/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:09:48,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:09:48,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:09:48,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:09:48,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:09:48,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:09:48,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:09:48,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:09:48,424 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:09:48,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:09:48,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:09:48,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:09:48,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:09:48,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:09:48,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:09:48,430 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:09:48,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:09:48,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:09:48,430 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:09:48,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:09:48,430 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:09:48,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:09:48,431 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:09:48,431 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:09:48,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:09:48,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:09:48,433 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:09:48,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:09:48,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:09:48,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:09:48,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:09:48,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:09:48,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:09:48,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:09:48,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:09:48,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:09:48,662 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:09:48,663 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:09:48,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c [2023-11-17 12:09:49,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:09:49,897 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:09:49,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c [2023-11-17 12:09:49,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8c4c8a6c/7a9a8ac097b9455d86265abe3422e09f/FLAG005ba5169 [2023-11-17 12:09:49,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8c4c8a6c/7a9a8ac097b9455d86265abe3422e09f [2023-11-17 12:09:49,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:09:49,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:09:49,923 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:09:49,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:09:49,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:09:49,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:09:49" (1/1) ... [2023-11-17 12:09:49,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@296f8b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:49, skipping insertion in model container [2023-11-17 12:09:49,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:09:49" (1/1) ... [2023-11-17 12:09:49,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:09:50,098 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c[4928,4941] [2023-11-17 12:09:50,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:09:50,113 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:09:50,145 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c[4928,4941] [2023-11-17 12:09:50,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:09:50,158 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:09:50,158 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:09:50,163 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:09:50,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50 WrapperNode [2023-11-17 12:09:50,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:09:50,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:09:50,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:09:50,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:09:50,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,203 INFO L138 Inliner]: procedures = 26, calls = 115, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 335 [2023-11-17 12:09:50,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:09:50,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:09:50,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:09:50,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:09:50,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,221 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,226 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:09:50,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:09:50,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:09:50,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:09:50,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (1/1) ... [2023-11-17 12:09:50,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:09:50,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:09:50,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:09:50,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:09:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:09:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:09:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:09:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:09:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:09:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:09:50,299 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:09:50,299 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:09:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:09:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:09:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:09:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:09:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:09:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-17 12:09:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-17 12:09:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-17 12:09:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-17 12:09:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-11-17 12:09:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-11-17 12:09:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:09:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:09:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:09:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:09:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:09:50,302 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:09:50,385 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:09:50,386 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:09:50,647 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:09:50,886 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:09:50,886 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 12:09:50,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:09:50 BoogieIcfgContainer [2023-11-17 12:09:50,888 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:09:50,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:09:50,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:09:50,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:09:50,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:09:49" (1/3) ... [2023-11-17 12:09:50,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be6b89a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:09:50, skipping insertion in model container [2023-11-17 12:09:50,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:09:50" (2/3) ... [2023-11-17 12:09:50,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be6b89a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:09:50, skipping insertion in model container [2023-11-17 12:09:50,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:09:50" (3/3) ... [2023-11-17 12:09:50,895 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-7.wvr.c [2023-11-17 12:09:50,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:09:50,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:09:50,906 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:09:50,966 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-11-17 12:09:50,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 81 transitions, 211 flow [2023-11-17 12:09:51,042 INFO L124 PetriNetUnfolderBase]: 0/74 cut-off events. [2023-11-17 12:09:51,042 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 12:09:51,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 74 events. 0/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 143 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:09:51,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 81 transitions, 211 flow [2023-11-17 12:09:51,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 73 transitions, 188 flow [2023-11-17 12:09:51,049 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:09:51,060 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 73 transitions, 188 flow [2023-11-17 12:09:51,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 73 transitions, 188 flow [2023-11-17 12:09:51,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 73 transitions, 188 flow [2023-11-17 12:09:51,094 INFO L124 PetriNetUnfolderBase]: 0/73 cut-off events. [2023-11-17 12:09:51,095 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 12:09:51,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 73 events. 0/73 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 142 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:09:51,096 INFO L119 LiptonReduction]: Number of co-enabled transitions 2702 [2023-11-17 12:09:52,150 INFO L134 LiptonReduction]: Checked pairs total: 5154 [2023-11-17 12:09:52,150 INFO L136 LiptonReduction]: Total number of compositions: 29 [2023-11-17 12:09:52,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:09:52,171 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d074cc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:09:52,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-17 12:09:52,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:09:52,183 INFO L124 PetriNetUnfolderBase]: 0/43 cut-off events. [2023-11-17 12:09:52,183 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 12:09:52,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:09:52,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:09:52,184 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 5 more)] === [2023-11-17 12:09:52,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:09:52,188 INFO L85 PathProgramCache]: Analyzing trace with hash 446422003, now seen corresponding path program 1 times [2023-11-17 12:09:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:09:52,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893955039] [2023-11-17 12:09:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:09:52,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:09:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:09:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:09:53,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:09:53,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893955039] [2023-11-17 12:09:53,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893955039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:09:53,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:09:53,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:09:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999305545] [2023-11-17 12:09:53,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:09:53,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:09:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:09:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:09:54,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:09:54,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 110 [2023-11-17 12:09:54,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:09:54,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:09:54,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 110 [2023-11-17 12:09:54,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:02,070 INFO L124 PetriNetUnfolderBase]: 65069/81921 cut-off events. [2023-11-17 12:10:02,071 INFO L125 PetriNetUnfolderBase]: For 5413/5413 co-relation queries the response was YES. [2023-11-17 12:10:02,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170091 conditions, 81921 events. 65069/81921 cut-off events. For 5413/5413 co-relation queries the response was YES. Maximal size of possible extension queue 1929. Compared 400006 event pairs, 13085 based on Foata normal form. 1/81922 useless extension candidates. Maximal degree in co-relation 133606. Up to 34969 conditions per place. [2023-11-17 12:10:02,575 INFO L140 encePairwiseOnDemand]: 100/110 looper letters, 102 selfloop transitions, 15 changer transitions 37/154 dead transitions. [2023-11-17 12:10:02,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 154 transitions, 742 flow [2023-11-17 12:10:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:10:02,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:10:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2023-11-17 12:10:02,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2023-11-17 12:10:02,589 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 245 transitions. [2023-11-17 12:10:02,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 245 transitions. [2023-11-17 12:10:02,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:02,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 245 transitions. [2023-11-17 12:10:02,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 40.833333333333336) internal successors, (245), 6 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:02,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:02,600 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:02,602 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 130 flow. Second operand 6 states and 245 transitions. [2023-11-17 12:10:02,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 154 transitions, 742 flow [2023-11-17 12:10:02,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 154 transitions, 658 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-17 12:10:02,757 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 201 flow [2023-11-17 12:10:02,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-11-17 12:10:02,762 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2023-11-17 12:10:02,763 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 201 flow [2023-11-17 12:10:02,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:02,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:02,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:02,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:10:02,764 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 5 more)] === [2023-11-17 12:10:02,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:02,770 INFO L85 PathProgramCache]: Analyzing trace with hash -107913081, now seen corresponding path program 2 times [2023-11-17 12:10:02,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:02,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213459445] [2023-11-17 12:10:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:02,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:10:03,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213459445] [2023-11-17 12:10:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213459445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:10:03,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632758131] [2023-11-17 12:10:03,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:10:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:03,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:10:03,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:10:03,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 110 [2023-11-17 12:10:03,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:03,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:03,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 110 [2023-11-17 12:10:03,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:09,369 INFO L124 PetriNetUnfolderBase]: 63137/79989 cut-off events. [2023-11-17 12:10:09,369 INFO L125 PetriNetUnfolderBase]: For 26505/26505 co-relation queries the response was YES. [2023-11-17 12:10:09,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227495 conditions, 79989 events. 63137/79989 cut-off events. For 26505/26505 co-relation queries the response was YES. Maximal size of possible extension queue 1991. Compared 399473 event pairs, 12271 based on Foata normal form. 1/79990 useless extension candidates. Maximal degree in co-relation 227486. Up to 37560 conditions per place. [2023-11-17 12:10:09,679 INFO L140 encePairwiseOnDemand]: 100/110 looper letters, 119 selfloop transitions, 21 changer transitions 22/162 dead transitions. [2023-11-17 12:10:09,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 838 flow [2023-11-17 12:10:09,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:10:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:10:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2023-11-17 12:10:09,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37424242424242427 [2023-11-17 12:10:09,682 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 247 transitions. [2023-11-17 12:10:09,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 247 transitions. [2023-11-17 12:10:09,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:09,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 247 transitions. [2023-11-17 12:10:09,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:09,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:09,684 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 110.0) internal successors, (770), 7 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:09,684 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 201 flow. Second operand 6 states and 247 transitions. [2023-11-17 12:10:09,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 838 flow [2023-11-17 12:10:09,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 162 transitions, 828 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 12:10:09,700 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 319 flow [2023-11-17 12:10:09,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-11-17 12:10:09,717 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2023-11-17 12:10:09,717 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 319 flow [2023-11-17 12:10:09,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:09,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:09,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:09,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:10:09,718 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 5 more)] === [2023-11-17 12:10:09,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash 558520727, now seen corresponding path program 3 times [2023-11-17 12:10:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:09,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599617297] [2023-11-17 12:10:09,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:09,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:10:09,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599617297] [2023-11-17 12:10:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599617297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:09,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:10:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949040886] [2023-11-17 12:10:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:10:09,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:10:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:10:09,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 110 [2023-11-17 12:10:09,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 319 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:09,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:09,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 110 [2023-11-17 12:10:09,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:22,359 INFO L124 PetriNetUnfolderBase]: 124606/158277 cut-off events. [2023-11-17 12:10:22,359 INFO L125 PetriNetUnfolderBase]: For 419087/419087 co-relation queries the response was YES. [2023-11-17 12:10:22,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577789 conditions, 158277 events. 124606/158277 cut-off events. For 419087/419087 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 880304 event pairs, 25118 based on Foata normal form. 3016/161293 useless extension candidates. Maximal degree in co-relation 294817. Up to 65307 conditions per place. [2023-11-17 12:10:23,150 INFO L140 encePairwiseOnDemand]: 95/110 looper letters, 125 selfloop transitions, 68 changer transitions 0/193 dead transitions. [2023-11-17 12:10:23,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 1303 flow [2023-11-17 12:10:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:10:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:10:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 262 transitions. [2023-11-17 12:10:23,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763636363636364 [2023-11-17 12:10:23,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 262 transitions. [2023-11-17 12:10:23,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 262 transitions. [2023-11-17 12:10:23,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:23,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 262 transitions. [2023-11-17 12:10:23,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:23,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:23,155 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:23,155 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 319 flow. Second operand 5 states and 262 transitions. [2023-11-17 12:10:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 1303 flow [2023-11-17 12:10:23,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 193 transitions, 1091 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-11-17 12:10:23,327 INFO L231 Difference]: Finished difference. Result has 64 places, 118 transitions, 757 flow [2023-11-17 12:10:23,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=757, PETRI_PLACES=64, PETRI_TRANSITIONS=118} [2023-11-17 12:10:23,328 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -2 predicate places. [2023-11-17 12:10:23,328 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 118 transitions, 757 flow [2023-11-17 12:10:23,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:23,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:23,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:23,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:10:23,329 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 5 more)] === [2023-11-17 12:10:23,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash -473026005, now seen corresponding path program 4 times [2023-11-17 12:10:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:23,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631867681] [2023-11-17 12:10:23,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:23,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:10:23,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:23,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631867681] [2023-11-17 12:10:23,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631867681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:23,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:23,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:10:23,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123681080] [2023-11-17 12:10:23,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:23,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:10:23,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:23,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:10:23,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:10:23,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 110 [2023-11-17 12:10:23,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 118 transitions, 757 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:23,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:23,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 110 [2023-11-17 12:10:23,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:10:36,332 INFO L124 PetriNetUnfolderBase]: 133651/170124 cut-off events. [2023-11-17 12:10:36,332 INFO L125 PetriNetUnfolderBase]: For 448110/448110 co-relation queries the response was YES. [2023-11-17 12:10:36,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720215 conditions, 170124 events. 133651/170124 cut-off events. For 448110/448110 co-relation queries the response was YES. Maximal size of possible extension queue 5200. Compared 964544 event pairs, 26029 based on Foata normal form. 2898/173022 useless extension candidates. Maximal degree in co-relation 158580. Up to 81975 conditions per place. [2023-11-17 12:10:37,268 INFO L140 encePairwiseOnDemand]: 95/110 looper letters, 121 selfloop transitions, 106 changer transitions 0/227 dead transitions. [2023-11-17 12:10:37,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 227 transitions, 1731 flow [2023-11-17 12:10:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:10:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:10:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 258 transitions. [2023-11-17 12:10:37,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4690909090909091 [2023-11-17 12:10:37,270 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 258 transitions. [2023-11-17 12:10:37,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 258 transitions. [2023-11-17 12:10:37,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:10:37,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 258 transitions. [2023-11-17 12:10:37,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:37,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:37,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:37,272 INFO L175 Difference]: Start difference. First operand has 64 places, 118 transitions, 757 flow. Second operand 5 states and 258 transitions. [2023-11-17 12:10:37,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 227 transitions, 1731 flow [2023-11-17 12:10:38,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 227 transitions, 1691 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-11-17 12:10:38,164 INFO L231 Difference]: Finished difference. Result has 69 places, 157 transitions, 1304 flow [2023-11-17 12:10:38,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1304, PETRI_PLACES=69, PETRI_TRANSITIONS=157} [2023-11-17 12:10:38,164 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-11-17 12:10:38,164 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 157 transitions, 1304 flow [2023-11-17 12:10:38,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:38,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:10:38,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:10:38,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:10:38,165 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 5 more)] === [2023-11-17 12:10:38,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:10:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1440208727, now seen corresponding path program 5 times [2023-11-17 12:10:38,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:10:38,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244799037] [2023-11-17 12:10:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:10:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:10:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:10:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:10:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:10:38,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244799037] [2023-11-17 12:10:38,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244799037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:10:38,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:10:38,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:10:38,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781946194] [2023-11-17 12:10:38,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:10:38,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:10:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:10:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:10:38,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:10:38,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 110 [2023-11-17 12:10:38,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 157 transitions, 1304 flow. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:10:38,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:10:38,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 110 [2023-11-17 12:10:38,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand