/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 13:21:33,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:21:33,163 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-VariableLbe.epf [2023-08-24 13:21:33,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:21:33,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:21:33,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:21:33,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:21:33,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:21:33,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:21:33,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:21:33,202 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:21:33,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:21:33,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:21:33,204 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:21:33,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:21:33,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:21:33,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:21:33,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:21:33,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:21:33,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:21:33,205 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:21:33,206 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:21:33,206 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:21:33,207 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:21:33,207 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:21:33,207 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:21:33,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:21:33,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:21:33,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:21:33,208 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:21:33,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:21:33,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:21:33,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:21:33,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:21:33,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:21:33,210 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:21:33,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:21:33,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:21:33,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:21:33,524 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:21:33,525 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:21:33,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2023-08-24 13:21:34,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:21:34,917 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:21:34,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x9.wvr.c [2023-08-24 13:21:34,924 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f665fb65/a4042b19ca7147ea9be60dd80653aaac/FLAG386090931 [2023-08-24 13:21:34,934 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f665fb65/a4042b19ca7147ea9be60dd80653aaac [2023-08-24 13:21:34,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:21:34,937 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:21:34,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:21:34,938 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:21:34,940 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:21:34,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:21:34" (1/1) ... [2023-08-24 13:21:34,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c727cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:34, skipping insertion in model container [2023-08-24 13:21:34,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:21:34" (1/1) ... [2023-08-24 13:21:34,967 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:21:35,113 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/bench-exp2x9.wvr.c[2669,2682] [2023-08-24 13:21:35,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:21:35,122 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:21:35,142 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/bench-exp2x9.wvr.c[2669,2682] [2023-08-24 13:21:35,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:21:35,154 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:21:35,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35 WrapperNode [2023-08-24 13:21:35,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:21:35,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:21:35,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:21:35,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:21:35,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,184 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-08-24 13:21:35,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:21:35,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:21:35,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:21:35,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:21:35,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,205 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:21:35,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:21:35,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:21:35,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:21:35,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (1/1) ... [2023-08-24 13:21:35,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:21:35,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:21:35,265 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) [2023-08-24 13:21:35,287 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 [2023-08-24 13:21:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:21:35,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 13:21:35,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 13:21:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 13:21:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 13:21:35,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 13:21:35,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 13:21:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-24 13:21:35,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-24 13:21:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:21:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:21:35,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:21:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:21:35,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:21:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:21:35,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:21:35,302 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 13:21:35,417 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:21:35,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:21:35,708 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:21:35,714 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:21:35,714 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-24 13:21:35,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:21:35 BoogieIcfgContainer [2023-08-24 13:21:35,716 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:21:35,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:21:35,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:21:35,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:21:35,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:21:34" (1/3) ... [2023-08-24 13:21:35,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140db6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:21:35, skipping insertion in model container [2023-08-24 13:21:35,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:21:35" (2/3) ... [2023-08-24 13:21:35,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@140db6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:21:35, skipping insertion in model container [2023-08-24 13:21:35,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:21:35" (3/3) ... [2023-08-24 13:21:35,724 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2023-08-24 13:21:35,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:21:35,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:21:35,739 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:21:35,843 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 13:21:35,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 147 transitions, 326 flow [2023-08-24 13:21:35,968 INFO L124 PetriNetUnfolderBase]: 10/143 cut-off events. [2023-08-24 13:21:35,969 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 13:21:35,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 143 events. 10/143 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-08-24 13:21:35,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 147 transitions, 326 flow [2023-08-24 13:21:35,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 131 transitions, 286 flow [2023-08-24 13:21:35,993 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:21:36,003 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 131 transitions, 286 flow [2023-08-24 13:21:36,005 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 131 transitions, 286 flow [2023-08-24 13:21:36,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 131 transitions, 286 flow [2023-08-24 13:21:36,035 INFO L124 PetriNetUnfolderBase]: 10/131 cut-off events. [2023-08-24 13:21:36,035 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 13:21:36,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 10/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2023-08-24 13:21:36,038 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2023-08-24 13:21:39,504 INFO L134 LiptonReduction]: Checked pairs total: 2977 [2023-08-24 13:21:39,504 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-24 13:21:39,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:21:39,520 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=LoopsAndPotentialCycles, 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;@74b28020, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:21:39,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 13:21:39,526 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:21:39,526 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2023-08-24 13:21:39,526 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 13:21:39,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:21:39,527 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] [2023-08-24 13:21:39,528 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)] === [2023-08-24 13:21:39,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:21:39,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1108684386, now seen corresponding path program 1 times [2023-08-24 13:21:39,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:21:39,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447374039] [2023-08-24 13:21:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:39,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:21:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:40,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:21:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447374039] [2023-08-24 13:21:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447374039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:21:40,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:21:40,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 13:21:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495186555] [2023-08-24 13:21:40,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:21:40,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:21:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:21:40,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:21:40,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:21:40,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 266 [2023-08-24 13:21:40,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-08-24 13:21:40,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:21:40,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 266 [2023-08-24 13:21:40,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:21:40,374 INFO L124 PetriNetUnfolderBase]: 497/677 cut-off events. [2023-08-24 13:21:40,374 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-24 13:21:40,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 677 events. 497/677 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1767 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2023-08-24 13:21:40,382 INFO L140 encePairwiseOnDemand]: 260/266 looper letters, 41 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-08-24 13:21:40,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 233 flow [2023-08-24 13:21:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:21:40,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:21:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-08-24 13:21:40,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38345864661654133 [2023-08-24 13:21:40,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-08-24 13:21:40,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-08-24 13:21:40,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:21:40,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-08-24 13:21:40,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 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) [2023-08-24 13:21:40,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-08-24 13:21:40,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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) [2023-08-24 13:21:40,418 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 3 states and 306 transitions. [2023-08-24 13:21:40,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 233 flow [2023-08-24 13:21:40,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-24 13:21:40,424 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 91 flow [2023-08-24 13:21:40,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-08-24 13:21:40,429 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-08-24 13:21:40,429 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 91 flow [2023-08-24 13:21:40,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-08-24 13:21:40,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:21:40,430 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] [2023-08-24 13:21:40,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:21:40,430 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)] === [2023-08-24 13:21:40,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:21:40,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2012653977, now seen corresponding path program 1 times [2023-08-24 13:21:40,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:21:40,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832794949] [2023-08-24 13:21:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:40,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:21:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:40,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:40,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:21:40,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832794949] [2023-08-24 13:21:40,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832794949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:21:40,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:21:40,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:21:40,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919367264] [2023-08-24 13:21:40,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:21:40,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:21:40,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:21:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:21:40,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:21:40,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:21:40,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-24 13:21:40,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:21:40,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:21:40,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:21:40,800 INFO L124 PetriNetUnfolderBase]: 461/641 cut-off events. [2023-08-24 13:21:40,800 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-08-24 13:21:40,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 641 events. 461/641 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1829 event pairs, 17 based on Foata normal form. 36/677 useless extension candidates. Maximal degree in co-relation 586. Up to 435 conditions per place. [2023-08-24 13:21:40,804 INFO L140 encePairwiseOnDemand]: 259/266 looper letters, 50 selfloop transitions, 9 changer transitions 1/60 dead transitions. [2023-08-24 13:21:40,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 60 transitions, 289 flow [2023-08-24 13:21:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:21:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:21:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-08-24 13:21:40,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37406015037593987 [2023-08-24 13:21:40,808 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-08-24 13:21:40,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-08-24 13:21:40,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:21:40,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-08-24 13:21:40,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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) [2023-08-24 13:21:40,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 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) [2023-08-24 13:21:40,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 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) [2023-08-24 13:21:40,814 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 91 flow. Second operand 4 states and 398 transitions. [2023-08-24 13:21:40,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 60 transitions, 289 flow [2023-08-24 13:21:40,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 60 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:21:40,816 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 127 flow [2023-08-24 13:21:40,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-08-24 13:21:40,817 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-08-24 13:21:40,817 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 127 flow [2023-08-24 13:21:40,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-24 13:21:40,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:21:40,819 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] [2023-08-24 13:21:40,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 13:21:40,819 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)] === [2023-08-24 13:21:40,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:21:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1503050801, now seen corresponding path program 1 times [2023-08-24 13:21:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:21:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342966676] [2023-08-24 13:21:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:21:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:21:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342966676] [2023-08-24 13:21:41,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342966676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:21:41,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:21:41,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:21:41,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931335752] [2023-08-24 13:21:41,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:21:41,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:21:41,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:21:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:21:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:21:41,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:21:41,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-24 13:21:41,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:21:41,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:21:41,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:21:41,196 INFO L124 PetriNetUnfolderBase]: 431/611 cut-off events. [2023-08-24 13:21:41,196 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2023-08-24 13:21:41,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 611 events. 431/611 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1733 event pairs, 47 based on Foata normal form. 30/641 useless extension candidates. Maximal degree in co-relation 523. Up to 405 conditions per place. [2023-08-24 13:21:41,200 INFO L140 encePairwiseOnDemand]: 259/266 looper letters, 44 selfloop transitions, 11 changer transitions 11/66 dead transitions. [2023-08-24 13:21:41,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 359 flow [2023-08-24 13:21:41,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:21:41,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:21:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-08-24 13:21:41,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37406015037593987 [2023-08-24 13:21:41,202 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-08-24 13:21:41,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-08-24 13:21:41,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:21:41,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-08-24 13:21:41,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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) [2023-08-24 13:21:41,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 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) [2023-08-24 13:21:41,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 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) [2023-08-24 13:21:41,206 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 127 flow. Second operand 4 states and 398 transitions. [2023-08-24 13:21:41,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 359 flow [2023-08-24 13:21:41,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 66 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 13:21:41,208 INFO L231 Difference]: Finished difference. Result has 34 places, 37 transitions, 162 flow [2023-08-24 13:21:41,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=34, PETRI_TRANSITIONS=37} [2023-08-24 13:21:41,209 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-24 13:21:41,209 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 37 transitions, 162 flow [2023-08-24 13:21:41,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-24 13:21:41,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:21:41,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:21:41,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 13:21:41,210 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)] === [2023-08-24 13:21:41,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:21:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1990142436, now seen corresponding path program 1 times [2023-08-24 13:21:41,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:21:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422245070] [2023-08-24 13:21:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:41,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:21:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:41,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:21:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422245070] [2023-08-24 13:21:41,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422245070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:21:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973576008] [2023-08-24 13:21:41,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:41,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:21:41,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:21:41,373 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) [2023-08-24 13:21:41,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 13:21:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:41,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 13:21:41,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:21:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:41,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:21:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:41,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973576008] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:21:41,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:21:41,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 13:21:41,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124983389] [2023-08-24 13:21:41,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:21:41,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 13:21:41,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:21:41,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 13:21:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 13:21:41,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:21:41,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 37 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-08-24 13:21:41,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:21:41,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:21:41,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:21:42,028 INFO L124 PetriNetUnfolderBase]: 809/1129 cut-off events. [2023-08-24 13:21:42,028 INFO L125 PetriNetUnfolderBase]: For 711/711 co-relation queries the response was YES. [2023-08-24 13:21:42,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1129 events. 809/1129 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3544 event pairs, 185 based on Foata normal form. 30/1159 useless extension candidates. Maximal degree in co-relation 819. Up to 422 conditions per place. [2023-08-24 13:21:42,034 INFO L140 encePairwiseOnDemand]: 259/266 looper letters, 85 selfloop transitions, 14 changer transitions 3/102 dead transitions. [2023-08-24 13:21:42,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 102 transitions, 567 flow [2023-08-24 13:21:42,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:21:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:21:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2023-08-24 13:21:42,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37593984962406013 [2023-08-24 13:21:42,037 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2023-08-24 13:21:42,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2023-08-24 13:21:42,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:21:42,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2023-08-24 13:21:42,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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) [2023-08-24 13:21:42,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 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) [2023-08-24 13:21:42,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 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) [2023-08-24 13:21:42,042 INFO L175 Difference]: Start difference. First operand has 34 places, 37 transitions, 162 flow. Second operand 6 states and 600 transitions. [2023-08-24 13:21:42,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 102 transitions, 567 flow [2023-08-24 13:21:42,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 102 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:21:42,045 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 224 flow [2023-08-24 13:21:42,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-08-24 13:21:42,045 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-24 13:21:42,046 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 224 flow [2023-08-24 13:21:42,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-08-24 13:21:42,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:21:42,046 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] [2023-08-24 13:21:42,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 13:21:42,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:21:42,253 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)] === [2023-08-24 13:21:42,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:21:42,253 INFO L85 PathProgramCache]: Analyzing trace with hash -357686183, now seen corresponding path program 2 times [2023-08-24 13:21:42,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:21:42,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604791750] [2023-08-24 13:21:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:42,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:21:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:42,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:21:42,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604791750] [2023-08-24 13:21:42,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604791750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:21:42,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:21:42,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:21:42,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203697223] [2023-08-24 13:21:42,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:21:42,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:21:42,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:21:42,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:21:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:21:42,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:21:42,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-24 13:21:42,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:21:42,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:21:42,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:21:42,587 INFO L124 PetriNetUnfolderBase]: 897/1245 cut-off events. [2023-08-24 13:21:42,587 INFO L125 PetriNetUnfolderBase]: For 2058/2058 co-relation queries the response was YES. [2023-08-24 13:21:42,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 1245 events. 897/1245 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3946 event pairs, 305 based on Foata normal form. 28/1273 useless extension candidates. Maximal degree in co-relation 2498. Up to 937 conditions per place. [2023-08-24 13:21:42,595 INFO L140 encePairwiseOnDemand]: 260/266 looper letters, 59 selfloop transitions, 10 changer transitions 3/72 dead transitions. [2023-08-24 13:21:42,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 72 transitions, 473 flow [2023-08-24 13:21:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:21:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:21:42,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2023-08-24 13:21:42,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37218045112781956 [2023-08-24 13:21:42,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2023-08-24 13:21:42,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2023-08-24 13:21:42,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:21:42,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2023-08-24 13:21:42,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-24 13:21:42,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 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) [2023-08-24 13:21:42,600 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 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) [2023-08-24 13:21:42,600 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 224 flow. Second operand 4 states and 396 transitions. [2023-08-24 13:21:42,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 72 transitions, 473 flow [2023-08-24 13:21:42,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 72 transitions, 462 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:21:42,605 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 246 flow [2023-08-24 13:21:42,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-24 13:21:42,606 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-24 13:21:42,606 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 246 flow [2023-08-24 13:21:42,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-24 13:21:42,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:21:42,607 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] [2023-08-24 13:21:42,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 13:21:42,607 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)] === [2023-08-24 13:21:42,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:21:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -588249057, now seen corresponding path program 2 times [2023-08-24 13:21:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:21:42,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787888820] [2023-08-24 13:21:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:21:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:42,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:21:42,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787888820] [2023-08-24 13:21:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787888820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:21:42,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247450396] [2023-08-24 13:21:42,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:21:42,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:21:42,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:21:42,727 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) [2023-08-24 13:21:42,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 13:21:42,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:21:42,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:21:42,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 13:21:42,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:21:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:42,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:21:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:43,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247450396] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:21:43,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:21:43,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 13:21:43,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690109122] [2023-08-24 13:21:43,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:21:43,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 13:21:43,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:21:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 13:21:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 13:21:43,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:21:43,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 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) [2023-08-24 13:21:43,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:21:43,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:21:43,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:21:43,407 INFO L124 PetriNetUnfolderBase]: 1793/2461 cut-off events. [2023-08-24 13:21:43,407 INFO L125 PetriNetUnfolderBase]: For 4620/4620 co-relation queries the response was YES. [2023-08-24 13:21:43,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9082 conditions, 2461 events. 1793/2461 cut-off events. For 4620/4620 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9149 event pairs, 325 based on Foata normal form. 104/2565 useless extension candidates. Maximal degree in co-relation 4890. Up to 1139 conditions per place. [2023-08-24 13:21:43,421 INFO L140 encePairwiseOnDemand]: 259/266 looper letters, 111 selfloop transitions, 14 changer transitions 3/128 dead transitions. [2023-08-24 13:21:43,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 128 transitions, 880 flow [2023-08-24 13:21:43,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:21:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:21:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2023-08-24 13:21:43,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-08-24 13:21:43,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 604 transitions. [2023-08-24 13:21:43,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 604 transitions. [2023-08-24 13:21:43,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:21:43,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 604 transitions. [2023-08-24 13:21:43,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 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) [2023-08-24 13:21:43,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 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) [2023-08-24 13:21:43,428 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 266.0) internal successors, (1862), 7 states have internal predecessors, (1862), 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) [2023-08-24 13:21:43,428 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 246 flow. Second operand 6 states and 604 transitions. [2023-08-24 13:21:43,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 128 transitions, 880 flow [2023-08-24 13:21:43,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 128 transitions, 844 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-24 13:21:43,441 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 296 flow [2023-08-24 13:21:43,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-24 13:21:43,442 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-24 13:21:43,442 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 296 flow [2023-08-24 13:21:43,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 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) [2023-08-24 13:21:43,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:21:43,442 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] [2023-08-24 13:21:43,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 13:21:43,647 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,SelfDestructingSolverStorable5 [2023-08-24 13:21:43,648 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)] === [2023-08-24 13:21:43,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:21:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1066091176, now seen corresponding path program 1 times [2023-08-24 13:21:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:21:43,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887581317] [2023-08-24 13:21:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:43,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:21:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:43,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:21:43,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887581317] [2023-08-24 13:21:43,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887581317] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:21:43,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:21:43,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 13:21:43,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142767170] [2023-08-24 13:21:43,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:21:43,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 13:21:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:21:43,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 13:21:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 13:21:43,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:21:43,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-24 13:21:43,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:21:43,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:21:43,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:21:44,087 INFO L124 PetriNetUnfolderBase]: 2009/2745 cut-off events. [2023-08-24 13:21:44,087 INFO L125 PetriNetUnfolderBase]: For 7050/7050 co-relation queries the response was YES. [2023-08-24 13:21:44,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11277 conditions, 2745 events. 2009/2745 cut-off events. For 7050/7050 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10242 event pairs, 539 based on Foata normal form. 68/2813 useless extension candidates. Maximal degree in co-relation 6065. Up to 2309 conditions per place. [2023-08-24 13:21:44,107 INFO L140 encePairwiseOnDemand]: 260/266 looper letters, 70 selfloop transitions, 10 changer transitions 3/83 dead transitions. [2023-08-24 13:21:44,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 83 transitions, 624 flow [2023-08-24 13:21:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 13:21:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 13:21:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2023-08-24 13:21:44,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37218045112781956 [2023-08-24 13:21:44,109 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2023-08-24 13:21:44,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2023-08-24 13:21:44,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:21:44,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2023-08-24 13:21:44,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2023-08-24 13:21:44,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 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) [2023-08-24 13:21:44,112 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 266.0) internal successors, (1330), 5 states have internal predecessors, (1330), 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) [2023-08-24 13:21:44,112 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 296 flow. Second operand 4 states and 396 transitions. [2023-08-24 13:21:44,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 83 transitions, 624 flow [2023-08-24 13:21:44,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 83 transitions, 613 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:21:44,129 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 318 flow [2023-08-24 13:21:44,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=318, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-24 13:21:44,130 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-08-24 13:21:44,130 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 318 flow [2023-08-24 13:21:44,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-24 13:21:44,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:21:44,131 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] [2023-08-24 13:21:44,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 13:21:44,131 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)] === [2023-08-24 13:21:44,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:21:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1050195087, now seen corresponding path program 1 times [2023-08-24 13:21:44,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:21:44,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198768425] [2023-08-24 13:21:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:44,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:21:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:44,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:21:44,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198768425] [2023-08-24 13:21:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198768425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:21:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745071562] [2023-08-24 13:21:44,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:21:44,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:21:44,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:21:44,629 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) [2023-08-24 13:21:44,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 13:21:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:21:44,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 13:21:44,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:21:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:49,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:21:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:21:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745071562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:21:54,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:21:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 10 [2023-08-24 13:21:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861111009] [2023-08-24 13:21:54,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:21:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 13:21:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:21:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 13:21:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=98, Unknown=4, NotChecked=0, Total=132 [2023-08-24 13:21:54,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:21:54,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 318 flow. Second operand has 12 states, 12 states have (on average 88.91666666666667) internal successors, (1067), 12 states have internal predecessors, (1067), 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) [2023-08-24 13:21:54,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:21:54,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:21:54,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:21:59,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:09,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:20,470 WARN L234 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 32 DAG size of output: 25 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:22:23,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:25,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:27,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:29,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:31,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:33,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:35,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:37,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:39,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:42,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:43,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:45,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:47,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:49,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:51,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:52,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:54,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:57,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:22:59,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:02,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:04,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:06,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:08,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:10,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:13,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:14,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:16,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:19,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:22,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:25,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:27,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:29,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:32,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:34,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:36,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:39,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:41,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:43,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:45,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:48,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:50,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:51,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:53,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:55,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:23:58,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:24:01,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:24:02,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:24:07,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:24:09,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:24:09,767 INFO L124 PetriNetUnfolderBase]: 2985/4074 cut-off events. [2023-08-24 13:24:09,767 INFO L125 PetriNetUnfolderBase]: For 11320/11320 co-relation queries the response was YES. [2023-08-24 13:24:09,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17370 conditions, 4074 events. 2985/4074 cut-off events. For 11320/11320 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16542 event pairs, 453 based on Foata normal form. 3/4077 useless extension candidates. Maximal degree in co-relation 9836. Up to 2933 conditions per place. [2023-08-24 13:24:09,792 INFO L140 encePairwiseOnDemand]: 259/266 looper letters, 136 selfloop transitions, 32 changer transitions 6/174 dead transitions. [2023-08-24 13:24:09,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 174 transitions, 1214 flow [2023-08-24 13:24:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 13:24:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 13:24:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 913 transitions. [2023-08-24 13:24:09,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813700918964077 [2023-08-24 13:24:09,796 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 913 transitions. [2023-08-24 13:24:09,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 913 transitions. [2023-08-24 13:24:09,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:24:09,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 913 transitions. [2023-08-24 13:24:09,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.44444444444444) internal successors, (913), 9 states have internal predecessors, (913), 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) [2023-08-24 13:24:09,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 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) [2023-08-24 13:24:09,802 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 266.0) internal successors, (2660), 10 states have internal predecessors, (2660), 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) [2023-08-24 13:24:09,802 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 318 flow. Second operand 9 states and 913 transitions. [2023-08-24 13:24:09,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 174 transitions, 1214 flow [2023-08-24 13:24:09,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 174 transitions, 1193 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 13:24:09,817 INFO L231 Difference]: Finished difference. Result has 64 places, 72 transitions, 572 flow [2023-08-24 13:24:09,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=64, PETRI_TRANSITIONS=72} [2023-08-24 13:24:09,818 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2023-08-24 13:24:09,818 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 72 transitions, 572 flow [2023-08-24 13:24:09,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.91666666666667) internal successors, (1067), 12 states have internal predecessors, (1067), 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) [2023-08-24 13:24:09,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:24:09,819 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] [2023-08-24 13:24:09,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 13:24:10,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:24:10,020 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)] === [2023-08-24 13:24:10,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:24:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash -997153331, now seen corresponding path program 1 times [2023-08-24 13:24:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:24:10,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075883199] [2023-08-24 13:24:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:24:10,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:24:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:24:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:24:10,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:24:10,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075883199] [2023-08-24 13:24:10,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075883199] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:24:10,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946834103] [2023-08-24 13:24:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:24:10,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:24:10,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:24:10,615 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) [2023-08-24 13:24:10,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 13:25:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:25:34,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 13:25:34,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:25:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:25:45,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:25:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:25:50,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946834103] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:25:50,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:25:50,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 10 [2023-08-24 13:25:50,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672230374] [2023-08-24 13:25:50,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:25:50,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 13:25:50,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:25:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 13:25:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=92, Unknown=7, NotChecked=0, Total=132 [2023-08-24 13:25:50,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:25:50,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 572 flow. Second operand has 12 states, 12 states have (on average 89.41666666666667) internal successors, (1073), 12 states have internal predecessors, (1073), 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) [2023-08-24 13:25:50,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:25:50,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:25:50,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:26:02,425 WARN L234 SmtUtils]: Spent 11.11s on a formula simplification. DAG size of input: 71 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 13:26:05,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:06,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:09,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:12,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:14,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:22,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:24,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:26,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:30,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:34,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 13:26:37,679 INFO L124 PetriNetUnfolderBase]: 3663/4982 cut-off events. [2023-08-24 13:26:37,680 INFO L125 PetriNetUnfolderBase]: For 16903/16903 co-relation queries the response was YES. [2023-08-24 13:26:37,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22651 conditions, 4982 events. 3663/4982 cut-off events. For 16903/16903 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20523 event pairs, 865 based on Foata normal form. 2/4984 useless extension candidates. Maximal degree in co-relation 20734. Up to 4112 conditions per place. [2023-08-24 13:26:37,705 INFO L140 encePairwiseOnDemand]: 260/266 looper letters, 125 selfloop transitions, 26 changer transitions 5/156 dead transitions. [2023-08-24 13:26:37,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 156 transitions, 1285 flow [2023-08-24 13:26:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 13:26:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 13:26:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 702 transitions. [2023-08-24 13:26:37,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3770139634801289 [2023-08-24 13:26:37,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 702 transitions. [2023-08-24 13:26:37,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 702 transitions. [2023-08-24 13:26:37,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:26:37,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 702 transitions. [2023-08-24 13:26:37,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 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) [2023-08-24 13:26:37,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 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) [2023-08-24 13:26:37,716 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 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) [2023-08-24 13:26:37,717 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 572 flow. Second operand 7 states and 702 transitions. [2023-08-24 13:26:37,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 156 transitions, 1285 flow [2023-08-24 13:26:37,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 156 transitions, 1220 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-24 13:26:37,746 INFO L231 Difference]: Finished difference. Result has 72 places, 89 transitions, 717 flow [2023-08-24 13:26:37,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=717, PETRI_PLACES=72, PETRI_TRANSITIONS=89} [2023-08-24 13:26:37,747 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2023-08-24 13:26:37,747 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 89 transitions, 717 flow [2023-08-24 13:26:37,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 89.41666666666667) internal successors, (1073), 12 states have internal predecessors, (1073), 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) [2023-08-24 13:26:37,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:26:37,748 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] [2023-08-24 13:26:37,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 13:26:37,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:26:37,964 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)] === [2023-08-24 13:26:37,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:26:37,964 INFO L85 PathProgramCache]: Analyzing trace with hash 817389477, now seen corresponding path program 2 times [2023-08-24 13:26:37,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:26:37,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640958727] [2023-08-24 13:26:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:26:37,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:26:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:26:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:26:38,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:26:38,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640958727] [2023-08-24 13:26:38,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640958727] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:26:38,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743339640] [2023-08-24 13:26:38,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:26:38,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:26:38,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:26:38,776 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) [2023-08-24 13:26:38,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-24 13:36:13,655 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 13:36:13,676 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 13:36:14,667 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 0 [2023-08-24 13:36:14,877 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-24 13:36:14,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-24 13:36:14,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 13:36:14,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-24 13:36:14,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-08-24 13:36:14,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724487408] [2023-08-24 13:36:14,887 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-24 13:36:14,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 13:36:14,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:36:14,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 13:36:14,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 13:36:14,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 266 [2023-08-24 13:36:14,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 89 transitions, 717 flow. Second operand has 7 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 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) [2023-08-24 13:36:14,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:36:14,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 266 [2023-08-24 13:36:14,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:36:14,891 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 13:36:14,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 13:36:14,891 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 13:36:14,892 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-24 13:36:14,892 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 13:36:14,893 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 13:36:14,893 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 13:36:14,893 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2023-08-24 13:36:14,895 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 13:36:14,895 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 13:36:14,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:36:14 BasicIcfg [2023-08-24 13:36:14,897 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 13:36:14,898 INFO L158 Benchmark]: Toolchain (without parser) took 879961.04ms. Allocated memory was 415.2MB in the beginning and 601.9MB in the end (delta: 186.6MB). Free memory was 390.9MB in the beginning and 482.6MB in the end (delta: -91.7MB). Peak memory consumption was 98.1MB. Max. memory is 16.0GB. [2023-08-24 13:36:14,898 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 415.2MB. Free memory was 391.7MB in the beginning and 391.3MB in the end (delta: 328.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 13:36:14,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.75ms. Allocated memory is still 415.2MB. Free memory was 390.0MB in the beginning and 378.6MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 13:36:14,898 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.11ms. Allocated memory is still 415.2MB. Free memory was 378.6MB in the beginning and 377.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:36:14,898 INFO L158 Benchmark]: Boogie Preprocessor took 38.86ms. Allocated memory is still 415.2MB. Free memory was 377.3MB in the beginning and 375.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:36:14,899 INFO L158 Benchmark]: RCFGBuilder took 490.92ms. Allocated memory is still 415.2MB. Free memory was 375.3MB in the beginning and 359.4MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 13:36:14,899 INFO L158 Benchmark]: TraceAbstraction took 879179.78ms. Allocated memory was 415.2MB in the beginning and 601.9MB in the end (delta: 186.6MB). Free memory was 358.5MB in the beginning and 482.6MB in the end (delta: -124.1MB). Peak memory consumption was 64.5MB. Max. memory is 16.0GB. [2023-08-24 13:36:14,900 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 415.2MB. Free memory was 391.7MB in the beginning and 391.3MB in the end (delta: 328.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 217.75ms. Allocated memory is still 415.2MB. Free memory was 390.0MB in the beginning and 378.6MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.11ms. Allocated memory is still 415.2MB. Free memory was 378.6MB in the beginning and 377.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.86ms. Allocated memory is still 415.2MB. Free memory was 377.3MB in the beginning and 375.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 490.92ms. Allocated memory is still 415.2MB. Free memory was 375.3MB in the beginning and 359.4MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 879179.78ms. Allocated memory was 415.2MB in the beginning and 601.9MB in the end (delta: 186.6MB). Free memory was 358.5MB in the beginning and 482.6MB in the end (delta: -124.1MB). Peak memory consumption was 64.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 134 PlacesBefore, 34 PlacesAfterwards, 131 TransitionsBefore, 25 TransitionsAfterwards, 3312 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 119 TotalNumberOfCompositions, 2977 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2977, independent: 2977, independent conditional: 0, independent unconditional: 2977, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1766, independent: 1766, independent conditional: 0, independent unconditional: 1766, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2977, independent: 1211, independent conditional: 0, independent unconditional: 1211, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1766, unknown conditional: 0, unknown unconditional: 1766] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 186 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 879.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 184.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 46 mSolverCounterUnknown, 422 SdHoareTripleChecker+Valid, 148.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 422 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 147.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1765 IncrementalHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 1765 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 158 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 59.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=717occurred in iteration=9, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 84.2s SatisfiabilityAnalysisTime, 29.5s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 384 ConstructedInterpolants, 0 QuantifiedInterpolants, 13057 SizeOfPredicates, 16 NumberOfNonLiveVariables, 806 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 5/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown