/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:51:10,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:51:10,172 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 [2023-08-26 22:51:10,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:51:10,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:51:10,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:51:10,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:51:10,201 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:51:10,202 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:51:10,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:51:10,202 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:51:10,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:51:10,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:51:10,203 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:51:10,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:51:10,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:51:10,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:51:10,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:51:10,205 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:51:10,205 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:51:10,206 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:51:10,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:51:10,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:51:10,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:51:10,214 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:51:10,214 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:51:10,214 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:51:10,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:51:10,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:51:10,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:51:10,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:51:10,216 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:51:10,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:51:10,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:51:10,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:51:10,217 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:51:10,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:51:10,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:51:10,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:51:10,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:51:10,545 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:51:10,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-26 22:51:11,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:51:11,916 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:51:11,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_85-list2_racefree.i [2023-08-26 22:51:11,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be775c799/2e70fd93b13042499a444e0fedc3d92a/FLAGd645b8f20 [2023-08-26 22:51:11,951 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be775c799/2e70fd93b13042499a444e0fedc3d92a [2023-08-26 22:51:11,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:51:11,954 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:51:11,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:51:11,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:51:11,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:51:11,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:51:11" (1/1) ... [2023-08-26 22:51:11,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4cbc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:11, skipping insertion in model container [2023-08-26 22:51:11,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:51:11" (1/1) ... [2023-08-26 22:51:12,004 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:51:12,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:51:12,494 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:51:12,519 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 22:51:12,520 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-26 22:51:12,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:51:12,642 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:51:12,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12 WrapperNode [2023-08-26 22:51:12,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:51:12,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:51:12,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:51:12,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:51:12,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,680 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,734 INFO L138 Inliner]: procedures = 279, calls = 87, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 376 [2023-08-26 22:51:12,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:51:12,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:51:12,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:51:12,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:51:12,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:51:12,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:51:12,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:51:12,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:51:12,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (1/1) ... [2023-08-26 22:51:12,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:51:12,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:51:12,835 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) [2023-08-26 22:51:12,858 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 [2023-08-26 22:51:12,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:51:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-26 22:51:12,872 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-26 22:51:12,872 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-26 22:51:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:51:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:51:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-26 22:51:12,873 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-26 22:51:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:51:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:51:12,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 22:51:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:51:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 22:51:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-26 22:51:12,874 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-26 22:51:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:51:12,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:51:12,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:51:12,877 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:51:13,069 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:51:13,072 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:51:13,563 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:51:13,572 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:51:13,572 INFO L302 CfgBuilder]: Removed 28 assume(true) statements. [2023-08-26 22:51:13,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:51:13 BoogieIcfgContainer [2023-08-26 22:51:13,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:51:13,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:51:13,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:51:13,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:51:13,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:51:11" (1/3) ... [2023-08-26 22:51:13,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42005b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:51:13, skipping insertion in model container [2023-08-26 22:51:13,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:51:12" (2/3) ... [2023-08-26 22:51:13,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42005b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:51:13, skipping insertion in model container [2023-08-26 22:51:13,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:51:13" (3/3) ... [2023-08-26 22:51:13,580 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_85-list2_racefree.i [2023-08-26 22:51:13,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:51:13,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-26 22:51:13,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:51:13,698 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 22:51:13,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 404 transitions, 850 flow [2023-08-26 22:51:14,105 INFO L124 PetriNetUnfolderBase]: 170/1293 cut-off events. [2023-08-26 22:51:14,106 INFO L125 PetriNetUnfolderBase]: For 36/55 co-relation queries the response was YES. [2023-08-26 22:51:14,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 1293 events. 170/1293 cut-off events. For 36/55 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8451 event pairs, 0 based on Foata normal form. 0/1035 useless extension candidates. Maximal degree in co-relation 660. Up to 16 conditions per place. [2023-08-26 22:51:14,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 364 places, 404 transitions, 850 flow [2023-08-26 22:51:14,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 404 transitions, 850 flow [2023-08-26 22:51:14,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:51:14,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 404 transitions, 850 flow [2023-08-26 22:51:14,171 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 404 transitions, 850 flow [2023-08-26 22:51:14,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 404 transitions, 850 flow [2023-08-26 22:51:14,409 INFO L124 PetriNetUnfolderBase]: 170/1293 cut-off events. [2023-08-26 22:51:14,412 INFO L125 PetriNetUnfolderBase]: For 36/55 co-relation queries the response was YES. [2023-08-26 22:51:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 1293 events. 170/1293 cut-off events. For 36/55 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8451 event pairs, 0 based on Foata normal form. 0/1035 useless extension candidates. Maximal degree in co-relation 660. Up to 16 conditions per place. [2023-08-26 22:51:14,485 INFO L119 LiptonReduction]: Number of co-enabled transitions 70556 [2023-08-26 22:51:28,590 INFO L134 LiptonReduction]: Checked pairs total: 136403 [2023-08-26 22:51:28,590 INFO L136 LiptonReduction]: Total number of compositions: 352 [2023-08-26 22:51:28,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:51:28,605 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;@47b5119c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:51:28,606 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-26 22:51:28,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:51:28,609 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:51:28,609 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:51:28,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:51:28,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:51:28,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-26 22:51:28,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:51:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash 49036447, now seen corresponding path program 1 times [2023-08-26 22:51:28,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:51:28,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931515382] [2023-08-26 22:51:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:51:28,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:51:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:51:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:51:28,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:51:28,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931515382] [2023-08-26 22:51:28,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931515382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:51:28,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:51:28,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:51:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228299060] [2023-08-26 22:51:28,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:51:28,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:51:28,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:51:29,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:51:29,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:51:29,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 756 [2023-08-26 22:51:29,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 134 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 351.3333333333333) internal successors, (1054), 3 states have internal predecessors, (1054), 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) [2023-08-26 22:51:29,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:51:29,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 756 [2023-08-26 22:51:29,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:51:45,956 INFO L124 PetriNetUnfolderBase]: 178076/257435 cut-off events. [2023-08-26 22:51:45,956 INFO L125 PetriNetUnfolderBase]: For 6384/6384 co-relation queries the response was YES. [2023-08-26 22:51:46,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499290 conditions, 257435 events. 178076/257435 cut-off events. For 6384/6384 co-relation queries the response was YES. Maximal size of possible extension queue 7132. Compared 2071460 event pairs, 113920 based on Foata normal form. 29176/214670 useless extension candidates. Maximal degree in co-relation 442579. Up to 238759 conditions per place. [2023-08-26 22:51:47,500 INFO L140 encePairwiseOnDemand]: 728/756 looper letters, 98 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2023-08-26 22:51:47,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 117 transitions, 476 flow [2023-08-26 22:51:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:51:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:51:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1176 transitions. [2023-08-26 22:51:47,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2023-08-26 22:51:47,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1176 transitions. [2023-08-26 22:51:47,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1176 transitions. [2023-08-26 22:51:47,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:51:47,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1176 transitions. [2023-08-26 22:51:47,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 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) [2023-08-26 22:51:47,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 756.0) internal successors, (3024), 4 states have internal predecessors, (3024), 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) [2023-08-26 22:51:47,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 756.0) internal successors, (3024), 4 states have internal predecessors, (3024), 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) [2023-08-26 22:51:47,543 INFO L175 Difference]: Start difference. First operand has 105 places, 134 transitions, 310 flow. Second operand 3 states and 1176 transitions. [2023-08-26 22:51:47,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 117 transitions, 476 flow [2023-08-26 22:51:47,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:51:47,560 INFO L231 Difference]: Finished difference. Result has 106 places, 109 transitions, 268 flow [2023-08-26 22:51:47,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=756, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=106, PETRI_TRANSITIONS=109} [2023-08-26 22:51:47,566 INFO L281 CegarLoopForPetriNet]: 105 programPoint places, 1 predicate places. [2023-08-26 22:51:47,566 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 109 transitions, 268 flow [2023-08-26 22:51:47,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 351.3333333333333) internal successors, (1054), 3 states have internal predecessors, (1054), 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) [2023-08-26 22:51:47,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:51:47,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:51:47,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:51:47,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-26 22:51:47,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:51:47,570 INFO L85 PathProgramCache]: Analyzing trace with hash -120567635, now seen corresponding path program 1 times [2023-08-26 22:51:47,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:51:47,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236135723] [2023-08-26 22:51:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:51:47,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:51:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:51:47,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:51:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:51:47,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:51:47,704 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:51:47,705 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2023-08-26 22:51:47,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2023-08-26 22:51:47,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2023-08-26 22:51:47,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2023-08-26 22:51:47,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2023-08-26 22:51:47,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONASSERT (29 of 35 remaining) [2023-08-26 22:51:47,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2023-08-26 22:51:47,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2023-08-26 22:51:47,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2023-08-26 22:51:47,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2023-08-26 22:51:47,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4ASSERT_VIOLATIONASSERT (24 of 35 remaining) [2023-08-26 22:51:47,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2023-08-26 22:51:47,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2023-08-26 22:51:47,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2023-08-26 22:51:47,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2023-08-26 22:51:47,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2023-08-26 22:51:47,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2023-08-26 22:51:47,716 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2023-08-26 22:51:47,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2023-08-26 22:51:47,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2023-08-26 22:51:47,717 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2023-08-26 22:51:47,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2023-08-26 22:51:47,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2023-08-26 22:51:47,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 35 remaining) [2023-08-26 22:51:47,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 35 remaining) [2023-08-26 22:51:47,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2023-08-26 22:51:47,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2023-08-26 22:51:47,718 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2023-08-26 22:51:47,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2023-08-26 22:51:47,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONASSERT (5 of 35 remaining) [2023-08-26 22:51:47,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2023-08-26 22:51:47,719 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2023-08-26 22:51:47,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2023-08-26 22:51:47,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2023-08-26 22:51:47,720 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr4ASSERT_VIOLATIONASSERT (0 of 35 remaining) [2023-08-26 22:51:47,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:51:47,723 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:51:47,727 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:51:47,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:51:47,811 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-26 22:51:47,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 568 places, 643 transitions, 1376 flow [2023-08-26 22:51:49,471 INFO L124 PetriNetUnfolderBase]: 1154/6862 cut-off events. [2023-08-26 22:51:49,471 INFO L125 PetriNetUnfolderBase]: For 602/677 co-relation queries the response was YES. [2023-08-26 22:51:49,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 6862 events. 1154/6862 cut-off events. For 602/677 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 66385 event pairs, 22 based on Foata normal form. 0/5466 useless extension candidates. Maximal degree in co-relation 4194. Up to 192 conditions per place. [2023-08-26 22:51:49,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 568 places, 643 transitions, 1376 flow [2023-08-26 22:51:49,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 568 places, 643 transitions, 1376 flow [2023-08-26 22:51:49,706 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:51:49,706 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 568 places, 643 transitions, 1376 flow [2023-08-26 22:51:49,706 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 568 places, 643 transitions, 1376 flow [2023-08-26 22:51:49,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 568 places, 643 transitions, 1376 flow [2023-08-26 22:51:50,788 INFO L124 PetriNetUnfolderBase]: 1154/6862 cut-off events. [2023-08-26 22:51:50,789 INFO L125 PetriNetUnfolderBase]: For 602/677 co-relation queries the response was YES. [2023-08-26 22:51:50,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 6862 events. 1154/6862 cut-off events. For 602/677 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 66385 event pairs, 22 based on Foata normal form. 0/5466 useless extension candidates. Maximal degree in co-relation 4194. Up to 192 conditions per place. [2023-08-26 22:51:51,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 253412 [2023-08-26 22:52:08,921 INFO L134 LiptonReduction]: Checked pairs total: 530599 [2023-08-26 22:52:08,922 INFO L136 LiptonReduction]: Total number of compositions: 534 [2023-08-26 22:52:08,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:52:08,925 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;@47b5119c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:52:08,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-08-26 22:52:08,928 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:52:08,928 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-26 22:52:08,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:52:08,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:52:08,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:52:08,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 42 more)] === [2023-08-26 22:52:08,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:52:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1430410873, now seen corresponding path program 1 times [2023-08-26 22:52:08,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:52:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541355454] [2023-08-26 22:52:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:52:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:52:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:52:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:52:09,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:52:09,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541355454] [2023-08-26 22:52:09,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541355454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:52:09,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:52:09,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:52:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175299704] [2023-08-26 22:52:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:52:09,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:52:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:52:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:52:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:52:09,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 549 out of 1177 [2023-08-26 22:52:09,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 232 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 550.3333333333334) internal successors, (1651), 3 states have internal predecessors, (1651), 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) [2023-08-26 22:52:09,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:52:09,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 549 of 1177 [2023-08-26 22:52:09,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand