/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 00:15:05,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 00:15:05,804 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 00:15:05,808 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 00:15:05,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 00:15:05,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 00:15:05,828 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 00:15:05,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 00:15:05,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 00:15:05,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 00:15:05,830 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 00:15:05,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 00:15:05,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 00:15:05,831 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 00:15:05,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 00:15:05,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 00:15:05,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 00:15:05,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 00:15:05,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 00:15:05,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 00:15:05,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 00:15:05,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 00:15:05,834 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 00:15:05,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 00:15:05,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 00:15:05,835 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 00:15:05,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 00:15:05,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:15:05,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 00:15:05,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 00:15:05,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 00:15:05,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 00:15:05,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 00:15:05,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 00:15:05,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 00:15:05,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 00:15:06,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 00:15:06,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 00:15:06,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 00:15:06,245 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 00:15:06,246 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 00:15:06,247 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-24 00:15:07,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 00:15:07,772 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 00:15:07,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i [2023-08-24 00:15:07,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1f2902f/434db84e610047f29518c9012985afbe/FLAGcceb23348 [2023-08-24 00:15:07,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a1f2902f/434db84e610047f29518c9012985afbe [2023-08-24 00:15:07,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 00:15:07,819 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 00:15:07,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 00:15:07,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 00:15:07,823 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 00:15:07,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:15:07" (1/1) ... [2023-08-24 00:15:07,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164b8c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:07, skipping insertion in model container [2023-08-24 00:15:07,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:15:07" (1/1) ... [2023-08-24 00:15:07,876 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 00:15:08,243 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2023-08-24 00:15:08,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:15:08,313 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 00:15:08,337 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 00:15:08,339 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 00:15:08,360 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_83-list2_racing1.i[47038,47051] [2023-08-24 00:15:08,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:15:08,457 INFO L206 MainTranslator]: Completed translation [2023-08-24 00:15:08,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08 WrapperNode [2023-08-24 00:15:08,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 00:15:08,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 00:15:08,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 00:15:08,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 00:15:08,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,536 INFO L138 Inliner]: procedures = 279, calls = 86, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 350 [2023-08-24 00:15:08,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 00:15:08,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 00:15:08,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 00:15:08,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 00:15:08,548 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 00:15:08,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 00:15:08,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 00:15:08,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 00:15:08,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (1/1) ... [2023-08-24 00:15:08,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:15:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:15:08,634 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 00:15:08,647 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 00:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 00:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 00:15:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-24 00:15:08,675 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-24 00:15:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 00:15:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 00:15:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 00:15:08,676 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 00:15:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 00:15:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 00:15:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 00:15:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 00:15:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 00:15:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-24 00:15:08,678 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-24 00:15:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 00:15:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 00:15:08,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 00:15:08,680 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 00:15:08,874 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 00:15:08,877 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 00:15:09,371 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 00:15:09,386 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 00:15:09,386 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-24 00:15:09,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:15:09 BoogieIcfgContainer [2023-08-24 00:15:09,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 00:15:09,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 00:15:09,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 00:15:09,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 00:15:09,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:15:07" (1/3) ... [2023-08-24 00:15:09,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4195d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:15:09, skipping insertion in model container [2023-08-24 00:15:09,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:15:08" (2/3) ... [2023-08-24 00:15:09,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4195d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:15:09, skipping insertion in model container [2023-08-24 00:15:09,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:15:09" (3/3) ... [2023-08-24 00:15:09,398 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2023-08-24 00:15:09,413 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 00:15:09,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 00:15:09,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 00:15:09,572 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-24 00:15:09,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 356 transitions, 754 flow [2023-08-24 00:15:09,947 INFO L124 PetriNetUnfolderBase]: 164/1109 cut-off events. [2023-08-24 00:15:09,947 INFO L125 PetriNetUnfolderBase]: For 36/57 co-relation queries the response was YES. [2023-08-24 00:15:09,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 1109 events. 164/1109 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7042 event pairs, 0 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 576. Up to 16 conditions per place. [2023-08-24 00:15:09,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 356 transitions, 754 flow [2023-08-24 00:15:09,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 356 transitions, 754 flow [2023-08-24 00:15:09,996 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:15:10,010 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 356 transitions, 754 flow [2023-08-24 00:15:10,017 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 356 transitions, 754 flow [2023-08-24 00:15:10,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 356 transitions, 754 flow [2023-08-24 00:15:10,204 INFO L124 PetriNetUnfolderBase]: 164/1109 cut-off events. [2023-08-24 00:15:10,204 INFO L125 PetriNetUnfolderBase]: For 36/57 co-relation queries the response was YES. [2023-08-24 00:15:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 1109 events. 164/1109 cut-off events. For 36/57 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7042 event pairs, 0 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 576. Up to 16 conditions per place. [2023-08-24 00:15:10,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 53084 [2023-08-24 00:15:25,834 INFO L134 LiptonReduction]: Checked pairs total: 100314 [2023-08-24 00:15:25,835 INFO L136 LiptonReduction]: Total number of compositions: 285 [2023-08-24 00:15:25,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:15:25,852 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;@ff8d8b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:15:25,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-24 00:15:25,859 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:15:25,859 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2023-08-24 00:15:25,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 00:15:25,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:15:25,860 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 00:15:25,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:15:25,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:15:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1571171097, now seen corresponding path program 1 times [2023-08-24 00:15:25,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:15:25,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818876955] [2023-08-24 00:15:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:15:25,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:15:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 00:15:26,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 00:15:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 00:15:26,150 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 00:15:26,152 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 00:15:26,154 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-24 00:15:26,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-24 00:15:26,155 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-24 00:15:26,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-24 00:15:26,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-24 00:15:26,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-24 00:15:26,156 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-24 00:15:26,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 00:15:26,157 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 00:15:26,163 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 00:15:26,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 00:15:26,273 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-24 00:15:26,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 571 transitions, 1232 flow [2023-08-24 00:15:28,041 INFO L124 PetriNetUnfolderBase]: 1130/5714 cut-off events. [2023-08-24 00:15:28,042 INFO L125 PetriNetUnfolderBase]: For 602/680 co-relation queries the response was YES. [2023-08-24 00:15:28,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 5714 events. 1130/5714 cut-off events. For 602/680 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 52819 event pairs, 22 based on Foata normal form. 0/4868 useless extension candidates. Maximal degree in co-relation 3562. Up to 192 conditions per place. [2023-08-24 00:15:28,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 500 places, 571 transitions, 1232 flow [2023-08-24 00:15:28,307 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 571 transitions, 1232 flow [2023-08-24 00:15:28,308 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:15:28,308 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 571 transitions, 1232 flow [2023-08-24 00:15:28,308 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 571 transitions, 1232 flow [2023-08-24 00:15:28,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 571 transitions, 1232 flow [2023-08-24 00:15:29,927 INFO L124 PetriNetUnfolderBase]: 1130/5714 cut-off events. [2023-08-24 00:15:29,928 INFO L125 PetriNetUnfolderBase]: For 602/680 co-relation queries the response was YES. [2023-08-24 00:15:30,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 5714 events. 1130/5714 cut-off events. For 602/680 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 52819 event pairs, 22 based on Foata normal form. 0/4868 useless extension candidates. Maximal degree in co-relation 3562. Up to 192 conditions per place. [2023-08-24 00:15:30,451 INFO L119 LiptonReduction]: Number of co-enabled transitions 196868 [2023-08-24 00:15:50,386 INFO L134 LiptonReduction]: Checked pairs total: 459948 [2023-08-24 00:15:50,387 INFO L136 LiptonReduction]: Total number of compositions: 437 [2023-08-24 00:15:50,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:15:50,396 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;@ff8d8b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:15:50,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-24 00:15:50,404 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:15:50,405 INFO L124 PetriNetUnfolderBase]: 16/121 cut-off events. [2023-08-24 00:15:50,405 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-24 00:15:50,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:15:50,405 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 00:15:50,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-24 00:15:50,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:15:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1211024767, now seen corresponding path program 1 times [2023-08-24 00:15:50,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:15:50,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597422750] [2023-08-24 00:15:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:15:50,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:15:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 00:15:50,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 00:15:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 00:15:50,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 00:15:50,531 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 00:15:50,532 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-08-24 00:15:50,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-24 00:15:50,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-24 00:15:50,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2023-08-24 00:15:50,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-24 00:15:50,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-24 00:15:50,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-24 00:15:50,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-24 00:15:50,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-24 00:15:50,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 00:15:50,533 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 00:15:50,534 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 00:15:50,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 00:15:50,606 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-08-24 00:15:50,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 682 places, 786 transitions, 1716 flow [2023-08-24 00:16:05,614 INFO L124 PetriNetUnfolderBase]: 8984/32867 cut-off events. [2023-08-24 00:16:05,614 INFO L125 PetriNetUnfolderBase]: For 7059/7242 co-relation queries the response was YES. [2023-08-24 00:16:07,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40041 conditions, 32867 events. 8984/32867 cut-off events. For 7059/7242 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 368038 event pairs, 912 based on Foata normal form. 0/28667 useless extension candidates. Maximal degree in co-relation 20934. Up to 2304 conditions per place. [2023-08-24 00:16:07,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 682 places, 786 transitions, 1716 flow [2023-08-24 00:16:08,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 682 places, 786 transitions, 1716 flow [2023-08-24 00:16:08,142 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:16:08,142 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 682 places, 786 transitions, 1716 flow [2023-08-24 00:16:08,142 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 682 places, 786 transitions, 1716 flow [2023-08-24 00:16:08,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 682 places, 786 transitions, 1716 flow [2023-08-24 00:16:21,550 INFO L124 PetriNetUnfolderBase]: 8984/32867 cut-off events. [2023-08-24 00:16:21,550 INFO L125 PetriNetUnfolderBase]: For 7059/7242 co-relation queries the response was YES. [2023-08-24 00:16:23,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40041 conditions, 32867 events. 8984/32867 cut-off events. For 7059/7242 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 368038 event pairs, 912 based on Foata normal form. 0/28667 useless extension candidates. Maximal degree in co-relation 20934. Up to 2304 conditions per place. [2023-08-24 00:16:26,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 431352 [2023-08-24 00:16:46,450 INFO L134 LiptonReduction]: Checked pairs total: 953587 [2023-08-24 00:16:46,451 INFO L136 LiptonReduction]: Total number of compositions: 602 [2023-08-24 00:16:46,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:16:46,453 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;@ff8d8b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:16:46,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-24 00:16:46,462 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:16:46,462 INFO L124 PetriNetUnfolderBase]: 11/112 cut-off events. [2023-08-24 00:16:46,462 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 00:16:46,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:46,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:16:46,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-24 00:16:46,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash 897691496, now seen corresponding path program 1 times [2023-08-24 00:16:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:46,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659050776] [2023-08-24 00:16:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:46,558 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 00:16:46,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:46,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659050776] [2023-08-24 00:16:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659050776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:16:46,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:16:46,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 00:16:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458459462] [2023-08-24 00:16:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:16:46,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 00:16:46,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:16:46,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 00:16:46,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 00:16:46,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 658 out of 1388 [2023-08-24 00:16:46,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 293 transitions, 730 flow. Second operand has 3 states, 3 states have (on average 661.3333333333334) internal successors, (1984), 3 states have internal predecessors, (1984), 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 00:16:46,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:16:46,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 658 of 1388 [2023-08-24 00:16:46,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand