/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -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 12:08:11,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:08:11,345 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 12:08:11,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:08:11,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:08:11,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:08:11,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:08:11,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:08:11,379 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:08:11,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:08:11,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:08:11,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:08:11,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:08:11,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:08:11,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:08:11,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:08:11,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:08:11,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:08:11,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:08:11,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:08:11,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:08:11,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:08:11,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:08:11,389 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:08:11,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:08:11,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:08:11,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:08:11,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:08:11,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:08:11,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:08:11,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:08:11,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:08:11,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:08:11,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:08:11,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:08:11,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:08:11,658 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:08:11,658 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:08:11,660 INFO L431 ainManager$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 12:08:12,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:08:13,085 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:08:13,086 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2023-11-17 12:08:13,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f230e075e/bfe61c06a85c4d53844443f70488df64/FLAG98f0102b2 [2023-11-17 12:08:13,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f230e075e/bfe61c06a85c4d53844443f70488df64 [2023-11-17 12:08:13,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:08:13,109 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:08:13,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:08:13,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:08:13,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:08:13,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b0e665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13, skipping insertion in model container [2023-11-17 12:08:13,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,153 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:08:13,298 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 12:08:13,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:08:13,328 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:08:13,351 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 12:08:13,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:08:13,365 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:08:13,365 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:08:13,371 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:08:13,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13 WrapperNode [2023-11-17 12:08:13,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:08:13,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:08:13,372 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:08:13,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:08:13,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,417 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 315 [2023-11-17 12:08:13,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:08:13,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:08:13,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:08:13,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:08:13,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,466 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:08:13,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:08:13,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:08:13,472 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:08:13,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (1/1) ... [2023-11-17 12:08:13,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:08:13,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:13,532 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 12:08:13,540 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 12:08:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:08:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:08:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:08:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:08:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:08:13,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:08:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:08:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:08:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:08:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:08:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:08:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:08:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:08:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:08:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:08:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:08:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:08:13,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:08:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:08:13,562 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 12:08:13,665 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:08:13,667 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:08:14,066 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:08:14,465 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:08:14,465 INFO L307 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-17 12:08:14,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:08:14 BoogieIcfgContainer [2023-11-17 12:08:14,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:08:14,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:08:14,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:08:14,473 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:08:14,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:08:13" (1/3) ... [2023-11-17 12:08:14,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52367ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:08:14, skipping insertion in model container [2023-11-17 12:08:14,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:08:13" (2/3) ... [2023-11-17 12:08:14,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52367ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:08:14, skipping insertion in model container [2023-11-17 12:08:14,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:08:14" (3/3) ... [2023-11-17 12:08:14,476 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2023-11-17 12:08:14,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:08:14,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:08:14,495 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:08:14,587 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 12:08:14,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 57 transitions, 142 flow [2023-11-17 12:08:14,665 INFO L124 PetriNetUnfolderBase]: 9/53 cut-off events. [2023-11-17 12:08:14,665 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:08:14,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 53 events. 9/53 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-17 12:08:14,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 57 transitions, 142 flow [2023-11-17 12:08:14,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 128 flow [2023-11-17 12:08:14,679 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:08:14,691 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 52 transitions, 128 flow [2023-11-17 12:08:14,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 52 transitions, 128 flow [2023-11-17 12:08:14,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 128 flow [2023-11-17 12:08:14,708 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2023-11-17 12:08:14,708 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:08:14,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 52 events. 9/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-17 12:08:14,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 1216 [2023-11-17 12:08:15,427 INFO L134 LiptonReduction]: Checked pairs total: 1383 [2023-11-17 12:08:15,427 INFO L136 LiptonReduction]: Total number of compositions: 25 [2023-11-17 12:08:15,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:08:15,459 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;@1b37ee01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:08:15,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 12:08:15,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:08:15,479 INFO L124 PetriNetUnfolderBase]: 5/34 cut-off events. [2023-11-17 12:08:15,479 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:08:15,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:15,479 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 12:08:15,480 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 12:08:15,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:15,485 INFO L85 PathProgramCache]: Analyzing trace with hash 944357254, now seen corresponding path program 1 times [2023-11-17 12:08:15,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:15,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065523738] [2023-11-17 12:08:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:15,891 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 12:08:15,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:15,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065523738] [2023-11-17 12:08:15,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065523738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:08:15,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:08:15,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:08:15,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319296415] [2023-11-17 12:08:15,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:08:15,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:08:15,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:08:15,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:08:15,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:15,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 12:08:15,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:15,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:15,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:16,694 INFO L124 PetriNetUnfolderBase]: 4382/5585 cut-off events. [2023-11-17 12:08:16,695 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2023-11-17 12:08:16,706 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 294. Compared 24000 event pairs, 656 based on Foata normal form. 1/3736 useless extension candidates. Maximal degree in co-relation 9316. Up to 4602 conditions per place. [2023-11-17 12:08:16,742 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 51 selfloop transitions, 5 changer transitions 1/61 dead transitions. [2023-11-17 12:08:16,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 61 transitions, 281 flow [2023-11-17 12:08:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:08:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:08:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2023-11-17 12:08:16,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3943089430894309 [2023-11-17 12:08:16,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2023-11-17 12:08:16,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2023-11-17 12:08:16,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:16,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2023-11-17 12:08:16,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 12:08:16,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 12:08:16,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 12:08:16,764 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 94 flow. Second operand 3 states and 97 transitions. [2023-11-17 12:08:16,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 61 transitions, 281 flow [2023-11-17 12:08:16,775 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 12:08:16,778 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 111 flow [2023-11-17 12:08:16,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, 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 12:08:16,785 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-11-17 12:08:16,785 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 111 flow [2023-11-17 12:08:16,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 12:08:16,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:16,786 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 12:08:16,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:08:16,787 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 12:08:16,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:16,787 INFO L85 PathProgramCache]: Analyzing trace with hash 681122187, now seen corresponding path program 1 times [2023-11-17 12:08:16,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247397829] [2023-11-17 12:08:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:16,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:17,089 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 12:08:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247397829] [2023-11-17 12:08:17,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247397829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:08:17,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:08:17,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:08:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634064630] [2023-11-17 12:08:17,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:08:17,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:08:17,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:08:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:08:17,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:17,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 12:08:17,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:17,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:17,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:17,800 INFO L124 PetriNetUnfolderBase]: 5147/6783 cut-off events. [2023-11-17 12:08:17,800 INFO L125 PetriNetUnfolderBase]: For 993/993 co-relation queries the response was YES. [2023-11-17 12:08:17,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15325 conditions, 6783 events. 5147/6783 cut-off events. For 993/993 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 31917 event pairs, 3005 based on Foata normal form. 1/4760 useless extension candidates. Maximal degree in co-relation 2011. Up to 5237 conditions per place. [2023-11-17 12:08:17,850 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 34 selfloop transitions, 2 changer transitions 26/66 dead transitions. [2023-11-17 12:08:17,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 66 transitions, 310 flow [2023-11-17 12:08:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:08:17,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:08:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2023-11-17 12:08:17,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3384146341463415 [2023-11-17 12:08:17,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 111 transitions. [2023-11-17 12:08:17,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 111 transitions. [2023-11-17 12:08:17,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:17,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 111 transitions. [2023-11-17 12:08:17,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 12:08:17,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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 12:08:17,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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 12:08:17,860 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 111 flow. Second operand 4 states and 111 transitions. [2023-11-17 12:08:17,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 66 transitions, 310 flow [2023-11-17 12:08:17,863 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 12:08:17,865 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 124 flow [2023-11-17 12:08:17,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, 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 12:08:17,866 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-11-17 12:08:17,867 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 124 flow [2023-11-17 12:08:17,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 12:08:17,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:17,871 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 12:08:17,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:08:17,876 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 12:08:17,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -426387607, now seen corresponding path program 1 times [2023-11-17 12:08:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868163266] [2023-11-17 12:08:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:18,053 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 12:08:18,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:18,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868163266] [2023-11-17 12:08:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868163266] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719154249] [2023-11-17 12:08:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:18,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:18,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:18,061 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 12:08:18,073 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 12:08:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:18,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 12:08:18,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:18,303 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 12:08:18,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:18,357 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 12:08:18,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719154249] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:18,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:18,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 12:08:18,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670778535] [2023-11-17 12:08:18,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:18,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:08:18,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:18,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:08:18,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:08:18,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:18,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 124 flow. Second operand has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 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 12:08:18,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:18,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:18,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:19,108 INFO L124 PetriNetUnfolderBase]: 5147/6785 cut-off events. [2023-11-17 12:08:19,108 INFO L125 PetriNetUnfolderBase]: For 2107/2107 co-relation queries the response was YES. [2023-11-17 12:08:19,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15755 conditions, 6785 events. 5147/6785 cut-off events. For 2107/2107 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 32108 event pairs, 3005 based on Foata normal form. 297/5918 useless extension candidates. Maximal degree in co-relation 15742. Up to 5236 conditions per place. [2023-11-17 12:08:19,178 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 59 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2023-11-17 12:08:19,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 334 flow [2023-11-17 12:08:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:08:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:08:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2023-11-17 12:08:19,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2804878048780488 [2023-11-17 12:08:19,182 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 138 transitions. [2023-11-17 12:08:19,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 138 transitions. [2023-11-17 12:08:19,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:19,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 138 transitions. [2023-11-17 12:08:19,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 12:08:19,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 12:08:19,187 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 12:08:19,187 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 124 flow. Second operand 6 states and 138 transitions. [2023-11-17 12:08:19,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 334 flow [2023-11-17 12:08:19,192 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 12:08:19,194 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 159 flow [2023-11-17 12:08:19,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, 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 12:08:19,195 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-11-17 12:08:19,195 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 159 flow [2023-11-17 12:08:19,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 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 12:08:19,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:19,196 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 12:08:19,206 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 12:08:19,402 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 12:08:19,403 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 12:08:19,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:19,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1506392383, now seen corresponding path program 1 times [2023-11-17 12:08:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:19,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315586161] [2023-11-17 12:08:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:19,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:19,556 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 12:08:19,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:19,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315586161] [2023-11-17 12:08:19,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315586161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:19,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879370781] [2023-11-17 12:08:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:19,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:19,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:19,559 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 12:08:19,577 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 12:08:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:19,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 12:08:19,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:19,789 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 12:08:19,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:19,840 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 12:08:19,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879370781] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:19,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:19,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 12:08:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973567025] [2023-11-17 12:08:19,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:19,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:08:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:08:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:08:19,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:19,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 159 flow. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 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 12:08:19,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:19,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:19,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:20,476 INFO L124 PetriNetUnfolderBase]: 4241/5551 cut-off events. [2023-11-17 12:08:20,477 INFO L125 PetriNetUnfolderBase]: For 3308/3308 co-relation queries the response was YES. [2023-11-17 12:08:20,486 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 299. Compared 24871 event pairs, 2379 based on Foata normal form. 0/4697 useless extension candidates. Maximal degree in co-relation 13453. Up to 5236 conditions per place. [2023-11-17 12:08:20,516 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 33 selfloop transitions, 4 changer transitions 20/61 dead transitions. [2023-11-17 12:08:20,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 313 flow [2023-11-17 12:08:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:08:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:08:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2023-11-17 12:08:20,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2703252032520325 [2023-11-17 12:08:20,518 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 133 transitions. [2023-11-17 12:08:20,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 133 transitions. [2023-11-17 12:08:20,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:20,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 133 transitions. [2023-11-17 12:08:20,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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 12:08:20,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 12:08:20,520 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 12:08:20,520 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 159 flow. Second operand 6 states and 133 transitions. [2023-11-17 12:08:20,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 313 flow [2023-11-17 12:08:20,523 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 12:08:20,524 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 142 flow [2023-11-17 12:08:20,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, 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 12:08:20,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-17 12:08:20,530 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 142 flow [2023-11-17 12:08:20,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 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 12:08:20,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:20,531 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 12:08:20,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 12:08:20,739 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 12:08:20,740 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 12:08:20,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash -353241227, now seen corresponding path program 2 times [2023-11-17 12:08:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:20,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473932124] [2023-11-17 12:08:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:20,922 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 12:08:20,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:20,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473932124] [2023-11-17 12:08:20,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473932124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:08:20,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:08:20,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:08:20,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457006157] [2023-11-17 12:08:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:08:20,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:08:20,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:08:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:08:20,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:20,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 12:08:20,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:20,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:20,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:22,195 INFO L124 PetriNetUnfolderBase]: 10059/12712 cut-off events. [2023-11-17 12:08:22,195 INFO L125 PetriNetUnfolderBase]: For 4256/4256 co-relation queries the response was YES. [2023-11-17 12:08:22,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32352 conditions, 12712 events. 10059/12712 cut-off events. For 4256/4256 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 57369 event pairs, 1593 based on Foata normal form. 1/12655 useless extension candidates. Maximal degree in co-relation 32322. Up to 5008 conditions per place. [2023-11-17 12:08:22,310 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 85 selfloop transitions, 8 changer transitions 1/98 dead transitions. [2023-11-17 12:08:22,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 510 flow [2023-11-17 12:08:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:08:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:08:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2023-11-17 12:08:22,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2023-11-17 12:08:22,312 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 133 transitions. [2023-11-17 12:08:22,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 133 transitions. [2023-11-17 12:08:22,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:22,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 133 transitions. [2023-11-17 12:08:22,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 12:08:22,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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 12:08:22,314 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 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 12:08:22,314 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 142 flow. Second operand 4 states and 133 transitions. [2023-11-17 12:08:22,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 510 flow [2023-11-17 12:08:22,316 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 12:08:22,318 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 206 flow [2023-11-17 12:08:22,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, 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 12:08:22,320 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-17 12:08:22,320 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 206 flow [2023-11-17 12:08:22,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 12:08:22,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:22,321 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 12:08:22,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:08:22,321 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 12:08:22,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash -26362172, now seen corresponding path program 1 times [2023-11-17 12:08:22,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:22,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656442456] [2023-11-17 12:08:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:22,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:22,535 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 12:08:22,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:22,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656442456] [2023-11-17 12:08:22,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656442456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325924502] [2023-11-17 12:08:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:22,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:22,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:22,537 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 12:08:22,541 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 12:08:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:22,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 12:08:22,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:08:22,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:08:22,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325924502] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:22,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:08:22,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 11 [2023-11-17 12:08:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496921043] [2023-11-17 12:08:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:08:22,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:08:22,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:08:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:08:22,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:22,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 12:08:22,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:22,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:22,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:24,168 INFO L124 PetriNetUnfolderBase]: 10759/13618 cut-off events. [2023-11-17 12:08:24,168 INFO L125 PetriNetUnfolderBase]: For 15275/15275 co-relation queries the response was YES. [2023-11-17 12:08:24,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41184 conditions, 13618 events. 10759/13618 cut-off events. For 15275/15275 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 61163 event pairs, 1971 based on Foata normal form. 1/13585 useless extension candidates. Maximal degree in co-relation 41155. Up to 12161 conditions per place. [2023-11-17 12:08:24,295 INFO L140 encePairwiseOnDemand]: 76/82 looper letters, 61 selfloop transitions, 8 changer transitions 5/78 dead transitions. [2023-11-17 12:08:24,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 469 flow [2023-11-17 12:08:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:08:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:08:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2023-11-17 12:08:24,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2764227642276423 [2023-11-17 12:08:24,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 136 transitions. [2023-11-17 12:08:24,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 136 transitions. [2023-11-17 12:08:24,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:24,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 136 transitions. [2023-11-17 12:08:24,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 12:08:24,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 12:08:24,298 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 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 12:08:24,298 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 206 flow. Second operand 6 states and 136 transitions. [2023-11-17 12:08:24,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 469 flow [2023-11-17 12:08:24,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 433 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-11-17 12:08:24,352 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 237 flow [2023-11-17 12:08:24,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-11-17 12:08:24,353 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2023-11-17 12:08:24,353 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 237 flow [2023-11-17 12:08:24,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 12:08:24,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:24,354 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 12:08:24,365 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 12:08:24,561 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 12:08:24,562 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 12:08:24,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2135166213, now seen corresponding path program 1 times [2023-11-17 12:08:24,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:24,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876883581] [2023-11-17 12:08:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:24,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:26,084 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 12:08:26,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:26,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876883581] [2023-11-17 12:08:26,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876883581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:26,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804963401] [2023-11-17 12:08:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:26,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:26,087 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 12:08:26,107 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 12:08:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:26,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 12:08:26,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:26,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:08:26,484 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 20 treesize of output 15 [2023-11-17 12:08:26,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:08:26,609 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 21 treesize of output 15 [2023-11-17 12:08:26,779 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 12:08:26,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:26,989 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 12:08:27,111 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 12:08:27,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804963401] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:27,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 26 [2023-11-17 12:08:27,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826934328] [2023-11-17 12:08:27,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:27,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-17 12:08:27,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:27,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-17 12:08:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=665, Unknown=1, NotChecked=0, Total=756 [2023-11-17 12:08:27,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:27,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 237 flow. Second operand has 28 states, 28 states have (on average 15.964285714285714) internal successors, (447), 28 states have internal predecessors, (447), 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 12:08:27,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:27,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:27,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:32,974 INFO L124 PetriNetUnfolderBase]: 25481/33051 cut-off events. [2023-11-17 12:08:32,974 INFO L125 PetriNetUnfolderBase]: For 24360/24360 co-relation queries the response was YES. [2023-11-17 12:08:33,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93443 conditions, 33051 events. 25481/33051 cut-off events. For 24360/24360 co-relation queries the response was YES. Maximal size of possible extension queue 1595. Compared 177132 event pairs, 1276 based on Foata normal form. 71/33104 useless extension candidates. Maximal degree in co-relation 78023. Up to 18781 conditions per place. [2023-11-17 12:08:33,222 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 515 selfloop transitions, 355 changer transitions 50/924 dead transitions. [2023-11-17 12:08:33,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 924 transitions, 5044 flow [2023-11-17 12:08:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-17 12:08:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-11-17 12:08:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1565 transitions. [2023-11-17 12:08:33,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34081010452961674 [2023-11-17 12:08:33,229 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1565 transitions. [2023-11-17 12:08:33,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1565 transitions. [2023-11-17 12:08:33,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:33,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1565 transitions. [2023-11-17 12:08:33,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 27.946428571428573) internal successors, (1565), 56 states have internal predecessors, (1565), 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 12:08:33,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 82.0) internal successors, (4674), 57 states have internal predecessors, (4674), 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 12:08:33,245 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 82.0) internal successors, (4674), 57 states have internal predecessors, (4674), 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 12:08:33,245 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 237 flow. Second operand 56 states and 1565 transitions. [2023-11-17 12:08:33,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 924 transitions, 5044 flow [2023-11-17 12:08:33,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 924 transitions, 5039 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:08:33,310 INFO L231 Difference]: Finished difference. Result has 115 places, 419 transitions, 2979 flow [2023-11-17 12:08:33,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=2979, PETRI_PLACES=115, PETRI_TRANSITIONS=419} [2023-11-17 12:08:33,311 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2023-11-17 12:08:33,311 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 419 transitions, 2979 flow [2023-11-17 12:08:33,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 15.964285714285714) internal successors, (447), 28 states have internal predecessors, (447), 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 12:08:33,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:33,312 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 12:08:33,321 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 12:08:33,519 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 12:08:33,519 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 12:08:33,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash -194428542, now seen corresponding path program 1 times [2023-11-17 12:08:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60987513] [2023-11-17 12:08:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:34,601 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 12:08:34,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60987513] [2023-11-17 12:08:34,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60987513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960521821] [2023-11-17 12:08:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:34,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:34,604 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 12:08:34,607 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 12:08:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:34,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 12:08:34,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:34,989 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 12:08:35,101 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 12:08:35,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:35,292 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 12:08:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960521821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:35,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 5] total 23 [2023-11-17 12:08:35,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825418993] [2023-11-17 12:08:35,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:35,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 12:08:35,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 12:08:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2023-11-17 12:08:35,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:35,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 419 transitions, 2979 flow. Second operand has 24 states, 24 states have (on average 16.458333333333332) internal successors, (395), 24 states have internal predecessors, (395), 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 12:08:35,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:35,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:35,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:40,995 INFO L124 PetriNetUnfolderBase]: 30557/39724 cut-off events. [2023-11-17 12:08:40,995 INFO L125 PetriNetUnfolderBase]: For 55417/55417 co-relation queries the response was YES. [2023-11-17 12:08:41,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139138 conditions, 39724 events. 30557/39724 cut-off events. For 55417/55417 co-relation queries the response was YES. Maximal size of possible extension queue 1939. Compared 218738 event pairs, 3125 based on Foata normal form. 4/39710 useless extension candidates. Maximal degree in co-relation 116282. Up to 32803 conditions per place. [2023-11-17 12:08:41,553 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 618 selfloop transitions, 339 changer transitions 24/985 dead transitions. [2023-11-17 12:08:41,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 985 transitions, 7523 flow [2023-11-17 12:08:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-17 12:08:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-17 12:08:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1177 transitions. [2023-11-17 12:08:41,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3053969901401142 [2023-11-17 12:08:41,560 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1177 transitions. [2023-11-17 12:08:41,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1177 transitions. [2023-11-17 12:08:41,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:41,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1177 transitions. [2023-11-17 12:08:41,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 25.04255319148936) internal successors, (1177), 47 states have internal predecessors, (1177), 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 12:08:41,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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 12:08:41,573 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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 12:08:41,573 INFO L175 Difference]: Start difference. First operand has 115 places, 419 transitions, 2979 flow. Second operand 47 states and 1177 transitions. [2023-11-17 12:08:41,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 985 transitions, 7523 flow [2023-11-17 12:08:41,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 985 transitions, 7032 flow, removed 220 selfloop flow, removed 3 redundant places. [2023-11-17 12:08:41,760 INFO L231 Difference]: Finished difference. Result has 174 places, 673 transitions, 5361 flow [2023-11-17 12:08:41,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=2568, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=5361, PETRI_PLACES=174, PETRI_TRANSITIONS=673} [2023-11-17 12:08:41,761 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2023-11-17 12:08:41,761 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 673 transitions, 5361 flow [2023-11-17 12:08:41,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 16.458333333333332) internal successors, (395), 24 states have internal predecessors, (395), 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 12:08:41,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:41,762 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 12:08:41,774 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 12:08:41,974 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 12:08:41,975 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 12:08:41,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash -907064781, now seen corresponding path program 2 times [2023-11-17 12:08:41,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043105433] [2023-11-17 12:08:41,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:43,003 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 12:08:43,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043105433] [2023-11-17 12:08:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043105433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564911941] [2023-11-17 12:08:43,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:08:43,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:43,006 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 12:08:43,008 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 12:08:43,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:08:43,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:08:43,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-17 12:08:43,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:43,347 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 12:08:43,459 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 12:08:43,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:43,627 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 12:08:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564911941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:43,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:43,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 5] total 22 [2023-11-17 12:08:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661501741] [2023-11-17 12:08:43,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:43,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 12:08:43,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 12:08:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-17 12:08:43,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:43,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 673 transitions, 5361 flow. Second operand has 23 states, 23 states have (on average 16.565217391304348) internal successors, (381), 23 states have internal predecessors, (381), 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 12:08:43,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:43,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:43,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:52,090 INFO L124 PetriNetUnfolderBase]: 38268/49877 cut-off events. [2023-11-17 12:08:52,091 INFO L125 PetriNetUnfolderBase]: For 88319/88319 co-relation queries the response was YES. [2023-11-17 12:08:52,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185670 conditions, 49877 events. 38268/49877 cut-off events. For 88319/88319 co-relation queries the response was YES. Maximal size of possible extension queue 2432. Compared 284621 event pairs, 3294 based on Foata normal form. 4/49861 useless extension candidates. Maximal degree in co-relation 184250. Up to 39368 conditions per place. [2023-11-17 12:08:52,713 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 824 selfloop transitions, 503 changer transitions 26/1357 dead transitions. [2023-11-17 12:08:52,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1357 transitions, 11677 flow [2023-11-17 12:08:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-17 12:08:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-17 12:08:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 1236 transitions. [2023-11-17 12:08:52,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32070576024909186 [2023-11-17 12:08:52,718 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 1236 transitions. [2023-11-17 12:08:52,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 1236 transitions. [2023-11-17 12:08:52,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:52,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 1236 transitions. [2023-11-17 12:08:52,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 26.29787234042553) internal successors, (1236), 47 states have internal predecessors, (1236), 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 12:08:52,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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 12:08:52,727 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 82.0) internal successors, (3936), 48 states have internal predecessors, (3936), 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 12:08:52,727 INFO L175 Difference]: Start difference. First operand has 174 places, 673 transitions, 5361 flow. Second operand 47 states and 1236 transitions. [2023-11-17 12:08:52,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1357 transitions, 11677 flow [2023-11-17 12:08:53,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 1357 transitions, 11276 flow, removed 183 selfloop flow, removed 9 redundant places. [2023-11-17 12:08:53,270 INFO L231 Difference]: Finished difference. Result has 230 places, 994 transitions, 9142 flow [2023-11-17 12:08:53,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=4960, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=9142, PETRI_PLACES=230, PETRI_TRANSITIONS=994} [2023-11-17 12:08:53,272 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2023-11-17 12:08:53,272 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 994 transitions, 9142 flow [2023-11-17 12:08:53,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 16.565217391304348) internal successors, (381), 23 states have internal predecessors, (381), 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 12:08:53,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:53,272 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 12:08:53,284 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 12:08:53,478 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 12:08:53,479 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 12:08:53,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1806647333, now seen corresponding path program 3 times [2023-11-17 12:08:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:53,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983801674] [2023-11-17 12:08:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:54,362 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 12:08:54,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:54,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983801674] [2023-11-17 12:08:54,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983801674] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:54,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232670450] [2023-11-17 12:08:54,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:08:54,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:54,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:54,365 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 12:08:54,387 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 12:08:54,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:08:54,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:08:54,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-17 12:08:54,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:54,727 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 12:08:54,812 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 12:08:54,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:54,988 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 12:08:54,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232670450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:54,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:54,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 5] total 22 [2023-11-17 12:08:54,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012633779] [2023-11-17 12:08:54,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:54,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 12:08:54,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:54,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 12:08:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-11-17 12:08:54,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:08:54,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 994 transitions, 9142 flow. Second operand has 23 states, 23 states have (on average 16.565217391304348) internal successors, (381), 23 states have internal predecessors, (381), 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 12:08:54,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:54,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:08:54,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:06,392 INFO L124 PetriNetUnfolderBase]: 44777/58683 cut-off events. [2023-11-17 12:09:06,393 INFO L125 PetriNetUnfolderBase]: For 223436/223436 co-relation queries the response was YES. [2023-11-17 12:09:07,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248837 conditions, 58683 events. 44777/58683 cut-off events. For 223436/223436 co-relation queries the response was YES. Maximal size of possible extension queue 2980. Compared 349668 event pairs, 4786 based on Foata normal form. 488/59151 useless extension candidates. Maximal degree in co-relation 247854. Up to 45216 conditions per place. [2023-11-17 12:09:07,372 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 1034 selfloop transitions, 575 changer transitions 66/1679 dead transitions. [2023-11-17 12:09:07,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1679 transitions, 16841 flow [2023-11-17 12:09:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-17 12:09:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-17 12:09:07,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1270 transitions. [2023-11-17 12:09:07,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34417344173441733 [2023-11-17 12:09:07,375 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 1270 transitions. [2023-11-17 12:09:07,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 1270 transitions. [2023-11-17 12:09:07,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:07,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 1270 transitions. [2023-11-17 12:09:07,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 28.22222222222222) internal successors, (1270), 45 states have internal predecessors, (1270), 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 12:09:07,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 82.0) internal successors, (3772), 46 states have internal predecessors, (3772), 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 12:09:07,384 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 82.0) internal successors, (3772), 46 states have internal predecessors, (3772), 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 12:09:07,384 INFO L175 Difference]: Start difference. First operand has 230 places, 994 transitions, 9142 flow. Second operand 45 states and 1270 transitions. [2023-11-17 12:09:07,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1679 transitions, 16841 flow [2023-11-17 12:09:08,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1679 transitions, 16061 flow, removed 343 selfloop flow, removed 17 redundant places. [2023-11-17 12:09:08,788 INFO L231 Difference]: Finished difference. Result has 279 places, 1258 transitions, 13135 flow [2023-11-17 12:09:08,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=13135, PETRI_PLACES=279, PETRI_TRANSITIONS=1258} [2023-11-17 12:09:08,789 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2023-11-17 12:09:08,789 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 1258 transitions, 13135 flow [2023-11-17 12:09:08,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 16.565217391304348) internal successors, (381), 23 states have internal predecessors, (381), 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 12:09:08,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:08,790 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 12:09:08,795 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 12:09:08,990 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 12:09:08,991 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 12:09:08,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:08,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1483610629, now seen corresponding path program 4 times [2023-11-17 12:09:08,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:08,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990173417] [2023-11-17 12:09:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:08,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:10,067 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 12:09:10,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:10,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990173417] [2023-11-17 12:09:10,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990173417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:09:10,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687329418] [2023-11-17 12:09:10,068 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:09:10,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:09:10,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:09:10,069 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 12:09:10,092 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 12:09:10,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:09:10,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:09:10,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-17 12:09:10,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:09:10,609 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 12:09:10,683 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 12:09:10,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:09:10,939 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 12:09:10,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687329418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:09:10,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:09:10,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 25 [2023-11-17 12:09:10,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473773277] [2023-11-17 12:09:10,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:09:10,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 12:09:10,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 12:09:10,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-11-17 12:09:10,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:09:10,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 1258 transitions, 13135 flow. Second operand has 26 states, 26 states have (on average 16.192307692307693) internal successors, (421), 26 states have internal predecessors, (421), 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 12:09:10,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:10,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:09:10,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:28,763 INFO L124 PetriNetUnfolderBase]: 58746/77024 cut-off events. [2023-11-17 12:09:28,763 INFO L125 PetriNetUnfolderBase]: For 630525/630525 co-relation queries the response was YES. [2023-11-17 12:09:30,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375385 conditions, 77024 events. 58746/77024 cut-off events. For 630525/630525 co-relation queries the response was YES. Maximal size of possible extension queue 3785. Compared 471279 event pairs, 7901 based on Foata normal form. 388/77392 useless extension candidates. Maximal degree in co-relation 374451. Up to 57781 conditions per place. [2023-11-17 12:09:30,412 INFO L140 encePairwiseOnDemand]: 67/82 looper letters, 1304 selfloop transitions, 518 changer transitions 44/1870 dead transitions. [2023-11-17 12:09:30,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 1870 transitions, 22530 flow [2023-11-17 12:09:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 12:09:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 12:09:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 769 transitions. [2023-11-17 12:09:30,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34733514001806687 [2023-11-17 12:09:30,414 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 769 transitions. [2023-11-17 12:09:30,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 769 transitions. [2023-11-17 12:09:30,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:09:30,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 769 transitions. [2023-11-17 12:09:30,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 28.48148148148148) internal successors, (769), 27 states have internal predecessors, (769), 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 12:09:30,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 82.0) internal successors, (2296), 28 states have internal predecessors, (2296), 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 12:09:30,419 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 82.0) internal successors, (2296), 28 states have internal predecessors, (2296), 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 12:09:30,419 INFO L175 Difference]: Start difference. First operand has 279 places, 1258 transitions, 13135 flow. Second operand 27 states and 769 transitions. [2023-11-17 12:09:30,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 1870 transitions, 22530 flow [2023-11-17 12:09:33,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 1870 transitions, 21205 flow, removed 608 selfloop flow, removed 13 redundant places. [2023-11-17 12:09:33,897 INFO L231 Difference]: Finished difference. Result has 307 places, 1517 transitions, 17381 flow [2023-11-17 12:09:33,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=12076, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=834, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17381, PETRI_PLACES=307, PETRI_TRANSITIONS=1517} [2023-11-17 12:09:33,899 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 264 predicate places. [2023-11-17 12:09:33,899 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 1517 transitions, 17381 flow [2023-11-17 12:09:33,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.192307692307693) internal successors, (421), 26 states have internal predecessors, (421), 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 12:09:33,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:33,900 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 12:09:33,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 12:09:34,108 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 12:09:34,109 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 12:09:34,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:34,109 INFO L85 PathProgramCache]: Analyzing trace with hash 201943496, now seen corresponding path program 2 times [2023-11-17 12:09:34,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:34,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748842935] [2023-11-17 12:09:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:34,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:34,906 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 12:09:34,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:34,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748842935] [2023-11-17 12:09:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748842935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:09:34,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745940850] [2023-11-17 12:09:34,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:09:34,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:09:34,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:09:34,908 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 12:09:34,911 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 12:09:35,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:09:35,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:09:35,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-17 12:09:35,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:09:35,292 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 12:09:35,354 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 12:09:35,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:09:35,527 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 12:09:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745940850] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:09:35,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:09:35,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 5] total 22 [2023-11-17 12:09:35,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623808144] [2023-11-17 12:09:35,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:09:35,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 12:09:35,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:35,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 12:09:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-11-17 12:09:35,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 82 [2023-11-17 12:09:35,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 1517 transitions, 17381 flow. Second operand has 23 states, 23 states have (on average 16.565217391304348) internal successors, (381), 23 states have internal predecessors, (381), 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 12:09:35,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:35,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 82 [2023-11-17 12:09:35,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand