 [2023-11-17 16:05:33,928 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4687 transitions. [2023-11-17 16:05:33,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4687 transitions. [2023-11-17 16:05:33,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:33,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4687 transitions. [2023-11-17 16:05:33,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 156.23333333333332) internal successors, (4687), 30 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:33,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 425.0) internal successors, (13175), 31 states have internal predecessors, (13175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:33,965 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 425.0) internal successors, (13175), 31 states have internal predecessors, (13175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:33,965 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 263 flow. Second operand 30 states and 4687 transitions. [2023-11-17 16:05:33,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 443 transitions, 2460 flow [2023-11-17 16:05:33,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 443 transitions, 2423 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-17 16:05:34,005 INFO L231 Difference]: Finished difference. Result has 97 places, 208 transitions, 1461 flow [2023-11-17 16:05:34,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1461, PETRI_PLACES=97, PETRI_TRANSITIONS=208} [2023-11-17 16:05:34,006 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2023-11-17 16:05:34,006 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 208 transitions, 1461 flow [2023-11-17 16:05:34,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 146.45833333333334) internal successors, (3515), 24 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:34,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:34,008 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:34,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:34,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:34,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:34,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash -929006407, now seen corresponding path program 2 times [2023-11-17 16:05:34,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:34,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735297650] [2023-11-17 16:05:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735297650] [2023-11-17 16:05:35,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735297650] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172934024] [2023-11-17 16:05:35,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:05:35,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:35,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:35,277 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:35,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:05:35,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:05:35,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:35,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 16:05:35,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:35,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:05:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:35,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:05:35,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172934024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:35,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:35,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 5] total 23 [2023-11-17 16:05:35,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987325233] [2023-11-17 16:05:35,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:35,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:05:35,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:35,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:05:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:05:35,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 425 [2023-11-17 16:05:35,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 208 transitions, 1461 flow. Second operand has 24 states, 24 states have (on average 146.45833333333334) internal successors, (3515), 24 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:35,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:35,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 425 [2023-11-17 16:05:35,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:39,879 INFO L124 PetriNetUnfolderBase]: 22550/29266 cut-off events. [2023-11-17 16:05:39,880 INFO L125 PetriNetUnfolderBase]: For 84911/84911 co-relation queries the response was YES. [2023-11-17 16:05:40,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109020 conditions, 29266 events. 22550/29266 cut-off events. For 84911/84911 co-relation queries the response was YES. Maximal size of possible extension queue 1403. Compared 155918 event pairs, 1827 based on Foata normal form. 3/29267 useless extension candidates. Maximal degree in co-relation 108972. Up to 19657 conditions per place. [2023-11-17 16:05:40,187 INFO L140 encePairwiseOnDemand]: 410/425 looper letters, 349 selfloop transitions, 315 changer transitions 21/689 dead transitions. [2023-11-17 16:05:40,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 689 transitions, 5431 flow [2023-11-17 16:05:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 16:05:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 16:05:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4285 transitions. [2023-11-17 16:05:40,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37342047930283223 [2023-11-17 16:05:40,201 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4285 transitions. [2023-11-17 16:05:40,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4285 transitions. [2023-11-17 16:05:40,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:40,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4285 transitions. [2023-11-17 16:05:40,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 158.7037037037037) internal successors, (4285), 27 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:40,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 425.0) internal successors, (11900), 28 states have internal predecessors, (11900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:40,326 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 425.0) internal successors, (11900), 28 states have internal predecessors, (11900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:40,327 INFO L175 Difference]: Start difference. First operand has 97 places, 208 transitions, 1461 flow. Second operand 27 states and 4285 transitions. [2023-11-17 16:05:40,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 689 transitions, 5431 flow [2023-11-17 16:05:40,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 689 transitions, 5256 flow, removed 82 selfloop flow, removed 4 redundant places. [2023-11-17 16:05:40,535 INFO L231 Difference]: Finished difference. Result has 133 places, 443 transitions, 4248 flow [2023-11-17 16:05:40,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4248, PETRI_PLACES=133, PETRI_TRANSITIONS=443} [2023-11-17 16:05:40,536 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2023-11-17 16:05:40,537 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 443 transitions, 4248 flow [2023-11-17 16:05:40,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 146.45833333333334) internal successors, (3515), 24 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:40,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:40,538 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:40,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:40,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:40,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:40,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:40,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1632503153, now seen corresponding path program 3 times [2023-11-17 16:05:40,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:40,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732562476] [2023-11-17 16:05:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:40,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:41,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:41,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732562476] [2023-11-17 16:05:41,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732562476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:41,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339473822] [2023-11-17 16:05:41,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:05:41,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:41,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:41,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:41,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:05:41,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:05:41,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:41,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 16:05:41,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:42,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:05:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:42,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:05:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339473822] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:42,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:42,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 5] total 23 [2023-11-17 16:05:42,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700111527] [2023-11-17 16:05:42,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:05:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:05:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:05:42,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 425 [2023-11-17 16:05:42,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 443 transitions, 4248 flow. Second operand has 24 states, 24 states have (on average 146.45833333333334) internal successors, (3515), 24 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:42,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:42,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 425 [2023-11-17 16:05:42,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:48,811 INFO L124 PetriNetUnfolderBase]: 34968/45638 cut-off events. [2023-11-17 16:05:48,811 INFO L125 PetriNetUnfolderBase]: For 244886/244920 co-relation queries the response was YES. [2023-11-17 16:05:49,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204903 conditions, 45638 events. 34968/45638 cut-off events. For 244886/244920 co-relation queries the response was YES. Maximal size of possible extension queue 2156. Compared 259686 event pairs, 2911 based on Foata normal form. 31/45659 useless extension candidates. Maximal degree in co-relation 204840. Up to 31861 conditions per place. [2023-11-17 16:05:49,424 INFO L140 encePairwiseOnDemand]: 411/425 looper letters, 574 selfloop transitions, 492 changer transitions 9/1079 dead transitions. [2023-11-17 16:05:49,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 1079 transitions, 11681 flow [2023-11-17 16:05:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-17 16:05:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-17 16:05:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4751 transitions. [2023-11-17 16:05:49,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3726274509803922 [2023-11-17 16:05:49,434 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4751 transitions. [2023-11-17 16:05:49,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4751 transitions. [2023-11-17 16:05:49,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:49,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4751 transitions. [2023-11-17 16:05:49,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 158.36666666666667) internal successors, (4751), 30 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:49,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 425.0) internal successors, (13175), 31 states have internal predecessors, (13175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:49,461 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 425.0) internal successors, (13175), 31 states have internal predecessors, (13175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:49,461 INFO L175 Difference]: Start difference. First operand has 133 places, 443 transitions, 4248 flow. Second operand 30 states and 4751 transitions. [2023-11-17 16:05:49,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 1079 transitions, 11681 flow [2023-11-17 16:05:53,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1079 transitions, 10400 flow, removed 632 selfloop flow, removed 5 redundant places. [2023-11-17 16:05:53,808 INFO L231 Difference]: Finished difference. Result has 171 places, 823 transitions, 9745 flow [2023-11-17 16:05:53,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9745, PETRI_PLACES=171, PETRI_TRANSITIONS=823} [2023-11-17 16:05:53,810 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2023-11-17 16:05:53,810 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 823 transitions, 9745 flow [2023-11-17 16:05:53,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 146.45833333333334) internal successors, (3515), 24 states have internal predecessors, (3515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:53,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:53,811 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:05:53,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:54,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:54,017 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:05:54,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash -100886875, now seen corresponding path program 4 times [2023-11-17 16:05:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:54,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681440930] [2023-11-17 16:05:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681440930] [2023-11-17 16:05:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681440930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736612702] [2023-11-17 16:05:54,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:05:54,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:54,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:54,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:54,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:05:54,931 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:05:54,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:54,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-17 16:05:54,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:54,951 INFO L378 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 452 treesize of output 444 [2023-11-17 16:05:55,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 16:05:55,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:05:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:55,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:55,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 27 [2023-11-17 16:05:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:55,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736612702] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:55,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:55,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2023-11-17 16:05:55,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794274088] [2023-11-17 16:05:55,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:55,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-17 16:05:55,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:55,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-17 16:05:55,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=779, Unknown=1, NotChecked=0, Total=930 [2023-11-17 16:05:55,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 425 [2023-11-17 16:05:55,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 823 transitions, 9745 flow. Second operand has 31 states, 31 states have (on average 137.70967741935485) internal successors, (4269), 31 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:55,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:55,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 425 [2023-11-17 16:05:55,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:07,026 INFO L124 PetriNetUnfolderBase]: 45212/59510 cut-off events. [2023-11-17 16:06:07,027 INFO L125 PetriNetUnfolderBase]: For 361308/361358 co-relation queries the response was YES. [2023-11-17 16:06:07,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284861 conditions, 59510 events. 