/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/popl20-commit-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:13:14,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:13:14,175 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 12:13:14,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:13:14,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:13:14,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:13:14,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:13:14,209 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:13:14,210 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:13:14,213 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:13:14,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:13:14,214 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:13:14,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:13:14,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:13:14,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:13:14,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:13:14,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:13:14,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:13:14,217 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:13:14,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:13:14,217 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:13:14,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:13:14,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:13:14,218 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:13:14,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:13:14,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:13:14,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:13:14,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:13:14,221 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:13:14,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:13:14,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:13:14,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:13:14,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:13:14,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:13:14,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:13:14,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:13:14,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:13:14,489 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:13:14,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-11-17 12:13:15,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:13:15,997 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:13:15,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-2.wvr.c [2023-11-17 12:13:16,012 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4850574e9/cea33b3684a44a8ba673ef9c05f95e0a/FLAG44a8f7658 [2023-11-17 12:13:16,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4850574e9/cea33b3684a44a8ba673ef9c05f95e0a [2023-11-17 12:13:16,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:13:16,033 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:13:16,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:13:16,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:13:16,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:13:16,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4149e46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16, skipping insertion in model container [2023-11-17 12:13:16,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:13:16,323 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/popl20-commit-2.wvr.c[5898,5911] [2023-11-17 12:13:16,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:13:16,354 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:13:16,403 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/popl20-commit-2.wvr.c[5898,5911] [2023-11-17 12:13:16,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:13:16,421 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:13:16,422 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:13:16,428 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:13:16,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16 WrapperNode [2023-11-17 12:13:16,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:13:16,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:13:16,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:13:16,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:13:16,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,514 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 481 [2023-11-17 12:13:16,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:13:16,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:13:16,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:13:16,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:13:16,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:13:16,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:13:16,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:13:16,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:13:16,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (1/1) ... [2023-11-17 12:13:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:13:16,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:13:16,628 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 12:13:16,645 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 12:13:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:13:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:13:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:13:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:13:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:13:16,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:13:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:13:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:13:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:13:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:13:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:13:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:13:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:13:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:13:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:13:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:13:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:13:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:13:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:13:16,657 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 12:13:16,818 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:13:16,822 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:13:17,437 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:13:17,931 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:13:17,931 INFO L307 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-17 12:13:17,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:13:17 BoogieIcfgContainer [2023-11-17 12:13:17,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:13:17,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:13:17,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:13:17,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:13:17,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:13:16" (1/3) ... [2023-11-17 12:13:17,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd6295d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:13:17, skipping insertion in model container [2023-11-17 12:13:17,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:13:16" (2/3) ... [2023-11-17 12:13:17,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd6295d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:13:17, skipping insertion in model container [2023-11-17 12:13:17,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:13:17" (3/3) ... [2023-11-17 12:13:17,941 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2023-11-17 12:13:17,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:13:17,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:13:17,956 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:13:18,032 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 12:13:18,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 162 flow [2023-11-17 12:13:18,101 INFO L124 PetriNetUnfolderBase]: 12/63 cut-off events. [2023-11-17 12:13:18,101 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:13:18,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 63 events. 12/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-17 12:13:18,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 162 flow [2023-11-17 12:13:18,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 62 transitions, 148 flow [2023-11-17 12:13:18,117 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:13:18,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 62 transitions, 148 flow [2023-11-17 12:13:18,130 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 62 transitions, 148 flow [2023-11-17 12:13:18,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 148 flow [2023-11-17 12:13:18,153 INFO L124 PetriNetUnfolderBase]: 12/62 cut-off events. [2023-11-17 12:13:18,153 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:13:18,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 62 events. 12/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-17 12:13:18,155 INFO L119 LiptonReduction]: Number of co-enabled transitions 1464 [2023-11-17 12:13:20,215 INFO L134 LiptonReduction]: Checked pairs total: 2405 [2023-11-17 12:13:20,215 INFO L136 LiptonReduction]: Total number of compositions: 25 [2023-11-17 12:13:20,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:13:20,236 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;@1ee32ff6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:13:20,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 12:13:20,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:13:20,261 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2023-11-17 12:13:20,262 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:13:20,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:20,262 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 12:13:20,263 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 12:13:20,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash 38143310, now seen corresponding path program 1 times [2023-11-17 12:13:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:20,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073354117] [2023-11-17 12:13:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:20,771 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 12:13:20,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:20,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073354117] [2023-11-17 12:13:20,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073354117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:20,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:20,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:13:20,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754757414] [2023-11-17 12:13:20,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:13:20,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:20,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:13:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:13:20,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:20,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 12:13:20,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:20,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:20,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:21,917 INFO L124 PetriNetUnfolderBase]: 6452/8113 cut-off events. [2023-11-17 12:13:21,918 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2023-11-17 12:13:21,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16684 conditions, 8113 events. 6452/8113 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 34126 event pairs, 1323 based on Foata normal form. 1/5568 useless extension candidates. Maximal degree in co-relation 14779. Up to 7798 conditions per place. [2023-11-17 12:13:21,972 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 58 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2023-11-17 12:13:21,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 309 flow [2023-11-17 12:13:21,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:13:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:13:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2023-11-17 12:13:21,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37681159420289856 [2023-11-17 12:13:21,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 104 transitions. [2023-11-17 12:13:21,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 104 transitions. [2023-11-17 12:13:21,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:21,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 104 transitions. [2023-11-17 12:13:21,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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 12:13:21,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:21,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:21,999 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 114 flow. Second operand 3 states and 104 transitions. [2023-11-17 12:13:21,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 309 flow [2023-11-17 12:13:22,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 68 transitions, 279 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 12:13:22,008 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 131 flow [2023-11-17 12:13:22,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-11-17 12:13:22,014 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-11-17 12:13:22,014 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 131 flow [2023-11-17 12:13:22,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 12:13:22,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:22,015 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, 1, 1] [2023-11-17 12:13:22,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:13:22,015 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 12:13:22,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1744055985, now seen corresponding path program 1 times [2023-11-17 12:13:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:22,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713971046] [2023-11-17 12:13:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:22,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:22,220 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 12:13:22,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:22,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713971046] [2023-11-17 12:13:22,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713971046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:22,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:22,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:13:22,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115914504] [2023-11-17 12:13:22,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:22,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:13:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:13:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:13:22,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:22,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 12:13:22,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:22,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:22,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:23,282 INFO L124 PetriNetUnfolderBase]: 6545/8375 cut-off events. [2023-11-17 12:13:23,282 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2023-11-17 12:13:23,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19164 conditions, 8375 events. 6545/8375 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 37037 event pairs, 1437 based on Foata normal form. 186/7859 useless extension candidates. Maximal degree in co-relation 15912. Up to 6741 conditions per place. [2023-11-17 12:13:23,340 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 67 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-17 12:13:23,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 73 transitions, 329 flow [2023-11-17 12:13:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:13:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:13:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2023-11-17 12:13:23,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38405797101449274 [2023-11-17 12:13:23,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 106 transitions. [2023-11-17 12:13:23,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 106 transitions. [2023-11-17 12:13:23,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:23,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 106 transitions. [2023-11-17 12:13:23,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 12:13:23,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:23,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:23,344 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 131 flow. Second operand 3 states and 106 transitions. [2023-11-17 12:13:23,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 73 transitions, 329 flow [2023-11-17 12:13:23,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:13:23,347 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 134 flow [2023-11-17 12:13:23,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-17 12:13:23,348 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-11-17 12:13:23,348 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 134 flow [2023-11-17 12:13:23,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 12:13:23,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:23,349 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, 1, 1] [2023-11-17 12:13:23,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:13:23,349 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 12:13:23,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:23,350 INFO L85 PathProgramCache]: Analyzing trace with hash 84768450, now seen corresponding path program 1 times [2023-11-17 12:13:23,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:23,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278354717] [2023-11-17 12:13:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:23,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:23,449 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 12:13:23,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:23,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278354717] [2023-11-17 12:13:23,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278354717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:23,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:23,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:13:23,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850798602] [2023-11-17 12:13:23,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:23,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:13:23,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:23,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:13:23,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:13:23,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:23,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 12:13:23,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:23,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:23,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:24,384 INFO L124 PetriNetUnfolderBase]: 6096/7828 cut-off events. [2023-11-17 12:13:24,384 INFO L125 PetriNetUnfolderBase]: For 2491/2492 co-relation queries the response was YES. [2023-11-17 12:13:24,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18681 conditions, 7828 events. 6096/7828 cut-off events. For 2491/2492 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 33914 event pairs, 1208 based on Foata normal form. 139/7324 useless extension candidates. Maximal degree in co-relation 13568. Up to 6747 conditions per place. [2023-11-17 12:13:24,430 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 67 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-17 12:13:24,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 335 flow [2023-11-17 12:13:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:13:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:13:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2023-11-17 12:13:24,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38768115942028986 [2023-11-17 12:13:24,432 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2023-11-17 12:13:24,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2023-11-17 12:13:24,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:24,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2023-11-17 12:13:24,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 12:13:24,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:24,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:24,434 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 134 flow. Second operand 3 states and 107 transitions. [2023-11-17 12:13:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 335 flow [2023-11-17 12:13:24,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:13:24,437 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 140 flow [2023-11-17 12:13:24,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-11-17 12:13:24,438 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2023-11-17 12:13:24,438 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 140 flow [2023-11-17 12:13:24,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 12:13:24,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:24,439 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, 1, 1] [2023-11-17 12:13:24,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:13:24,439 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 12:13:24,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash -941432425, now seen corresponding path program 1 times [2023-11-17 12:13:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:24,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190383791] [2023-11-17 12:13:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:24,552 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 12:13:24,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:24,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190383791] [2023-11-17 12:13:24,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190383791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:24,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:24,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:13:24,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168215893] [2023-11-17 12:13:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:24,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:13:24,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:13:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:13:24,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:24,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 12:13:24,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:24,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:24,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:25,713 INFO L124 PetriNetUnfolderBase]: 7241/9308 cut-off events. [2023-11-17 12:13:25,713 INFO L125 PetriNetUnfolderBase]: For 4362/4363 co-relation queries the response was YES. [2023-11-17 12:13:25,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23254 conditions, 9308 events. 7241/9308 cut-off events. For 4362/4363 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 41656 event pairs, 1601 based on Foata normal form. 150/8755 useless extension candidates. Maximal degree in co-relation 16995. Up to 6801 conditions per place. [2023-11-17 12:13:25,765 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 60 selfloop transitions, 2 changer transitions 8/74 dead transitions. [2023-11-17 12:13:25,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 343 flow [2023-11-17 12:13:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:13:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:13:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-17 12:13:25,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39855072463768115 [2023-11-17 12:13:25,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-17 12:13:25,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-17 12:13:25,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:25,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-17 12:13:25,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 12:13:25,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:25,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:25,772 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 140 flow. Second operand 3 states and 110 transitions. [2023-11-17 12:13:25,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 343 flow [2023-11-17 12:13:25,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:13:25,776 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 146 flow [2023-11-17 12:13:25,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-11-17 12:13:25,778 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-11-17 12:13:25,778 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 146 flow [2023-11-17 12:13:25,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 12:13:25,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:25,778 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, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:25,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:13:25,779 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 12:13:25,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 471593127, now seen corresponding path program 1 times [2023-11-17 12:13:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114913765] [2023-11-17 12:13:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:25,890 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 12:13:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114913765] [2023-11-17 12:13:25,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114913765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:25,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:25,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 12:13:25,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287198903] [2023-11-17 12:13:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:25,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:13:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:13:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:13:25,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:25,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 12:13:25,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:25,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:25,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:26,431 INFO L124 PetriNetUnfolderBase]: 3605/4664 cut-off events. [2023-11-17 12:13:26,432 INFO L125 PetriNetUnfolderBase]: For 2960/2960 co-relation queries the response was YES. [2023-11-17 12:13:26,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12120 conditions, 4664 events. 3605/4664 cut-off events. For 2960/2960 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18688 event pairs, 1445 based on Foata normal form. 30/4390 useless extension candidates. Maximal degree in co-relation 3143. Up to 4435 conditions per place. [2023-11-17 12:13:26,458 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 47 selfloop transitions, 2 changer transitions 9/62 dead transitions. [2023-11-17 12:13:26,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 292 flow [2023-11-17 12:13:26,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:13:26,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:13:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-17 12:13:26,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34057971014492755 [2023-11-17 12:13:26,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-17 12:13:26,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-17 12:13:26,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:26,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-17 12:13:26,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 12:13:26,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:26,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 12:13:26,463 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 146 flow. Second operand 3 states and 94 transitions. [2023-11-17 12:13:26,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 292 flow [2023-11-17 12:13:26,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:13:26,467 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 156 flow [2023-11-17 12:13:26,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-11-17 12:13:26,469 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-11-17 12:13:26,470 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 156 flow [2023-11-17 12:13:26,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 12:13:26,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:26,470 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:26,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:13:26,470 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 12:13:26,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash 985599086, now seen corresponding path program 1 times [2023-11-17 12:13:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:26,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846553468] [2023-11-17 12:13:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:13:26,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:26,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846553468] [2023-11-17 12:13:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846553468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:26,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:26,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:13:26,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242202374] [2023-11-17 12:13:26,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:26,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:13:26,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:26,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:13:26,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:13:26,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:26,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 12:13:26,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:26,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:26,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:27,250 INFO L124 PetriNetUnfolderBase]: 3725/4893 cut-off events. [2023-11-17 12:13:27,250 INFO L125 PetriNetUnfolderBase]: For 3054/3054 co-relation queries the response was YES. [2023-11-17 12:13:27,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12882 conditions, 4893 events. 3725/4893 cut-off events. For 3054/3054 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 20718 event pairs, 2472 based on Foata normal form. 30/4911 useless extension candidates. Maximal degree in co-relation 7575. Up to 4650 conditions per place. [2023-11-17 12:13:27,277 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 45 selfloop transitions, 2 changer transitions 26/77 dead transitions. [2023-11-17 12:13:27,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 364 flow [2023-11-17 12:13:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:13:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:13:27,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-17 12:13:27,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328804347826087 [2023-11-17 12:13:27,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-17 12:13:27,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-17 12:13:27,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:27,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-17 12:13:27,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 12:13:27,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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 12:13:27,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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 12:13:27,281 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 156 flow. Second operand 4 states and 121 transitions. [2023-11-17 12:13:27,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 364 flow [2023-11-17 12:13:27,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:13:27,285 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 168 flow [2023-11-17 12:13:27,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-11-17 12:13:27,288 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-11-17 12:13:27,288 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 168 flow [2023-11-17 12:13:27,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 12:13:27,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:27,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:27,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:13:27,289 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 12:13:27,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:27,289 INFO L85 PathProgramCache]: Analyzing trace with hash -212770436, now seen corresponding path program 1 times [2023-11-17 12:13:27,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:27,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056232032] [2023-11-17 12:13:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:27,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:13:27,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:27,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056232032] [2023-11-17 12:13:27,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056232032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:27,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:27,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:13:27,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258176338] [2023-11-17 12:13:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:27,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:13:27,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:13:27,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:13:27,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:27,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 12:13:27,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:27,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:27,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:28,287 INFO L124 PetriNetUnfolderBase]: 4094/5414 cut-off events. [2023-11-17 12:13:28,288 INFO L125 PetriNetUnfolderBase]: For 3410/3410 co-relation queries the response was YES. [2023-11-17 12:13:28,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14239 conditions, 5414 events. 4094/5414 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 23599 event pairs, 2736 based on Foata normal form. 32/5433 useless extension candidates. Maximal degree in co-relation 14217. Up to 4648 conditions per place. [2023-11-17 12:13:28,324 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 44 selfloop transitions, 4 changer transitions 38/90 dead transitions. [2023-11-17 12:13:28,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 446 flow [2023-11-17 12:13:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:13:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:13:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2023-11-17 12:13:28,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31956521739130433 [2023-11-17 12:13:28,326 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 147 transitions. [2023-11-17 12:13:28,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 147 transitions. [2023-11-17 12:13:28,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:28,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 147 transitions. [2023-11-17 12:13:28,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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 12:13:28,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 12:13:28,328 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 12:13:28,328 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 168 flow. Second operand 5 states and 147 transitions. [2023-11-17 12:13:28,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 446 flow [2023-11-17 12:13:28,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 438 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 12:13:28,333 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 192 flow [2023-11-17 12:13:28,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-11-17 12:13:28,334 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2023-11-17 12:13:28,334 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 192 flow [2023-11-17 12:13:28,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 12:13:28,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:28,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:28,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:13:28,335 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 12:13:28,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:28,335 INFO L85 PathProgramCache]: Analyzing trace with hash 774324196, now seen corresponding path program 1 times [2023-11-17 12:13:28,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452123273] [2023-11-17 12:13:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:28,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:13:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:28,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452123273] [2023-11-17 12:13:28,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452123273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:28,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:28,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:13:28,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681533543] [2023-11-17 12:13:28,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:28,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:13:28,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:13:28,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:13:28,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:28,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 12:13:28,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:28,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:28,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:29,296 INFO L124 PetriNetUnfolderBase]: 3792/4999 cut-off events. [2023-11-17 12:13:29,296 INFO L125 PetriNetUnfolderBase]: For 3111/3111 co-relation queries the response was YES. [2023-11-17 12:13:29,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13168 conditions, 4999 events. 3792/4999 cut-off events. For 3111/3111 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21232 event pairs, 2540 based on Foata normal form. 8/4999 useless extension candidates. Maximal degree in co-relation 13135. Up to 4646 conditions per place. [2023-11-17 12:13:29,327 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 43 selfloop transitions, 6 changer transitions 26/79 dead transitions. [2023-11-17 12:13:29,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 422 flow [2023-11-17 12:13:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:13:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:13:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2023-11-17 12:13:29,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956521739130435 [2023-11-17 12:13:29,329 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 136 transitions. [2023-11-17 12:13:29,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 136 transitions. [2023-11-17 12:13:29,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:29,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 136 transitions. [2023-11-17 12:13:29,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 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 12:13:29,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 12:13:29,331 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 12:13:29,331 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 192 flow. Second operand 5 states and 136 transitions. [2023-11-17 12:13:29,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 422 flow [2023-11-17 12:13:29,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 390 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-17 12:13:29,335 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 206 flow [2023-11-17 12:13:29,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-17 12:13:29,336 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-11-17 12:13:29,336 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 206 flow [2023-11-17 12:13:29,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 12:13:29,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:29,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:29,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:13:29,337 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 12:13:29,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:29,338 INFO L85 PathProgramCache]: Analyzing trace with hash -453464074, now seen corresponding path program 1 times [2023-11-17 12:13:29,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:29,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274366213] [2023-11-17 12:13:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:13:29,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:29,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274366213] [2023-11-17 12:13:29,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274366213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:29,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:29,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:13:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679314780] [2023-11-17 12:13:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:29,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:13:29,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:13:29,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:13:29,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:29,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 12:13:29,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:29,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:29,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:30,035 INFO L124 PetriNetUnfolderBase]: 3818/5040 cut-off events. [2023-11-17 12:13:30,035 INFO L125 PetriNetUnfolderBase]: For 3104/3104 co-relation queries the response was YES. [2023-11-17 12:13:30,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13261 conditions, 5040 events. 3818/5040 cut-off events. For 3104/3104 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 21625 event pairs, 2560 based on Foata normal form. 16/5049 useless extension candidates. Maximal degree in co-relation 13225. Up to 4644 conditions per place. [2023-11-17 12:13:30,057 INFO L140 encePairwiseOnDemand]: 82/92 looper letters, 42 selfloop transitions, 8 changer transitions 25/79 dead transitions. [2023-11-17 12:13:30,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 79 transitions, 434 flow [2023-11-17 12:13:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:13:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:13:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2023-11-17 12:13:30,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956521739130435 [2023-11-17 12:13:30,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 136 transitions. [2023-11-17 12:13:30,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 136 transitions. [2023-11-17 12:13:30,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:30,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 136 transitions. [2023-11-17 12:13:30,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 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 12:13:30,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 12:13:30,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 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 12:13:30,060 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 206 flow. Second operand 5 states and 136 transitions. [2023-11-17 12:13:30,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 79 transitions, 434 flow [2023-11-17 12:13:30,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 406 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 12:13:30,063 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 216 flow [2023-11-17 12:13:30,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-11-17 12:13:30,064 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 16 predicate places. [2023-11-17 12:13:30,064 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 216 flow [2023-11-17 12:13:30,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 12:13:30,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:30,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:30,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:13:30,065 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 12:13:30,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1343693681, now seen corresponding path program 1 times [2023-11-17 12:13:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:30,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562591922] [2023-11-17 12:13:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:30,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:13:30,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:30,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562591922] [2023-11-17 12:13:30,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562591922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:13:30,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661980303] [2023-11-17 12:13:30,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:30,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:30,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:13:30,375 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 12:13:30,396 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 12:13:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:30,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:13:30,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:13:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:13:30,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:13:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:13:30,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661980303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:13:30,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:13:30,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2023-11-17 12:13:30,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134096137] [2023-11-17 12:13:30,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:13:30,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 12:13:30,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:30,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 12:13:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:13:30,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:30,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 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 12:13:30,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:30,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:30,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:31,567 INFO L124 PetriNetUnfolderBase]: 3836/5079 cut-off events. [2023-11-17 12:13:31,568 INFO L125 PetriNetUnfolderBase]: For 3218/3218 co-relation queries the response was YES. [2023-11-17 12:13:31,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13402 conditions, 5079 events. 3836/5079 cut-off events. For 3218/3218 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21235 event pairs, 1568 based on Foata normal form. 34/5107 useless extension candidates. Maximal degree in co-relation 12413. Up to 4435 conditions per place. [2023-11-17 12:13:31,598 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 50 selfloop transitions, 4 changer transitions 57/115 dead transitions. [2023-11-17 12:13:31,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 115 transitions, 638 flow [2023-11-17 12:13:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:13:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:13:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2023-11-17 12:13:31,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2826086956521739 [2023-11-17 12:13:31,600 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 208 transitions. [2023-11-17 12:13:31,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 208 transitions. [2023-11-17 12:13:31,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:31,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 208 transitions. [2023-11-17 12:13:31,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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 12:13:31,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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 12:13:31,603 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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 12:13:31,603 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 216 flow. Second operand 8 states and 208 transitions. [2023-11-17 12:13:31,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 115 transitions, 638 flow [2023-11-17 12:13:31,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 115 transitions, 606 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 12:13:31,607 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 224 flow [2023-11-17 12:13:31,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-11-17 12:13:31,608 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-11-17 12:13:31,608 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 224 flow [2023-11-17 12:13:31,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 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 12:13:31,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:31,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:31,619 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 12:13:31,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-17 12:13:31,819 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 12:13:31,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1805764181, now seen corresponding path program 2 times [2023-11-17 12:13:31,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:31,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155017958] [2023-11-17 12:13:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:31,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:13:32,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:32,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155017958] [2023-11-17 12:13:32,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155017958] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:13:32,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531451304] [2023-11-17 12:13:32,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:13:32,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:32,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:13:32,065 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 12:13:32,080 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 12:13:32,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:13:32,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:13:32,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 12:13:32,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:13:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 12:13:32,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:13:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 12:13:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531451304] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:13:32,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:13:32,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2023-11-17 12:13:32,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674739023] [2023-11-17 12:13:32,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:13:32,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:13:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:13:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:13:32,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:32,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 224 flow. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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 12:13:32,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:32,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:32,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:33,223 INFO L124 PetriNetUnfolderBase]: 4854/6444 cut-off events. [2023-11-17 12:13:33,224 INFO L125 PetriNetUnfolderBase]: For 5296/5296 co-relation queries the response was YES. [2023-11-17 12:13:33,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17813 conditions, 6444 events. 4854/6444 cut-off events. For 5296/5296 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 29132 event pairs, 2736 based on Foata normal form. 298/6736 useless extension candidates. Maximal degree in co-relation 17769. Up to 4650 conditions per place. [2023-11-17 12:13:33,259 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 46 selfloop transitions, 6 changer transitions 56/112 dead transitions. [2023-11-17 12:13:33,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 635 flow [2023-11-17 12:13:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 12:13:33,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 12:13:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions. [2023-11-17 12:13:33,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2510869565217391 [2023-11-17 12:13:33,261 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 231 transitions. [2023-11-17 12:13:33,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 231 transitions. [2023-11-17 12:13:33,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:33,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 231 transitions. [2023-11-17 12:13:33,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 23.1) internal successors, (231), 10 states have internal predecessors, (231), 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 12:13:33,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 12:13:33,263 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 12:13:33,264 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 224 flow. Second operand 10 states and 231 transitions. [2023-11-17 12:13:33,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 635 flow [2023-11-17 12:13:33,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 619 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 12:13:33,267 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 242 flow [2023-11-17 12:13:33,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2023-11-17 12:13:33,268 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-11-17 12:13:33,268 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 242 flow [2023-11-17 12:13:33,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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 12:13:33,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:33,268 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:33,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 12:13:33,475 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,SelfDestructingSolverStorable10 [2023-11-17 12:13:33,475 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 12:13:33,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:33,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1824524707, now seen corresponding path program 3 times [2023-11-17 12:13:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:33,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73785881] [2023-11-17 12:13:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 12:13:33,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:33,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73785881] [2023-11-17 12:13:33,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73785881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:33,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:13:33,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:13:33,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799290909] [2023-11-17 12:13:33,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:33,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:13:33,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:33,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:13:33,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:13:33,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:33,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 12:13:33,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:33,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:34,832 INFO L124 PetriNetUnfolderBase]: 9145/11844 cut-off events. [2023-11-17 12:13:34,832 INFO L125 PetriNetUnfolderBase]: For 11329/11329 co-relation queries the response was YES. [2023-11-17 12:13:34,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34420 conditions, 11844 events. 9145/11844 cut-off events. For 11329/11329 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 52251 event pairs, 2544 based on Foata normal form. 316/12156 useless extension candidates. Maximal degree in co-relation 34373. Up to 4655 conditions per place. [2023-11-17 12:13:34,900 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 91 selfloop transitions, 12 changer transitions 0/107 dead transitions. [2023-11-17 12:13:34,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 107 transitions, 634 flow [2023-11-17 12:13:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:13:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:13:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2023-11-17 12:13:34,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38858695652173914 [2023-11-17 12:13:34,901 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 143 transitions. [2023-11-17 12:13:34,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 143 transitions. [2023-11-17 12:13:34,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:34,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 143 transitions. [2023-11-17 12:13:34,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 12:13:34,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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 12:13:34,903 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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 12:13:34,903 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 242 flow. Second operand 4 states and 143 transitions. [2023-11-17 12:13:34,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 107 transitions, 634 flow [2023-11-17 12:13:34,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 107 transitions, 600 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-11-17 12:13:34,926 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 316 flow [2023-11-17 12:13:34,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=316, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-11-17 12:13:34,927 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-11-17 12:13:34,927 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 316 flow [2023-11-17 12:13:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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 12:13:34,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:34,927 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:34,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 12:13:34,927 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 12:13:34,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1204726259, now seen corresponding path program 1 times [2023-11-17 12:13:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83075913] [2023-11-17 12:13:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:34,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:13:35,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83075913] [2023-11-17 12:13:35,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83075913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:13:35,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666510686] [2023-11-17 12:13:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:35,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:35,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:13:35,259 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 12:13:35,281 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 12:13:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:35,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 12:13:35,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:13:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 12:13:35,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 12:13:35,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666510686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:13:35,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 12:13:35,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-17 12:13:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869720242] [2023-11-17 12:13:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:13:35,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:13:35,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:35,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:13:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:13:35,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:35,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 12:13:35,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:35,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:35,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:37,435 INFO L124 PetriNetUnfolderBase]: 16217/21346 cut-off events. [2023-11-17 12:13:37,435 INFO L125 PetriNetUnfolderBase]: For 29408/29408 co-relation queries the response was YES. [2023-11-17 12:13:37,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69526 conditions, 21346 events. 16217/21346 cut-off events. For 29408/29408 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 98354 event pairs, 4237 based on Foata normal form. 448/21789 useless extension candidates. Maximal degree in co-relation 69483. Up to 8305 conditions per place. [2023-11-17 12:13:37,555 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 125 selfloop transitions, 5 changer transitions 0/134 dead transitions. [2023-11-17 12:13:37,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 134 transitions, 916 flow [2023-11-17 12:13:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:13:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:13:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2023-11-17 12:13:37,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38858695652173914 [2023-11-17 12:13:37,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 143 transitions. [2023-11-17 12:13:37,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 143 transitions. [2023-11-17 12:13:37,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:37,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 143 transitions. [2023-11-17 12:13:37,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 12:13:37,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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 12:13:37,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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 12:13:37,558 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 316 flow. Second operand 4 states and 143 transitions. [2023-11-17 12:13:37,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 134 transitions, 916 flow [2023-11-17 12:13:37,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 134 transitions, 872 flow, removed 22 selfloop flow, removed 0 redundant places. [2023-11-17 12:13:37,633 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 338 flow [2023-11-17 12:13:37,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2023-11-17 12:13:37,634 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-11-17 12:13:37,634 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 338 flow [2023-11-17 12:13:37,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 12:13:37,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:37,634 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:37,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-17 12:13:37,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:37,842 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 12:13:37,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:37,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1496568768, now seen corresponding path program 1 times [2023-11-17 12:13:37,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:37,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376772523] [2023-11-17 12:13:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:37,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:13:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376772523] [2023-11-17 12:13:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376772523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:13:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053089943] [2023-11-17 12:13:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:38,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:38,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:13:38,175 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 12:13:38,196 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 12:13:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:38,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 12:13:38,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:13:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:13:38,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:13:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 12:13:38,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053089943] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:13:38,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:13:38,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-17 12:13:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141740453] [2023-11-17 12:13:38,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:13:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 12:13:38,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:38,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 12:13:38,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-17 12:13:38,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 92 [2023-11-17 12:13:38,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 338 flow. Second operand has 18 states, 18 states have (on average 17.0) internal successors, (306), 18 states have internal predecessors, (306), 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 12:13:38,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:38,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 92 [2023-11-17 12:13:38,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:41,360 INFO L124 PetriNetUnfolderBase]: 16552/21930 cut-off events. [2023-11-17 12:13:41,360 INFO L125 PetriNetUnfolderBase]: For 33768/33768 co-relation queries the response was YES. [2023-11-17 12:13:41,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71981 conditions, 21930 events. 16552/21930 cut-off events. For 33768/33768 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 104956 event pairs, 11186 based on Foata normal form. 32/21956 useless extension candidates. Maximal degree in co-relation 70357. Up to 21330 conditions per place. [2023-11-17 12:13:41,455 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 61 selfloop transitions, 4 changer transitions 55/124 dead transitions. [2023-11-17 12:13:41,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 800 flow [2023-11-17 12:13:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:13:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:13:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2023-11-17 12:13:41,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27309782608695654 [2023-11-17 12:13:41,457 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 201 transitions. [2023-11-17 12:13:41,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 201 transitions. [2023-11-17 12:13:41,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:41,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 201 transitions. [2023-11-17 12:13:41,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 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 12:13:41,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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 12:13:41,459 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 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 12:13:41,459 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 338 flow. Second operand 8 states and 201 transitions. [2023-11-17 12:13:41,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 800 flow [2023-11-17 12:13:41,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 124 transitions, 792 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-17 12:13:41,476 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 368 flow [2023-11-17 12:13:41,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=368, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2023-11-17 12:13:41,476 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-11-17 12:13:41,477 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 368 flow [2023-11-17 12:13:41,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.0) internal successors, (306), 18 states have internal predecessors, (306), 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 12:13:41,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:41,477 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:41,487 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 12:13:41,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:41,685 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 12:13:41,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:41,685 INFO L85 PathProgramCache]: Analyzing trace with hash 524899232, now seen corresponding path program 2 times [2023-11-17 12:13:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905681831] [2023-11-17 12:13:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:41,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:13:48,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:48,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905681831] [2023-11-17 12:13:48,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905681831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:13:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631381464] [2023-11-17 12:13:48,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:13:48,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:48,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:13:48,165 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 12:13:48,178 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 12:13:48,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:13:48,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:13:48,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-17 12:13:48,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:13:49,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 12:13:49,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:13:49,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:13:49,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:13:49,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 12:13:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:13:51,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:14:22,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:14:22,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 617 treesize of output 413 [2023-11-17 12:14:24,411 INFO L349 Elim1Store]: treesize reduction 45, result has 95.0 percent of original size [2023-11-17 12:14:24,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 436429 treesize of output 420464 [2023-11-17 12:14:29,294 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:29,307 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:29,318 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:29,339 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:29,355 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:29,357 INFO L224 Elim1Store]: Index analysis took 114 ms [2023-11-17 12:14:30,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:14:30,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 9 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 46 case distinctions, treesize of input 40173 treesize of output 31107 [2023-11-17 12:14:31,312 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:31,327 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:31,336 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:31,349 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:31,367 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:31,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:14:31,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 9 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 46 case distinctions, treesize of input 30381 treesize of output 26211 [2023-11-17 12:14:33,497 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:33,507 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:33,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:33,531 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:33,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:34,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:14:34,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 9 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 46 case distinctions, treesize of input 25372 treesize of output 23650 [2023-11-17 12:14:36,039 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:36,052 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:36,064 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:36,079 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:36,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-17 12:14:36,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:14:36,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 9 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 46 case distinctions, treesize of input 22939 treesize of output 22441 [2023-11-17 12:17:34,755 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 12:17:34,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-11-17 12:17:34,757 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 12:17:34,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 12:17:34,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 12:17:34,958 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2023-11-17 12:17:34,963 INFO L158 Benchmark]: Toolchain (without parser) took 258928.89ms. Allocated memory was 176.2MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 128.6MB in the beginning and 987.4MB in the end (delta: -858.8MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-11-17 12:17:34,963 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:17:34,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.20ms. Allocated memory is still 176.2MB. Free memory was 128.3MB in the beginning and 114.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-11-17 12:17:34,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.40ms. Allocated memory is still 176.2MB. Free memory was 114.7MB in the beginning and 111.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-11-17 12:17:34,964 INFO L158 Benchmark]: Boogie Preprocessor took 65.54ms. Allocated memory is still 176.2MB. Free memory was 111.1MB in the beginning and 108.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:17:34,964 INFO L158 Benchmark]: RCFGBuilder took 1345.45ms. Allocated memory was 176.2MB in the beginning and 277.9MB in the end (delta: 101.7MB). Free memory was 108.4MB in the beginning and 217.7MB in the end (delta: -109.3MB). Peak memory consumption was 54.2MB. Max. memory is 8.0GB. [2023-11-17 12:17:34,964 INFO L158 Benchmark]: TraceAbstraction took 257026.42ms. Allocated memory was 277.9MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 217.1MB in the beginning and 987.4MB in the end (delta: -770.2MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-11-17 12:17:34,965 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 391.20ms. Allocated memory is still 176.2MB. Free memory was 128.3MB in the beginning and 114.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 90.40ms. Allocated memory is still 176.2MB. Free memory was 114.7MB in the beginning and 111.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 65.54ms. Allocated memory is still 176.2MB. Free memory was 111.1MB in the beginning and 108.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1345.45ms. Allocated memory was 176.2MB in the beginning and 277.9MB in the end (delta: 101.7MB). Free memory was 108.4MB in the beginning and 217.7MB in the end (delta: -109.3MB). Peak memory consumption was 54.2MB. Max. memory is 8.0GB. * TraceAbstraction took 257026.42ms. Allocated memory was 277.9MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 217.1MB in the beginning and 987.4MB in the end (delta: -770.2MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 63 PlacesBefore, 50 PlacesAfterwards, 62 TransitionsBefore, 45 TransitionsAfterwards, 1464 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 25 TotalNumberOfCompositions, 2405 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1448, independent: 1395, independent conditional: 0, independent unconditional: 1395, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 919, independent: 883, independent conditional: 0, independent unconditional: 883, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 919, independent: 853, independent conditional: 0, independent unconditional: 853, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 66, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 562, independent: 369, independent conditional: 0, independent unconditional: 369, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1448, independent: 512, independent conditional: 0, independent unconditional: 512, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 919, unknown conditional: 0, unknown unconditional: 919] , Statistics on independence cache: Total cache size (in pairs): 271, Positive cache size: 246, Positive conditional cache size: 0, Positive unconditional cache size: 246, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...