45212/59510 cut-off events. For 361308/361358 co-relation queries the response was YES. Maximal size of possible extension queue 2918. Compared 359046 event pairs, 5376 based on Foata normal form. 734/60234 useless extension candidates. Maximal degree in co-relation 264832. Up to 42881 conditions per place. [2023-11-17 16:06:07,797 INFO L140 encePairwiseOnDemand]: 411/425 looper letters, 873 selfloop transitions, 473 changer transitions 53/1403 dead transitions. [2023-11-17 16:06:07,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 1403 transitions, 17198 flow [2023-11-17 16:06:07,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:06:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:06:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4978 transitions. [2023-11-17 16:06:07,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3549376114081996 [2023-11-17 16:06:07,812 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4978 transitions. [2023-11-17 16:06:07,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4978 transitions. [2023-11-17 16:06:07,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:07,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4978 transitions. [2023-11-17 16:06:07,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 150.84848484848484) internal successors, (4978), 33 states have internal predecessors, (4978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:07,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 425.0) internal successors, (14450), 34 states have internal predecessors, (14450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:07,831 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 425.0) internal successors, (14450), 34 states have internal predecessors, (14450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:07,831 INFO L175 Difference]: Start difference. First operand has 171 places, 823 transitions, 9745 flow. Second operand 33 states and 4978 transitions. [2023-11-17 16:06:07,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 1403 transitions, 17198 flow [2023-11-17 16:06:17,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 1403 transitions, 15295 flow, removed 943 selfloop flow, removed 4 redundant places. [2023-11-17 16:06:17,356 INFO L231 Difference]: Finished difference. Result has 216 places, 1056 transitions, 13022 flow [2023-11-17 16:06:17,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=8430, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=13022, PETRI_PLACES=216, PETRI_TRANSITIONS=1056} [2023-11-17 16:06:17,357 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 173 predicate places. [2023-11-17 16:06:17,357 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 1056 transitions, 13022 flow [2023-11-17 16:06:17,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 137.70967741935485) internal successors, (4269), 31 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:17,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:17,358 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:06:17,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:06:17,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:17,564 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:17,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:17,564 INFO L85 PathProgramCache]: Analyzing trace with hash 831325488, now seen corresponding path program 1 times [2023-11-17 16:06:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:17,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735129141] [2023-11-17 16:06:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:17,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:06:17,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735129141] [2023-11-17 16:06:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735129141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:17,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501960503] [2023-11-17 16:06:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:17,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:17,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:17,932 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:06:17,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 16:06:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:18,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-17 16:06:18,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:18,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-11-17 16:06:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:06:18,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:06:18,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501960503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:06:18,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:06:18,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 17 [2023-11-17 16:06:18,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124080256] [2023-11-17 16:06:18,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:06:18,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:06:18,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:18,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:06:18,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:06:18,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 425 [2023-11-17 16:06:18,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 1056 transitions, 13022 flow. Second operand has 18 states, 18 states have (on average 161.5) internal successors, (2907), 18 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:18,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:18,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 425 [2023-11-17 16:06:18,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:31,509 INFO L124 PetriNetUnfolderBase]: 49248/64720 cut-off events. [2023-11-17 16:06:31,510 INFO L125 PetriNetUnfolderBase]: For 371805/371857 co-relation queries the response was YES. [2023-11-17 16:06:32,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327397 conditions, 64720 events. 49248/64720 cut-off events. For 371805/371857 co-relation queries the response was YES. Maximal size of possible extension queue 3145. Compared 392268 event pairs, 7450 based on Foata normal form. 37/64737 useless extension candidates. Maximal degree in co-relation 318444. Up to 53724 conditions per place. [2023-11-17 16:06:32,777 INFO L140 encePairwiseOnDemand]: 411/425 looper letters, 966 selfloop transitions, 522 changer transitions 8/1500 dead transitions. [2023-11-17 16:06:32,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 1500 transitions, 19869 flow [2023-11-17 16:06:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 16:06:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 16:06:32,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4782 transitions. [2023-11-17 16:06:32,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4018487394957983 [2023-11-17 16:06:32,905 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4782 transitions. [2023-11-17 16:06:32,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4782 transitions. [2023-11-17 16:06:32,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:32,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4782 transitions. [2023-11-17 16:06:32,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 170.78571428571428) internal successors, (4782), 28 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:32,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 425.0) internal successors, (12325), 29 states have internal predecessors, (12325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:32,917 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 425.0) internal successors, (12325), 29 states have internal predecessors, (12325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:32,918 INFO L175 Difference]: Start difference. First operand has 216 places, 1056 transitions, 13022 flow. Second operand 28 states and 4782 transitions. [2023-11-17 16:06:32,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 1500 transitions, 19869 flow [2023-11-17 16:06:44,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 1500 transitions, 19298 flow, removed 263 selfloop flow, removed 6 redundant places. [2023-11-17 16:06:44,782 INFO L231 Difference]: Finished difference. Result has 245 places, 1288 transitions, 17335 flow [2023-11-17 16:06:44,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=12473, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=17335, PETRI_PLACES=245, PETRI_TRANSITIONS=1288} [2023-11-17 16:06:44,783 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 202 predicate places. [2023-11-17 16:06:44,783 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 1288 transitions, 17335 flow [2023-11-17 16:06:44,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 161.5) internal successors, (2907), 18 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:44,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:44,784 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:06:44,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 16:06:44,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 16:06:44,991 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:06:44,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:44,991 INFO L85 PathProgramCache]: Analyzing trace with hash 614365445, now seen corresponding path program 5 times [2023-11-17 16:06:44,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:44,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528525350] [2023-11-17 16:06:44,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:44,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:06:45,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:45,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528525350] [2023-11-17 16:06:45,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528525350] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643704417] [2023-11-17 16:06:45,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:06:45,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:45,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:45,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:06:45,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 16:06:45,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:06:45,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:06:45,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 16:06:45,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:45,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 16:06:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:06:45,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 16:06:45,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643704417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:06:45,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:06:45,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 17 [2023-11-17 16:06:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114467172] [2023-11-17 16:06:45,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:06:45,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:06:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:45,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:06:45,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:06:45,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 425 [2023-11-17 16:06:45,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 1288 transitions, 17335 flow. Second operand has 18 states, 18 states have (on average 161.5) internal successors, (2907), 18 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:45,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:45,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 425 [2023-11-17 16:06:45,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:03,339 INFO L124 PetriNetUnfolderBase]: 56055/73724 cut-off events. [2023-11-17 16:07:03,340 INFO L125 PetriNetUnfolderBase]: For 476415/476467 co-relation queries the response was YES. [2023-11-17 16:07:05,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395240 conditions, 73724 events. 56055/73724 cut-off events. For 476415/476467 co-relation queries the response was YES. Maximal size of possible extension queue 3612. Compared 454746 event pairs, 7518 based on Foata normal form. 39/73743 useless extension candidates. Maximal degree in co-relation 387529. Up to 57435 conditions per place. [2023-11-17 16:07:05,398 INFO L140 encePairwiseOnDemand]: 411/425 looper letters, 1095 selfloop transitions, 709 changer transitions 8/1816 dead transitions. [2023-11-17 16:07:05,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1816 transitions, 26261 flow [2023-11-17 16:07:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 16:07:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 16:07:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4805 transitions. [2023-11-17 16:07:05,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403781512605042 [2023-11-17 16:07:05,404 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4805 transitions. [2023-11-17 16:07:05,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4805 transitions. [2023-11-17 16:07:05,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:07:05,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4805 transitions. [2023-11-17 16:07:05,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 171.60714285714286) internal successors, (4805), 28 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:05,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 425.0) internal successors, (12325), 29 states have internal predecessors, (12325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:05,421 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 425.0) internal successors, (12325), 29 states have internal predecessors, (12325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:05,421 INFO L175 Difference]: Start difference. First operand has 245 places, 1288 transitions, 17335 flow. Second operand 28 states and 4805 transitions. [2023-11-17 16:07:05,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1816 transitions, 26261 flow [2023-11-17 16:07:25,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1816 transitions, 24776 flow, removed 464 selfloop flow, removed 6 redundant places. [2023-11-17 16:07:25,289 INFO L231 Difference]: Finished difference. Result has 277 places, 1578 transitions, 22443 flow [2023-11-17 16:07:25,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=425, PETRI_DIFFERENCE_MINUEND_FLOW=15951, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=465, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=742, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=22443, PETRI_PLACES=277, PETRI_TRANSITIONS=1578} [2023-11-17 16:07:25,290 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2023-11-17 16:07:25,290 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 1578 transitions, 22443 flow [2023-11-17 16:07:25,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 161.5) internal successors, (2907), 18 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:25,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:25,291 INFO L208 CegarLoopForPetriNet]: 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] [2023-11-17 16:07:25,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 16:07:25,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:07:25,492 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 16:07:25,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:25,492 INFO L85 PathProgramCache]: Analyzing trace with hash -128833260, now seen corresponding path program 2 times [2023-11-17 16:07:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:25,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032275676] [2023-11-17 16:07:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:25,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:26,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:26,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032275676] [2023-11-17 16:07:26,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032275676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:07:26,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785574718] [2023-11-17 16:07:26,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:07:26,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:07:26,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:07:26,285 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:07:26,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 16:07:26,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:07:26,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:07:26,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-17 16:07:26,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:07:26,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:07:26,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-17 16:07:26,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-11-17 16:07:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:26,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:07:27,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 27 [2023-11-17 16:07:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:27,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785574718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:07:27,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:07:27,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 29 [2023-11-17 16:07:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145086242] [2023-11-17 16:07:27,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:07:27,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-17 16:07:27,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-17 16:07:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=800, Unknown=1, NotChecked=0, Total=930 [2023-11-17 16:07:27,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 425 [2023-11-17 16:07:27,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 1578 transitions, 22443 flow. Second operand has 31 states, 31 states have (on average 137.70967741935485) internal successors, (4269), 31 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:27,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:27,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 425 [2023-11-17 16:07:27,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand