/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -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/weaver/parallel-parallel-sum-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:08:56,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:08:56,563 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 [2023-08-27 07:08:56,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:08:56,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:08:56,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:08:56,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:08:56,599 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:08:56,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:08:56,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:08:56,604 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:08:56,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:08:56,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:08:56,606 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:08:56,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:08:56,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:08:56,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:08:56,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:08:56,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:08:56,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:08:56,607 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:08:56,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:08:56,608 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:08:56,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:08:56,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:08:56,609 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:08:56,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:08:56,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:08:56,610 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:08:56,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:08:56,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:08:56,611 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:08:56,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:08:56,611 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:08:56,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:08:56,611 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:08:56,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:08:56,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:08:56,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:08:56,932 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:08:56,934 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:08:56,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-08-27 07:08:58,182 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:08:58,405 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:08:58,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-08-27 07:08:58,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/706d37283/0e7cc42d85374e358f5f0e781c8b3390/FLAG7476dbddf [2023-08-27 07:08:58,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/706d37283/0e7cc42d85374e358f5f0e781c8b3390 [2023-08-27 07:08:58,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:08:58,435 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:08:58,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:08:58,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:08:58,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:08:58,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8923062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58, skipping insertion in model container [2023-08-27 07:08:58,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,472 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:08:58,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:08:58,674 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:08:58,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:08:58,722 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:08:58,722 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:08:58,728 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:08:58,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58 WrapperNode [2023-08-27 07:08:58,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:08:58,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:08:58,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:08:58,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:08:58,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,755 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,793 INFO L138 Inliner]: procedures = 27, calls = 74, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 312 [2023-08-27 07:08:58,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:08:58,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:08:58,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:08:58,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:08:58,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:08:58,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:08:58,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:08:58,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:08:58,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (1/1) ... [2023-08-27 07:08:58,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:08:58,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:08:58,874 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) [2023-08-27 07:08:58,884 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 [2023-08-27 07:08:58,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:08:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:08:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:08:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:08:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:08:58,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:08:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:08:58,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:08:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:08:58,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:08:58,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 07:08:58,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 07:08:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:08:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:08:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:08:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 07:08:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:08:58,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:08:58,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:08:58,909 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 07:08:58,996 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:08:58,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:08:59,499 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:08:59,815 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:08:59,815 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 07:08:59,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:08:59 BoogieIcfgContainer [2023-08-27 07:08:59,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:08:59,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:08:59,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:08:59,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:08:59,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:08:58" (1/3) ... [2023-08-27 07:08:59,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcc287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:08:59, skipping insertion in model container [2023-08-27 07:08:59,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:08:58" (2/3) ... [2023-08-27 07:08:59,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcc287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:08:59, skipping insertion in model container [2023-08-27 07:08:59,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:08:59" (3/3) ... [2023-08-27 07:08:59,824 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-08-27 07:08:59,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:08:59,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-08-27 07:08:59,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:08:59,986 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-27 07:09:00,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 240 transitions, 524 flow [2023-08-27 07:09:00,110 INFO L124 PetriNetUnfolderBase]: 14/225 cut-off events. [2023-08-27 07:09:00,110 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 07:09:00,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 225 events. 14/225 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 326 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2023-08-27 07:09:00,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 240 transitions, 524 flow [2023-08-27 07:09:00,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 216 transitions, 462 flow [2023-08-27 07:09:00,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:09:00,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 216 transitions, 462 flow [2023-08-27 07:09:00,134 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 216 transitions, 462 flow [2023-08-27 07:09:00,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 216 transitions, 462 flow [2023-08-27 07:09:00,179 INFO L124 PetriNetUnfolderBase]: 14/216 cut-off events. [2023-08-27 07:09:00,179 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 07:09:00,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 216 events. 14/216 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 320 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 189. Up to 3 conditions per place. [2023-08-27 07:09:00,184 INFO L119 LiptonReduction]: Number of co-enabled transitions 5456 [2023-08-27 07:09:08,807 INFO L134 LiptonReduction]: Checked pairs total: 22116 [2023-08-27 07:09:08,807 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-08-27 07:09:08,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:09:08,825 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;@545ddb3e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:09:08,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-27 07:09:08,827 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:09:08,827 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 07:09:08,827 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:09:08,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:08,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 07:09:08,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:08,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1325, now seen corresponding path program 1 times [2023-08-27 07:09:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:08,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007713932] [2023-08-27 07:09:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:08,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:08,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:08,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007713932] [2023-08-27 07:09:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007713932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:08,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:08,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 07:09:08,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974962147] [2023-08-27 07:09:08,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:08,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 07:09:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 07:09:08,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 07:09:08,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 440 [2023-08-27 07:09:08,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 164 flow. Second operand has 2 states, 2 states have (on average 184.5) internal successors, (369), 2 states have internal predecessors, (369), 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) [2023-08-27 07:09:08,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:08,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 440 [2023-08-27 07:09:08,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:11,109 INFO L124 PetriNetUnfolderBase]: 11217/15501 cut-off events. [2023-08-27 07:09:11,110 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2023-08-27 07:09:11,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31806 conditions, 15501 events. 11217/15501 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 83445 event pairs, 9848 based on Foata normal form. 0/7001 useless extension candidates. Maximal degree in co-relation 31700. Up to 15102 conditions per place. [2023-08-27 07:09:11,226 INFO L140 encePairwiseOnDemand]: 432/440 looper letters, 50 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-08-27 07:09:11,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 248 flow [2023-08-27 07:09:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 07:09:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 07:09:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 426 transitions. [2023-08-27 07:09:11,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48409090909090907 [2023-08-27 07:09:11,243 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 426 transitions. [2023-08-27 07:09:11,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 426 transitions. [2023-08-27 07:09:11,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:11,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 426 transitions. [2023-08-27 07:09:11,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.0) internal successors, (426), 2 states have internal predecessors, (426), 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) [2023-08-27 07:09:11,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 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) [2023-08-27 07:09:11,253 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 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) [2023-08-27 07:09:11,255 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 164 flow. Second operand 2 states and 426 transitions. [2023-08-27 07:09:11,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 248 flow [2023-08-27 07:09:11,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 228 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 07:09:11,361 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 128 flow [2023-08-27 07:09:11,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-08-27 07:09:11,365 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -15 predicate places. [2023-08-27 07:09:11,365 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 128 flow [2023-08-27 07:09:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 184.5) internal successors, (369), 2 states have internal predecessors, (369), 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) [2023-08-27 07:09:11,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:11,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:09:11,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:09:11,366 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:11,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash 42323, now seen corresponding path program 1 times [2023-08-27 07:09:11,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:11,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066537127] [2023-08-27 07:09:11,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:11,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:11,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:11,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066537127] [2023-08-27 07:09:11,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066537127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:11,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:11,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:09:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886476724] [2023-08-27 07:09:11,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:11,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:09:11,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:09:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:09:11,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 440 [2023-08-27 07:09:11,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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) [2023-08-27 07:09:11,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:11,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 440 [2023-08-27 07:09:11,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:13,248 INFO L124 PetriNetUnfolderBase]: 11219/15504 cut-off events. [2023-08-27 07:09:13,249 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-08-27 07:09:13,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31005 conditions, 15504 events. 11219/15504 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 83514 event pairs, 9848 based on Foata normal form. 0/7002 useless extension candidates. Maximal degree in co-relation 31002. Up to 15102 conditions per place. [2023-08-27 07:09:13,328 INFO L140 encePairwiseOnDemand]: 435/440 looper letters, 49 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-27 07:09:13,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 240 flow [2023-08-27 07:09:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:09:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:09:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 582 transitions. [2023-08-27 07:09:13,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2023-08-27 07:09:13,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 582 transitions. [2023-08-27 07:09:13,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 582 transitions. [2023-08-27 07:09:13,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:13,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 582 transitions. [2023-08-27 07:09:13,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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) [2023-08-27 07:09:13,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:13,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:13,338 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 128 flow. Second operand 3 states and 582 transitions. [2023-08-27 07:09:13,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 240 flow [2023-08-27 07:09:13,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 07:09:13,340 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 158 flow [2023-08-27 07:09:13,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-08-27 07:09:13,341 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -11 predicate places. [2023-08-27 07:09:13,341 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 158 flow [2023-08-27 07:09:13,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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) [2023-08-27 07:09:13,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:13,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 07:09:13,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 07:09:13,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:13,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash 42325, now seen corresponding path program 1 times [2023-08-27 07:09:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:13,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947088197] [2023-08-27 07:09:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:13,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:13,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947088197] [2023-08-27 07:09:13,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947088197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:13,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:13,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:09:13,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661999165] [2023-08-27 07:09:13,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:13,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:09:13,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:13,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:09:13,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:09:13,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 440 [2023-08-27 07:09:13,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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) [2023-08-27 07:09:13,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:13,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 440 [2023-08-27 07:09:13,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:14,902 INFO L124 PetriNetUnfolderBase]: 11218/15502 cut-off events. [2023-08-27 07:09:14,902 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-08-27 07:09:14,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31012 conditions, 15502 events. 11218/15502 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 83460 event pairs, 9848 based on Foata normal form. 2/7004 useless extension candidates. Maximal degree in co-relation 31007. Up to 15099 conditions per place. [2023-08-27 07:09:14,972 INFO L140 encePairwiseOnDemand]: 437/440 looper letters, 48 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-27 07:09:14,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 250 flow [2023-08-27 07:09:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:09:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:09:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-27 07:09:14,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43787878787878787 [2023-08-27 07:09:14,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-27 07:09:14,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-27 07:09:14,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:14,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-27 07:09:14,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2023-08-27 07:09:14,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:14,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:14,980 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 158 flow. Second operand 3 states and 578 transitions. [2023-08-27 07:09:14,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 250 flow [2023-08-27 07:09:14,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 07:09:14,982 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 146 flow [2023-08-27 07:09:14,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-08-27 07:09:14,983 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -12 predicate places. [2023-08-27 07:09:14,983 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 146 flow [2023-08-27 07:09:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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) [2023-08-27 07:09:14,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:14,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:09:14,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 07:09:14,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:14,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:14,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1313323, now seen corresponding path program 1 times [2023-08-27 07:09:14,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:14,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395514961] [2023-08-27 07:09:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:14,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:15,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:15,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395514961] [2023-08-27 07:09:15,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395514961] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:09:15,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762016282] [2023-08-27 07:09:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:15,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:15,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:15,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:09:15,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 07:09:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:15,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:09:15,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:09:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:15,269 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:09:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:15,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762016282] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:09:15,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:09:15,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-27 07:09:15,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114592019] [2023-08-27 07:09:15,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:09:15,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 07:09:15,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:15,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 07:09:15,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:09:15,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 440 [2023-08-27 07:09:15,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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) [2023-08-27 07:09:15,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:15,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 440 [2023-08-27 07:09:15,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:16,688 INFO L124 PetriNetUnfolderBase]: 11221/15508 cut-off events. [2023-08-27 07:09:16,688 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2023-08-27 07:09:16,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31032 conditions, 15508 events. 11221/15508 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 83486 event pairs, 9848 based on Foata normal form. 0/7010 useless extension candidates. Maximal degree in co-relation 31027. Up to 15105 conditions per place. [2023-08-27 07:09:16,796 INFO L140 encePairwiseOnDemand]: 436/440 looper letters, 48 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2023-08-27 07:09:16,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 290 flow [2023-08-27 07:09:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:09:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:09:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1116 transitions. [2023-08-27 07:09:16,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2023-08-27 07:09:16,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1116 transitions. [2023-08-27 07:09:16,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1116 transitions. [2023-08-27 07:09:16,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:16,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1116 transitions. [2023-08-27 07:09:16,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 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) [2023-08-27 07:09:16,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 440.0) internal successors, (3080), 7 states have internal predecessors, (3080), 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) [2023-08-27 07:09:16,810 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 440.0) internal successors, (3080), 7 states have internal predecessors, (3080), 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) [2023-08-27 07:09:16,810 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 146 flow. Second operand 6 states and 1116 transitions. [2023-08-27 07:09:16,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 290 flow [2023-08-27 07:09:16,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:09:16,812 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 201 flow [2023-08-27 07:09:16,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=201, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-27 07:09:16,813 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2023-08-27 07:09:16,813 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 201 flow [2023-08-27 07:09:16,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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) [2023-08-27 07:09:16,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:16,814 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 07:09:16,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 07:09:17,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:17,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:17,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash 471800659, now seen corresponding path program 2 times [2023-08-27 07:09:17,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:17,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616016669] [2023-08-27 07:09:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:17,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:17,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:17,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616016669] [2023-08-27 07:09:17,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616016669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:09:17,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792990466] [2023-08-27 07:09:17,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:09:17,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:17,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:17,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:09:17,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 07:09:17,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 07:09:17,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:09:17,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 07:09:17,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:09:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 07:09:17,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:09:17,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792990466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:17,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:09:17,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 07:09:17,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863790614] [2023-08-27 07:09:17,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:17,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:09:17,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:17,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:09:17,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:09:17,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 440 [2023-08-27 07:09:17,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2023-08-27 07:09:17,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:17,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 440 [2023-08-27 07:09:17,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:18,657 INFO L124 PetriNetUnfolderBase]: 11221/15507 cut-off events. [2023-08-27 07:09:18,657 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-27 07:09:18,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31043 conditions, 15507 events. 11221/15507 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 83448 event pairs, 9848 based on Foata normal form. 1/7009 useless extension candidates. Maximal degree in co-relation 31035. Up to 15107 conditions per place. [2023-08-27 07:09:18,714 INFO L140 encePairwiseOnDemand]: 438/440 looper letters, 55 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-08-27 07:09:18,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 303 flow [2023-08-27 07:09:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:09:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:09:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-08-27 07:09:18,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2023-08-27 07:09:18,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-08-27 07:09:18,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-08-27 07:09:18,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:18,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-08-27 07:09:18,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 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) [2023-08-27 07:09:18,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:18,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:18,722 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 201 flow. Second operand 3 states and 580 transitions. [2023-08-27 07:09:18,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 303 flow [2023-08-27 07:09:18,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 266 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-27 07:09:18,723 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 156 flow [2023-08-27 07:09:18,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-27 07:09:18,724 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-08-27 07:09:18,724 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 156 flow [2023-08-27 07:09:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2023-08-27 07:09:18,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:18,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:18,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 07:09:18,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:18,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:18,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:18,930 INFO L85 PathProgramCache]: Analyzing trace with hash -932570388, now seen corresponding path program 1 times [2023-08-27 07:09:18,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:18,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371163496] [2023-08-27 07:09:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:18,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371163496] [2023-08-27 07:09:18,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371163496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:18,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:09:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173210227] [2023-08-27 07:09:18,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:18,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:09:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:09:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:09:18,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 440 [2023-08-27 07:09:18,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:09:18,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:18,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 440 [2023-08-27 07:09:19,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:20,195 INFO L124 PetriNetUnfolderBase]: 12123/16641 cut-off events. [2023-08-27 07:09:20,196 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-08-27 07:09:20,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33453 conditions, 16641 events. 12123/16641 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 90693 event pairs, 7203 based on Foata normal form. 0/7714 useless extension candidates. Maximal degree in co-relation 33448. Up to 15259 conditions per place. [2023-08-27 07:09:20,251 INFO L140 encePairwiseOnDemand]: 433/440 looper letters, 81 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-27 07:09:20,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 388 flow [2023-08-27 07:09:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:09:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:09:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-27 07:09:20,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47424242424242424 [2023-08-27 07:09:20,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-27 07:09:20,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-27 07:09:20,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:20,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-27 07:09:20,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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) [2023-08-27 07:09:20,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:20,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:20,259 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 156 flow. Second operand 3 states and 626 transitions. [2023-08-27 07:09:20,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 388 flow [2023-08-27 07:09:20,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:09:20,261 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 180 flow [2023-08-27 07:09:20,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-08-27 07:09:20,262 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-08-27 07:09:20,262 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 180 flow [2023-08-27 07:09:20,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:09:20,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:20,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:20,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 07:09:20,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:20,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1508550310, now seen corresponding path program 1 times [2023-08-27 07:09:20,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:20,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451214303] [2023-08-27 07:09:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:20,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451214303] [2023-08-27 07:09:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451214303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:20,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:20,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:09:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928555497] [2023-08-27 07:09:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:20,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:09:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:09:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:09:20,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 440 [2023-08-27 07:09:20,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 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) [2023-08-27 07:09:20,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:20,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 440 [2023-08-27 07:09:20,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:22,179 INFO L124 PetriNetUnfolderBase]: 15647/21862 cut-off events. [2023-08-27 07:09:22,179 INFO L125 PetriNetUnfolderBase]: For 1488/1488 co-relation queries the response was YES. [2023-08-27 07:09:22,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47397 conditions, 21862 events. 15647/21862 cut-off events. For 1488/1488 co-relation queries the response was YES. Maximal size of possible extension queue 1233. Compared 126386 event pairs, 11521 based on Foata normal form. 0/12423 useless extension candidates. Maximal degree in co-relation 47391. Up to 16348 conditions per place. [2023-08-27 07:09:22,259 INFO L140 encePairwiseOnDemand]: 427/440 looper letters, 123 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2023-08-27 07:09:22,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 136 transitions, 623 flow [2023-08-27 07:09:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:09:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:09:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 936 transitions. [2023-08-27 07:09:22,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254545454545455 [2023-08-27 07:09:22,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 936 transitions. [2023-08-27 07:09:22,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 936 transitions. [2023-08-27 07:09:22,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:22,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 936 transitions. [2023-08-27 07:09:22,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.2) internal successors, (936), 5 states have internal predecessors, (936), 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) [2023-08-27 07:09:22,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 440.0) internal successors, (2640), 6 states have internal predecessors, (2640), 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) [2023-08-27 07:09:22,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 440.0) internal successors, (2640), 6 states have internal predecessors, (2640), 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) [2023-08-27 07:09:22,271 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 180 flow. Second operand 5 states and 936 transitions. [2023-08-27 07:09:22,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 136 transitions, 623 flow [2023-08-27 07:09:22,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 136 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:09:22,274 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 214 flow [2023-08-27 07:09:22,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2023-08-27 07:09:22,275 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -3 predicate places. [2023-08-27 07:09:22,275 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 214 flow [2023-08-27 07:09:22,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 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) [2023-08-27 07:09:22,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:22,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:22,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:09:22,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:22,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1155090140, now seen corresponding path program 1 times [2023-08-27 07:09:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:22,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970726070] [2023-08-27 07:09:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:22,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970726070] [2023-08-27 07:09:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970726070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:22,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:22,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:09:22,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785592967] [2023-08-27 07:09:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:22,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:09:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:09:22,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:09:22,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 440 [2023-08-27 07:09:22,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 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) [2023-08-27 07:09:22,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:22,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 440 [2023-08-27 07:09:22,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:24,896 INFO L124 PetriNetUnfolderBase]: 21353/29428 cut-off events. [2023-08-27 07:09:24,896 INFO L125 PetriNetUnfolderBase]: For 9222/9253 co-relation queries the response was YES. [2023-08-27 07:09:24,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71068 conditions, 29428 events. 21353/29428 cut-off events. For 9222/9253 co-relation queries the response was YES. Maximal size of possible extension queue 1404. Compared 169563 event pairs, 13941 based on Foata normal form. 6/18141 useless extension candidates. Maximal degree in co-relation 71060. Up to 20315 conditions per place. [2023-08-27 07:09:25,043 INFO L140 encePairwiseOnDemand]: 433/440 looper letters, 95 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-08-27 07:09:25,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 107 transitions, 536 flow [2023-08-27 07:09:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:09:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:09:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 633 transitions. [2023-08-27 07:09:25,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47954545454545455 [2023-08-27 07:09:25,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 633 transitions. [2023-08-27 07:09:25,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 633 transitions. [2023-08-27 07:09:25,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:25,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 633 transitions. [2023-08-27 07:09:25,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 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) [2023-08-27 07:09:25,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:25,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:25,050 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 214 flow. Second operand 3 states and 633 transitions. [2023-08-27 07:09:25,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 107 transitions, 536 flow [2023-08-27 07:09:25,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 107 transitions, 531 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:09:25,063 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 234 flow [2023-08-27 07:09:25,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2023-08-27 07:09:25,064 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-27 07:09:25,064 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 234 flow [2023-08-27 07:09:25,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 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) [2023-08-27 07:09:25,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:25,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:25,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 07:09:25,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:25,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1155090137, now seen corresponding path program 1 times [2023-08-27 07:09:25,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:25,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531674518] [2023-08-27 07:09:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:25,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:25,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:25,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531674518] [2023-08-27 07:09:25,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531674518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:25,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:25,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:09:25,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422632461] [2023-08-27 07:09:25,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:25,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:09:25,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:09:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:09:25,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 440 [2023-08-27 07:09:25,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 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) [2023-08-27 07:09:25,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:25,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 440 [2023-08-27 07:09:25,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:26,923 INFO L124 PetriNetUnfolderBase]: 16764/23257 cut-off events. [2023-08-27 07:09:26,924 INFO L125 PetriNetUnfolderBase]: For 8392/8392 co-relation queries the response was YES. [2023-08-27 07:09:26,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60154 conditions, 23257 events. 16764/23257 cut-off events. For 8392/8392 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 131739 event pairs, 14487 based on Foata normal form. 88/15551 useless extension candidates. Maximal degree in co-relation 60145. Up to 22243 conditions per place. [2023-08-27 07:09:27,054 INFO L140 encePairwiseOnDemand]: 434/440 looper letters, 83 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-27 07:09:27,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 480 flow [2023-08-27 07:09:27,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:09:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:09:27,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 889 transitions. [2023-08-27 07:09:27,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4040909090909091 [2023-08-27 07:09:27,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 889 transitions. [2023-08-27 07:09:27,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 889 transitions. [2023-08-27 07:09:27,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:27,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 889 transitions. [2023-08-27 07:09:27,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 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) [2023-08-27 07:09:27,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 440.0) internal successors, (2640), 6 states have internal predecessors, (2640), 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) [2023-08-27 07:09:27,062 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 440.0) internal successors, (2640), 6 states have internal predecessors, (2640), 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) [2023-08-27 07:09:27,062 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 234 flow. Second operand 5 states and 889 transitions. [2023-08-27 07:09:27,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 480 flow [2023-08-27 07:09:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:09:27,072 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 254 flow [2023-08-27 07:09:27,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-27 07:09:27,073 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-27 07:09:27,073 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 254 flow [2023-08-27 07:09:27,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 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) [2023-08-27 07:09:27,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:27,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:27,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 07:09:27,074 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:27,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1241292488, now seen corresponding path program 1 times [2023-08-27 07:09:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:27,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487884435] [2023-08-27 07:09:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:27,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 07:09:27,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:27,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487884435] [2023-08-27 07:09:27,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487884435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:27,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:27,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:09:27,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13883897] [2023-08-27 07:09:27,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:27,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:09:27,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:27,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:09:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:09:27,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 440 [2023-08-27 07:09:27,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2023-08-27 07:09:27,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:27,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 440 [2023-08-27 07:09:27,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:29,632 INFO L124 PetriNetUnfolderBase]: 22412/30011 cut-off events. [2023-08-27 07:09:29,633 INFO L125 PetriNetUnfolderBase]: For 10265/10265 co-relation queries the response was YES. [2023-08-27 07:09:29,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77977 conditions, 30011 events. 22412/30011 cut-off events. For 10265/10265 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 163428 event pairs, 14504 based on Foata normal form. 0/19052 useless extension candidates. Maximal degree in co-relation 77966. Up to 24702 conditions per place. [2023-08-27 07:09:29,745 INFO L140 encePairwiseOnDemand]: 432/440 looper letters, 99 selfloop transitions, 7 changer transitions 0/115 dead transitions. [2023-08-27 07:09:29,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 115 transitions, 630 flow [2023-08-27 07:09:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:09:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:09:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2023-08-27 07:09:29,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810606060606061 [2023-08-27 07:09:29,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2023-08-27 07:09:29,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2023-08-27 07:09:29,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:29,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2023-08-27 07:09:29,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2023-08-27 07:09:29,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:29,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:29,751 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 254 flow. Second operand 3 states and 635 transitions. [2023-08-27 07:09:29,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 115 transitions, 630 flow [2023-08-27 07:09:29,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 115 transitions, 625 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:09:29,760 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 304 flow [2023-08-27 07:09:29,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2023-08-27 07:09:29,761 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-27 07:09:29,761 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 304 flow [2023-08-27 07:09:29,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2023-08-27 07:09:29,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:29,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:29,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 07:09:29,761 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:29,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:29,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1241292494, now seen corresponding path program 1 times [2023-08-27 07:09:29,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:29,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393238036] [2023-08-27 07:09:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:29,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:29,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:29,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393238036] [2023-08-27 07:09:29,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393238036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:09:29,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272538370] [2023-08-27 07:09:29,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:29,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:29,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:29,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:09:29,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 07:09:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:29,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 07:09:29,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:09:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:30,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:09:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:30,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272538370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:09:30,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:09:30,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-27 07:09:30,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876753133] [2023-08-27 07:09:30,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:09:30,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 07:09:30,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 07:09:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 07:09:30,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 440 [2023-08-27 07:09:30,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 304 flow. Second operand has 12 states, 12 states have (on average 163.5) internal successors, (1962), 12 states have internal predecessors, (1962), 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) [2023-08-27 07:09:30,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:30,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 440 [2023-08-27 07:09:30,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:33,948 INFO L124 PetriNetUnfolderBase]: 27247/36823 cut-off events. [2023-08-27 07:09:33,948 INFO L125 PetriNetUnfolderBase]: For 22078/22078 co-relation queries the response was YES. [2023-08-27 07:09:34,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105158 conditions, 36823 events. 27247/36823 cut-off events. For 22078/22078 co-relation queries the response was YES. Maximal size of possible extension queue 1531. Compared 210036 event pairs, 16290 based on Foata normal form. 850/25139 useless extension candidates. Maximal degree in co-relation 105146. Up to 24525 conditions per place. [2023-08-27 07:09:34,125 INFO L140 encePairwiseOnDemand]: 428/440 looper letters, 168 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2023-08-27 07:09:34,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 185 transitions, 1037 flow [2023-08-27 07:09:34,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:09:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:09:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1291 transitions. [2023-08-27 07:09:34,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41915584415584417 [2023-08-27 07:09:34,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1291 transitions. [2023-08-27 07:09:34,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1291 transitions. [2023-08-27 07:09:34,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:34,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1291 transitions. [2023-08-27 07:09:34,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 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) [2023-08-27 07:09:34,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 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) [2023-08-27 07:09:34,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 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) [2023-08-27 07:09:34,136 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 304 flow. Second operand 7 states and 1291 transitions. [2023-08-27 07:09:34,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 185 transitions, 1037 flow [2023-08-27 07:09:34,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 185 transitions, 1029 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:09:34,161 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 352 flow [2023-08-27 07:09:34,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=352, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2023-08-27 07:09:34,161 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2023-08-27 07:09:34,161 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 352 flow [2023-08-27 07:09:34,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.5) internal successors, (1962), 12 states have internal predecessors, (1962), 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) [2023-08-27 07:09:34,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:34,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:34,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 07:09:34,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:34,368 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:34,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash 887832321, now seen corresponding path program 1 times [2023-08-27 07:09:34,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569727245] [2023-08-27 07:09:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:34,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:34,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569727245] [2023-08-27 07:09:34,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569727245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:09:34,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077220352] [2023-08-27 07:09:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:34,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:09:34,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 07:09:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:34,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 07:09:34,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:09:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:34,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:09:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:34,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077220352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:09:34,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:09:34,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 07:09:34,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526130741] [2023-08-27 07:09:34,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:09:34,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 07:09:34,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:34,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 07:09:34,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-27 07:09:34,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 440 [2023-08-27 07:09:34,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 163.66666666666666) internal successors, (1964), 12 states have internal predecessors, (1964), 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) [2023-08-27 07:09:34,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:34,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 440 [2023-08-27 07:09:34,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:37,844 INFO L124 PetriNetUnfolderBase]: 22178/30258 cut-off events. [2023-08-27 07:09:37,845 INFO L125 PetriNetUnfolderBase]: For 28906/28906 co-relation queries the response was YES. [2023-08-27 07:09:37,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93083 conditions, 30258 events. 22178/30258 cut-off events. For 28906/28906 co-relation queries the response was YES. Maximal size of possible extension queue 1391. Compared 170302 event pairs, 13111 based on Foata normal form. 448/19836 useless extension candidates. Maximal degree in co-relation 93069. Up to 21279 conditions per place. [2023-08-27 07:09:38,013 INFO L140 encePairwiseOnDemand]: 428/440 looper letters, 120 selfloop transitions, 9 changer transitions 0/138 dead transitions. [2023-08-27 07:09:38,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 138 transitions, 852 flow [2023-08-27 07:09:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:09:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:09:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1248 transitions. [2023-08-27 07:09:38,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051948051948052 [2023-08-27 07:09:38,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1248 transitions. [2023-08-27 07:09:38,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1248 transitions. [2023-08-27 07:09:38,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:38,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1248 transitions. [2023-08-27 07:09:38,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.28571428571428) internal successors, (1248), 7 states have internal predecessors, (1248), 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) [2023-08-27 07:09:38,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 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) [2023-08-27 07:09:38,024 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 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) [2023-08-27 07:09:38,024 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 352 flow. Second operand 7 states and 1248 transitions. [2023-08-27 07:09:38,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 138 transitions, 852 flow [2023-08-27 07:09:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 138 transitions, 838 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 07:09:38,040 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 408 flow [2023-08-27 07:09:38,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2023-08-27 07:09:38,040 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2023-08-27 07:09:38,040 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 408 flow [2023-08-27 07:09:38,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.66666666666666) internal successors, (1964), 12 states have internal predecessors, (1964), 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) [2023-08-27 07:09:38,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:38,041 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:38,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 07:09:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:38,242 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:38,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1546234791, now seen corresponding path program 1 times [2023-08-27 07:09:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:38,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190603808] [2023-08-27 07:09:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:38,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:09:38,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:38,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190603808] [2023-08-27 07:09:38,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190603808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:09:38,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:09:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:09:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100121652] [2023-08-27 07:09:38,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:09:38,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:09:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:38,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:09:38,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:09:38,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 440 [2023-08-27 07:09:38,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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) [2023-08-27 07:09:38,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:38,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 440 [2023-08-27 07:09:38,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:41,571 INFO L124 PetriNetUnfolderBase]: 23170/31948 cut-off events. [2023-08-27 07:09:41,572 INFO L125 PetriNetUnfolderBase]: For 30780/30780 co-relation queries the response was YES. [2023-08-27 07:09:41,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101253 conditions, 31948 events. 23170/31948 cut-off events. For 30780/30780 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 192316 event pairs, 14067 based on Foata normal form. 0/21398 useless extension candidates. Maximal degree in co-relation 101235. Up to 22183 conditions per place. [2023-08-27 07:09:41,943 INFO L140 encePairwiseOnDemand]: 436/440 looper letters, 108 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2023-08-27 07:09:41,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 121 transitions, 821 flow [2023-08-27 07:09:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:09:41,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:09:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2023-08-27 07:09:41,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2023-08-27 07:09:41,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2023-08-27 07:09:41,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2023-08-27 07:09:41,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:41,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2023-08-27 07:09:41,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 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) [2023-08-27 07:09:41,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:41,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:09:41,948 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 408 flow. Second operand 3 states and 630 transitions. [2023-08-27 07:09:41,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 121 transitions, 821 flow [2023-08-27 07:09:41,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 801 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 07:09:41,966 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 387 flow [2023-08-27 07:09:41,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2023-08-27 07:09:41,967 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2023-08-27 07:09:41,967 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 387 flow [2023-08-27 07:09:41,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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) [2023-08-27 07:09:41,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:41,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:41,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 07:09:41,968 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:41,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:41,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1546234790, now seen corresponding path program 2 times [2023-08-27 07:09:41,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:41,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593656458] [2023-08-27 07:09:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:41,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:42,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593656458] [2023-08-27 07:09:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593656458] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:09:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589570699] [2023-08-27 07:09:42,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:09:42,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:42,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:42,428 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:09:42,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 07:09:42,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:09:42,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:09:42,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:09:42,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:09:42,627 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:09:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:09:42,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:09:42,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:09:42,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:09:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:42,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:09:42,882 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:09:42,883 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 07:09:42,892 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:09:42,893 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-08-27 07:09:42,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-27 07:09:42,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-08-27 07:09:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:42,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589570699] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:09:42,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:09:42,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 07:09:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082355615] [2023-08-27 07:09:42,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:09:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 07:09:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 07:09:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=314, Unknown=5, NotChecked=0, Total=380 [2023-08-27 07:09:42,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 440 [2023-08-27 07:09:42,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 387 flow. Second operand has 20 states, 20 states have (on average 153.5) internal successors, (3070), 20 states have internal predecessors, (3070), 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) [2023-08-27 07:09:42,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:42,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 440 [2023-08-27 07:09:42,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:47,151 INFO L124 PetriNetUnfolderBase]: 25946/35823 cut-off events. [2023-08-27 07:09:47,151 INFO L125 PetriNetUnfolderBase]: For 40897/40897 co-relation queries the response was YES. [2023-08-27 07:09:47,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113663 conditions, 35823 events. 25946/35823 cut-off events. For 40897/40897 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 210493 event pairs, 22702 based on Foata normal form. 0/24990 useless extension candidates. Maximal degree in co-relation 113645. Up to 35403 conditions per place. [2023-08-27 07:09:47,386 INFO L140 encePairwiseOnDemand]: 432/440 looper letters, 82 selfloop transitions, 13 changer transitions 0/100 dead transitions. [2023-08-27 07:09:47,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 681 flow [2023-08-27 07:09:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:09:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:09:47,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1143 transitions. [2023-08-27 07:09:47,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711038961038961 [2023-08-27 07:09:47,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1143 transitions. [2023-08-27 07:09:47,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1143 transitions. [2023-08-27 07:09:47,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:47,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1143 transitions. [2023-08-27 07:09:47,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.28571428571428) internal successors, (1143), 7 states have internal predecessors, (1143), 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) [2023-08-27 07:09:47,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 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) [2023-08-27 07:09:47,395 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 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) [2023-08-27 07:09:47,395 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 387 flow. Second operand 7 states and 1143 transitions. [2023-08-27 07:09:47,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 681 flow [2023-08-27 07:09:47,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 669 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:09:47,418 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 452 flow [2023-08-27 07:09:47,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2023-08-27 07:09:47,418 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2023-08-27 07:09:47,418 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 452 flow [2023-08-27 07:09:47,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 153.5) internal successors, (3070), 20 states have internal predecessors, (3070), 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) [2023-08-27 07:09:47,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:47,419 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:47,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 07:09:47,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 07:09:47,624 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:47,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:47,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1546234787, now seen corresponding path program 1 times [2023-08-27 07:09:47,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:47,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976098011] [2023-08-27 07:09:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:47,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:48,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:48,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976098011] [2023-08-27 07:09:48,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976098011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:09:48,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779051597] [2023-08-27 07:09:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:48,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:48,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:48,069 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:09:48,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 07:09:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:48,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:09:48,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:09:48,233 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:09:48,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:09:48,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:09:48,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:09:48,291 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:09:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:48,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:09:48,373 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_331 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_331) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2023-08-27 07:09:48,424 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:09:48,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 07:09:48,432 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:09:48,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 07:09:48,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 07:09:48,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 07:09:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:48,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779051597] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:09:48,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:09:48,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 07:09:48,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798222994] [2023-08-27 07:09:48,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:09:48,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 07:09:48,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 07:09:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=285, Unknown=2, NotChecked=34, Total=380 [2023-08-27 07:09:48,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 440 [2023-08-27 07:09:48,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 452 flow. Second operand has 20 states, 20 states have (on average 153.5) internal successors, (3070), 20 states have internal predecessors, (3070), 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) [2023-08-27 07:09:48,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:48,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 440 [2023-08-27 07:09:48,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:52,629 INFO L124 PetriNetUnfolderBase]: 23654/32275 cut-off events. [2023-08-27 07:09:52,629 INFO L125 PetriNetUnfolderBase]: For 34431/34431 co-relation queries the response was YES. [2023-08-27 07:09:52,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104851 conditions, 32275 events. 23654/32275 cut-off events. For 34431/34431 co-relation queries the response was YES. Maximal size of possible extension queue 1369. Compared 180737 event pairs, 19508 based on Foata normal form. 0/21580 useless extension candidates. Maximal degree in co-relation 104831. Up to 31863 conditions per place. [2023-08-27 07:09:52,829 INFO L140 encePairwiseOnDemand]: 433/440 looper letters, 82 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2023-08-27 07:09:52,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 99 transitions, 702 flow [2023-08-27 07:09:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 07:09:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 07:09:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1142 transitions. [2023-08-27 07:09:52,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37077922077922076 [2023-08-27 07:09:52,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1142 transitions. [2023-08-27 07:09:52,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1142 transitions. [2023-08-27 07:09:52,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:09:52,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1142 transitions. [2023-08-27 07:09:52,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.14285714285714) internal successors, (1142), 7 states have internal predecessors, (1142), 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) [2023-08-27 07:09:52,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 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) [2023-08-27 07:09:52,838 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 440.0) internal successors, (3520), 8 states have internal predecessors, (3520), 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) [2023-08-27 07:09:52,838 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 452 flow. Second operand 7 states and 1142 transitions. [2023-08-27 07:09:52,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 99 transitions, 702 flow [2023-08-27 07:09:52,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 99 transitions, 690 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 07:09:52,882 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 452 flow [2023-08-27 07:09:52,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2023-08-27 07:09:52,883 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2023-08-27 07:09:52,883 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 452 flow [2023-08-27 07:09:52,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 153.5) internal successors, (3070), 20 states have internal predecessors, (3070), 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) [2023-08-27 07:09:52,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:09:52,884 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:09:52,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 07:09:53,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 07:09:53,090 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:09:53,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:09:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1192774617, now seen corresponding path program 2 times [2023-08-27 07:09:53,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:09:53,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308133865] [2023-08-27 07:09:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:09:53,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:09:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:09:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:53,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:09:53,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308133865] [2023-08-27 07:09:53,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308133865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:09:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345526998] [2023-08-27 07:09:53,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:09:53,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:09:53,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:09:53,441 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:09:53,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 07:09:53,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:09:53,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:09:53,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:09:53,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:09:53,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:09:53,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:09:53,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:09:53,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:09:53,699 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:09:53,711 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-08-27 07:09:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:09:53,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:09:53,746 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_379 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_379) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 9223372039002259456))) is different from false [2023-08-27 07:09:53,757 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_38| Int) (v_ArrVal_379 (Array Int Int))) (or (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_38| v_ArrVal_379) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456)) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_38| |c_#StackHeapBarrier|))) is different from false [2023-08-27 07:09:53,772 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_38| Int) (v_ArrVal_379 (Array Int Int)) (v_ArrVal_378 (Array Int Int))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_378) |v_thread1Thread1of1ForFork0_~#t2~0.base_38| v_ArrVal_379) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_38| |c_#StackHeapBarrier|))) is different from false [2023-08-27 07:09:53,781 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:09:53,782 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 07:09:53,789 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:09:53,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-08-27 07:09:53,794 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-08-27 07:09:53,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 07:09:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-27 07:09:53,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345526998] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:09:53,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:09:53,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 07:09:53,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057066673] [2023-08-27 07:09:53,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:09:53,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 07:09:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:09:53,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 07:09:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=230, Unknown=3, NotChecked=96, Total=380 [2023-08-27 07:09:53,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 440 [2023-08-27 07:09:53,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 452 flow. Second operand has 20 states, 20 states have (on average 147.3) internal successors, (2946), 20 states have internal predecessors, (2946), 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) [2023-08-27 07:09:53,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:09:53,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 440 [2023-08-27 07:09:53,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:09:59,794 INFO L124 PetriNetUnfolderBase]: 36465/49310 cut-off events. [2023-08-27 07:09:59,795 INFO L125 PetriNetUnfolderBase]: For 51831/51831 co-relation queries the response was YES. [2023-08-27 07:10:00,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160924 conditions, 49310 events. 36465/49310 cut-off events. For 51831/51831 co-relation queries the response was YES. Maximal size of possible extension queue 2118. Compared 288346 event pairs, 13775 based on Foata normal form. 0/33183 useless extension candidates. Maximal degree in co-relation 160903. Up to 28089 conditions per place. [2023-08-27 07:10:00,179 INFO L140 encePairwiseOnDemand]: 427/440 looper letters, 164 selfloop transitions, 35 changer transitions 0/204 dead transitions. [2023-08-27 07:10:00,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 204 transitions, 1391 flow [2023-08-27 07:10:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 07:10:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 07:10:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2067 transitions. [2023-08-27 07:10:00,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613636363636364 [2023-08-27 07:10:00,183 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2067 transitions. [2023-08-27 07:10:00,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2067 transitions. [2023-08-27 07:10:00,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:00,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2067 transitions. [2023-08-27 07:10:00,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 159.0) internal successors, (2067), 13 states have internal predecessors, (2067), 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) [2023-08-27 07:10:00,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 440.0) internal successors, (6160), 14 states have internal predecessors, (6160), 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) [2023-08-27 07:10:00,190 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 440.0) internal successors, (6160), 14 states have internal predecessors, (6160), 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) [2023-08-27 07:10:00,190 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 452 flow. Second operand 13 states and 2067 transitions. [2023-08-27 07:10:00,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 204 transitions, 1391 flow [2023-08-27 07:10:00,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 204 transitions, 1365 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 07:10:00,242 INFO L231 Difference]: Finished difference. Result has 115 places, 112 transitions, 674 flow [2023-08-27 07:10:00,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=674, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2023-08-27 07:10:00,242 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2023-08-27 07:10:00,242 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 674 flow [2023-08-27 07:10:00,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 147.3) internal successors, (2946), 20 states have internal predecessors, (2946), 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) [2023-08-27 07:10:00,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:00,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:00,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 07:10:00,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:00,449 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:10:00,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1192774618, now seen corresponding path program 1 times [2023-08-27 07:10:00,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:00,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395200440] [2023-08-27 07:10:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:00,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395200440] [2023-08-27 07:10:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395200440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:10:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533876886] [2023-08-27 07:10:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:00,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:00,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:00,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:10:00,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 07:10:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:00,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 07:10:00,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:10:00,992 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:10:01,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:10:01,023 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:10:01,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:10:01,079 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:10:01,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-08-27 07:10:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:01,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:10:01,294 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_427 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_427) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 4294967296)) is different from false [2023-08-27 07:10:01,304 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_40| Int) (v_ArrVal_427 (Array Int Int))) (or (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_40| v_ArrVal_427) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 4294967296) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_40| |c_#StackHeapBarrier|))) is different from false [2023-08-27 07:10:01,358 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:10:01,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 07:10:01,367 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:10:01,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-08-27 07:10:01,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-08-27 07:10:01,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-08-27 07:10:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:01,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533876886] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:10:01,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:10:01,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-08-27 07:10:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183122104] [2023-08-27 07:10:01,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:10:01,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 07:10:01,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 07:10:01,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=323, Unknown=12, NotChecked=74, Total=462 [2023-08-27 07:10:01,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 440 [2023-08-27 07:10:01,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 674 flow. Second operand has 22 states, 22 states have (on average 140.3181818181818) internal successors, (3087), 22 states have internal predecessors, (3087), 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) [2023-08-27 07:10:01,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:01,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 440 [2023-08-27 07:10:01,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:07,487 INFO L124 PetriNetUnfolderBase]: 36531/49851 cut-off events. [2023-08-27 07:10:07,488 INFO L125 PetriNetUnfolderBase]: For 70223/70223 co-relation queries the response was YES. [2023-08-27 07:10:07,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176499 conditions, 49851 events. 36531/49851 cut-off events. For 70223/70223 co-relation queries the response was YES. Maximal size of possible extension queue 2235. Compared 300143 event pairs, 15856 based on Foata normal form. 875/36589 useless extension candidates. Maximal degree in co-relation 176473. Up to 28609 conditions per place. [2023-08-27 07:10:07,912 INFO L140 encePairwiseOnDemand]: 427/440 looper letters, 170 selfloop transitions, 43 changer transitions 0/218 dead transitions. [2023-08-27 07:10:07,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 218 transitions, 1614 flow [2023-08-27 07:10:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 07:10:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 07:10:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1974 transitions. [2023-08-27 07:10:07,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3451048951048951 [2023-08-27 07:10:07,915 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1974 transitions. [2023-08-27 07:10:07,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1974 transitions. [2023-08-27 07:10:07,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:07,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1974 transitions. [2023-08-27 07:10:07,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 151.84615384615384) internal successors, (1974), 13 states have internal predecessors, (1974), 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) [2023-08-27 07:10:07,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 440.0) internal successors, (6160), 14 states have internal predecessors, (6160), 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) [2023-08-27 07:10:07,923 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 440.0) internal successors, (6160), 14 states have internal predecessors, (6160), 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) [2023-08-27 07:10:07,923 INFO L175 Difference]: Start difference. First operand has 115 places, 112 transitions, 674 flow. Second operand 13 states and 1974 transitions. [2023-08-27 07:10:07,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 218 transitions, 1614 flow [2023-08-27 07:10:08,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 218 transitions, 1584 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-27 07:10:08,023 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 774 flow [2023-08-27 07:10:08,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=774, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2023-08-27 07:10:08,023 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2023-08-27 07:10:08,023 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 774 flow [2023-08-27 07:10:08,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 140.3181818181818) internal successors, (3087), 22 states have internal predecessors, (3087), 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) [2023-08-27 07:10:08,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:08,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:08,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 07:10:08,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 07:10:08,235 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:10:08,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:08,236 INFO L85 PathProgramCache]: Analyzing trace with hash 688639423, now seen corresponding path program 1 times [2023-08-27 07:10:08,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:08,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004343657] [2023-08-27 07:10:08,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:08,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:08,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:08,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004343657] [2023-08-27 07:10:08,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004343657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:10:08,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308631912] [2023-08-27 07:10:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:08,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:08,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:08,369 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:10:08,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 07:10:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:08,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 07:10:08,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:10:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:08,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:10:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:08,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308631912] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:10:08,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:10:08,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-27 07:10:08,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790949185] [2023-08-27 07:10:08,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:10:08,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 07:10:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:08,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 07:10:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-08-27 07:10:08,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 440 [2023-08-27 07:10:08,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 774 flow. Second operand has 17 states, 17 states have (on average 163.35294117647058) internal successors, (2777), 17 states have internal predecessors, (2777), 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) [2023-08-27 07:10:08,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:08,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 440 [2023-08-27 07:10:08,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:17,037 INFO L124 PetriNetUnfolderBase]: 50804/70186 cut-off events. [2023-08-27 07:10:17,037 INFO L125 PetriNetUnfolderBase]: For 139994/140079 co-relation queries the response was YES. [2023-08-27 07:10:17,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254658 conditions, 70186 events. 50804/70186 cut-off events. For 139994/140079 co-relation queries the response was YES. Maximal size of possible extension queue 2953. Compared 457629 event pairs, 25434 based on Foata normal form. 1973/53507 useless extension candidates. Maximal degree in co-relation 254632. Up to 37949 conditions per place. [2023-08-27 07:10:17,639 INFO L140 encePairwiseOnDemand]: 426/440 looper letters, 298 selfloop transitions, 18 changer transitions 0/350 dead transitions. [2023-08-27 07:10:17,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 350 transitions, 2733 flow [2023-08-27 07:10:17,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 07:10:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 07:10:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1849 transitions. [2023-08-27 07:10:17,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202272727272727 [2023-08-27 07:10:17,642 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1849 transitions. [2023-08-27 07:10:17,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1849 transitions. [2023-08-27 07:10:17,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:17,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1849 transitions. [2023-08-27 07:10:17,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 184.9) internal successors, (1849), 10 states have internal predecessors, (1849), 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) [2023-08-27 07:10:17,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 440.0) internal successors, (4840), 11 states have internal predecessors, (4840), 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) [2023-08-27 07:10:17,650 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 440.0) internal successors, (4840), 11 states have internal predecessors, (4840), 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) [2023-08-27 07:10:17,650 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 774 flow. Second operand 10 states and 1849 transitions. [2023-08-27 07:10:17,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 350 transitions, 2733 flow [2023-08-27 07:10:17,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 350 transitions, 2692 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 07:10:17,966 INFO L231 Difference]: Finished difference. Result has 130 places, 128 transitions, 915 flow [2023-08-27 07:10:17,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=915, PETRI_PLACES=130, PETRI_TRANSITIONS=128} [2023-08-27 07:10:17,966 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2023-08-27 07:10:17,966 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 128 transitions, 915 flow [2023-08-27 07:10:17,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 163.35294117647058) internal successors, (2777), 17 states have internal predecessors, (2777), 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) [2023-08-27 07:10:17,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:17,967 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:17,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 07:10:18,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 07:10:18,173 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:10:18,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:18,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1678691121, now seen corresponding path program 1 times [2023-08-27 07:10:18,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:18,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155499068] [2023-08-27 07:10:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:18,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:10:18,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155499068] [2023-08-27 07:10:18,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155499068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:10:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240477618] [2023-08-27 07:10:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:18,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:18,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:18,242 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:10:18,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 07:10:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:18,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 07:10:18,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:10:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:10:18,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:10:18,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240477618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:18,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:10:18,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 07:10:18,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234765708] [2023-08-27 07:10:18,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:18,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:10:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:18,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:10:18,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:10:18,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 440 [2023-08-27 07:10:18,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 128 transitions, 915 flow. Second operand has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 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) [2023-08-27 07:10:18,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:18,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 440 [2023-08-27 07:10:18,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:25,563 INFO L124 PetriNetUnfolderBase]: 41295/58047 cut-off events. [2023-08-27 07:10:25,563 INFO L125 PetriNetUnfolderBase]: For 175010/175085 co-relation queries the response was YES. [2023-08-27 07:10:25,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230716 conditions, 58047 events. 41295/58047 cut-off events. For 175010/175085 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 372585 event pairs, 13362 based on Foata normal form. 1600/45019 useless extension candidates. Maximal degree in co-relation 230685. Up to 52378 conditions per place. [2023-08-27 07:10:26,065 INFO L140 encePairwiseOnDemand]: 435/440 looper letters, 142 selfloop transitions, 7 changer transitions 0/183 dead transitions. [2023-08-27 07:10:26,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 183 transitions, 1606 flow [2023-08-27 07:10:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:10:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:10:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 816 transitions. [2023-08-27 07:10:26,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2023-08-27 07:10:26,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 816 transitions. [2023-08-27 07:10:26,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 816 transitions. [2023-08-27 07:10:26,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:26,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 816 transitions. [2023-08-27 07:10:26,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 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) [2023-08-27 07:10:26,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 440.0) internal successors, (2200), 5 states have internal predecessors, (2200), 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) [2023-08-27 07:10:26,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 440.0) internal successors, (2200), 5 states have internal predecessors, (2200), 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) [2023-08-27 07:10:26,070 INFO L175 Difference]: Start difference. First operand has 130 places, 128 transitions, 915 flow. Second operand 4 states and 816 transitions. [2023-08-27 07:10:26,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 183 transitions, 1606 flow [2023-08-27 07:10:26,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 183 transitions, 1581 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 07:10:26,337 INFO L231 Difference]: Finished difference. Result has 128 places, 126 transitions, 898 flow [2023-08-27 07:10:26,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=898, PETRI_PLACES=128, PETRI_TRANSITIONS=126} [2023-08-27 07:10:26,338 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 54 predicate places. [2023-08-27 07:10:26,338 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 126 transitions, 898 flow [2023-08-27 07:10:26,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 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) [2023-08-27 07:10:26,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:26,338 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:26,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 07:10:26,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:26,539 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:10:26,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1680409750, now seen corresponding path program 1 times [2023-08-27 07:10:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:26,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630621249] [2023-08-27 07:10:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630621249] [2023-08-27 07:10:26,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630621249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:10:26,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000376940] [2023-08-27 07:10:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:26,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:26,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:26,833 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:10:26,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 07:10:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:26,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 07:10:26,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:10:27,033 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:10:27,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:10:27,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:10:27,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:10:27,091 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 07:10:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:27,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:10:27,223 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:10:27,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-08-27 07:10:27,230 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:10:27,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2023-08-27 07:10:27,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-27 07:10:27,271 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-08-27 07:10:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000376940] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:10:27,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:10:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-27 07:10:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182663602] [2023-08-27 07:10:27,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:10:27,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 07:10:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 07:10:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=355, Unknown=3, NotChecked=0, Total=420 [2023-08-27 07:10:27,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 440 [2023-08-27 07:10:27,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 126 transitions, 898 flow. Second operand has 21 states, 21 states have (on average 153.47619047619048) internal successors, (3223), 21 states have internal predecessors, (3223), 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) [2023-08-27 07:10:27,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:27,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 440 [2023-08-27 07:10:27,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:34,966 INFO L124 PetriNetUnfolderBase]: 44443/60880 cut-off events. [2023-08-27 07:10:34,966 INFO L125 PetriNetUnfolderBase]: For 170727/170727 co-relation queries the response was YES. [2023-08-27 07:10:35,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240725 conditions, 60880 events. 44443/60880 cut-off events. For 170727/170727 co-relation queries the response was YES. Maximal size of possible extension queue 2363. Compared 371879 event pairs, 35263 based on Foata normal form. 0/46212 useless extension candidates. Maximal degree in co-relation 240693. Up to 60297 conditions per place. [2023-08-27 07:10:35,543 INFO L140 encePairwiseOnDemand]: 428/440 looper letters, 132 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2023-08-27 07:10:35,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 156 transitions, 1412 flow [2023-08-27 07:10:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:10:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:10:35,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1456 transitions. [2023-08-27 07:10:35,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36767676767676766 [2023-08-27 07:10:35,545 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1456 transitions. [2023-08-27 07:10:35,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1456 transitions. [2023-08-27 07:10:35,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:35,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1456 transitions. [2023-08-27 07:10:35,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.77777777777777) internal successors, (1456), 9 states have internal predecessors, (1456), 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) [2023-08-27 07:10:35,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 440.0) internal successors, (4400), 10 states have internal predecessors, (4400), 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) [2023-08-27 07:10:35,549 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 440.0) internal successors, (4400), 10 states have internal predecessors, (4400), 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) [2023-08-27 07:10:35,549 INFO L175 Difference]: Start difference. First operand has 128 places, 126 transitions, 898 flow. Second operand 9 states and 1456 transitions. [2023-08-27 07:10:35,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 156 transitions, 1412 flow [2023-08-27 07:10:35,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 156 transitions, 1393 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:10:35,888 INFO L231 Difference]: Finished difference. Result has 137 places, 134 transitions, 1022 flow [2023-08-27 07:10:35,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1022, PETRI_PLACES=137, PETRI_TRANSITIONS=134} [2023-08-27 07:10:35,889 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 63 predicate places. [2023-08-27 07:10:35,889 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 134 transitions, 1022 flow [2023-08-27 07:10:35,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 153.47619047619048) internal successors, (3223), 21 states have internal predecessors, (3223), 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) [2023-08-27 07:10:35,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:35,890 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:35,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 07:10:36,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:36,095 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:10:36,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:36,095 INFO L85 PathProgramCache]: Analyzing trace with hash -499816103, now seen corresponding path program 1 times [2023-08-27 07:10:36,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:36,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896684705] [2023-08-27 07:10:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:36,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:10:36,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:36,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896684705] [2023-08-27 07:10:36,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896684705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:36,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:36,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:10:36,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117918785] [2023-08-27 07:10:36,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:36,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:10:36,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:36,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:10:36,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:10:36,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 440 [2023-08-27 07:10:36,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 134 transitions, 1022 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2023-08-27 07:10:36,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:36,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 440 [2023-08-27 07:10:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:41,910 INFO L124 PetriNetUnfolderBase]: 34177/47457 cut-off events. [2023-08-27 07:10:41,911 INFO L125 PetriNetUnfolderBase]: For 143157/143232 co-relation queries the response was YES. [2023-08-27 07:10:42,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193211 conditions, 47457 events. 34177/47457 cut-off events. For 143157/143232 co-relation queries the response was YES. Maximal size of possible extension queue 1974. Compared 290913 event pairs, 26800 based on Foata normal form. 690/37544 useless extension candidates. Maximal degree in co-relation 193176. Up to 46251 conditions per place. [2023-08-27 07:10:42,415 INFO L140 encePairwiseOnDemand]: 437/440 looper letters, 91 selfloop transitions, 1 changer transitions 0/128 dead transitions. [2023-08-27 07:10:42,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 128 transitions, 1163 flow [2023-08-27 07:10:42,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:10:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:10:42,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-08-27 07:10:42,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462121212121212 [2023-08-27 07:10:42,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-08-27 07:10:42,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-08-27 07:10:42,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:42,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-08-27 07:10:42,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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) [2023-08-27 07:10:42,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:10:42,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:10:42,419 INFO L175 Difference]: Start difference. First operand has 137 places, 134 transitions, 1022 flow. Second operand 3 states and 589 transitions. [2023-08-27 07:10:42,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 128 transitions, 1163 flow [2023-08-27 07:10:42,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 128 transitions, 1120 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-27 07:10:42,700 INFO L231 Difference]: Finished difference. Result has 133 places, 128 transitions, 938 flow [2023-08-27 07:10:42,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=938, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2023-08-27 07:10:42,700 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 59 predicate places. [2023-08-27 07:10:42,700 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 938 flow [2023-08-27 07:10:42,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2023-08-27 07:10:42,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:42,701 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:42,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 07:10:42,701 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:10:42,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:42,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1680409747, now seen corresponding path program 1 times [2023-08-27 07:10:42,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:42,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651102261] [2023-08-27 07:10:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:42,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:42,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651102261] [2023-08-27 07:10:42,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651102261] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:10:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703886616] [2023-08-27 07:10:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:42,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:42,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:42,993 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:10:43,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 07:10:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:43,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 07:10:43,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:10:43,214 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-27 07:10:43,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:10:43,238 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:10:43,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 07:10:43,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 07:10:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:43,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:10:43,339 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_611 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_611) c_~X_0~0.base) (+ 8 c_~X_0~0.offset)) 9223372039002259456))) is different from false [2023-08-27 07:10:43,350 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_611 (Array Int Int)) (v_ArrVal_610 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_610) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_611) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-08-27 07:10:43,358 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:10:43,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-27 07:10:43,364 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 07:10:43,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-08-27 07:10:43,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-08-27 07:10:43,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-08-27 07:10:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-08-27 07:10:43,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703886616] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:10:43,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:10:43,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-27 07:10:43,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930203507] [2023-08-27 07:10:43,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:10:43,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 07:10:43,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:43,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 07:10:43,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=291, Unknown=2, NotChecked=70, Total=420 [2023-08-27 07:10:43,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 440 [2023-08-27 07:10:43,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 938 flow. Second operand has 21 states, 21 states have (on average 153.47619047619048) internal successors, (3223), 21 states have internal predecessors, (3223), 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) [2023-08-27 07:10:43,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:43,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 440 [2023-08-27 07:10:43,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:49,673 INFO L124 PetriNetUnfolderBase]: 37007/50951 cut-off events. [2023-08-27 07:10:49,673 INFO L125 PetriNetUnfolderBase]: For 140950/140950 co-relation queries the response was YES. [2023-08-27 07:10:50,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205779 conditions, 50951 events. 37007/50951 cut-off events. For 140950/140950 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 307324 event pairs, 28789 based on Foata normal form. 0/39916 useless extension candidates. Maximal degree in co-relation 205743. Up to 50355 conditions per place. [2023-08-27 07:10:50,192 INFO L140 encePairwiseOnDemand]: 431/440 looper letters, 126 selfloop transitions, 18 changer transitions 0/149 dead transitions. [2023-08-27 07:10:50,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 149 transitions, 1379 flow [2023-08-27 07:10:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:10:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:10:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1451 transitions. [2023-08-27 07:10:50,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664141414141414 [2023-08-27 07:10:50,194 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1451 transitions. [2023-08-27 07:10:50,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1451 transitions. [2023-08-27 07:10:50,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:50,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1451 transitions. [2023-08-27 07:10:50,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 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) [2023-08-27 07:10:50,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 440.0) internal successors, (4400), 10 states have internal predecessors, (4400), 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) [2023-08-27 07:10:50,199 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 440.0) internal successors, (4400), 10 states have internal predecessors, (4400), 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) [2023-08-27 07:10:50,200 INFO L175 Difference]: Start difference. First operand has 133 places, 128 transitions, 938 flow. Second operand 9 states and 1451 transitions. [2023-08-27 07:10:50,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 149 transitions, 1379 flow [2023-08-27 07:10:50,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 149 transitions, 1378 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:50,720 INFO L231 Difference]: Finished difference. Result has 140 places, 127 transitions, 967 flow [2023-08-27 07:10:50,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=967, PETRI_PLACES=140, PETRI_TRANSITIONS=127} [2023-08-27 07:10:50,721 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 66 predicate places. [2023-08-27 07:10:50,721 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 127 transitions, 967 flow [2023-08-27 07:10:50,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 153.47619047619048) internal successors, (3223), 21 states have internal predecessors, (3223), 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) [2023-08-27 07:10:50,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:50,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:50,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 07:10:50,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 07:10:50,927 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:10:50,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:50,928 INFO L85 PathProgramCache]: Analyzing trace with hash -499816102, now seen corresponding path program 1 times [2023-08-27 07:10:50,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:50,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141600907] [2023-08-27 07:10:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:50,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:10:51,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:51,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141600907] [2023-08-27 07:10:51,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141600907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:10:51,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988791225] [2023-08-27 07:10:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:51,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:10:51,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:51,085 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:10:51,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 07:10:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:51,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 07:10:51,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:10:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 07:10:51,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 07:10:51,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988791225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:51,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 07:10:51,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 9 [2023-08-27 07:10:51,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344713311] [2023-08-27 07:10:51,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:51,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:10:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:51,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:10:51,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:10:51,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 440 [2023-08-27 07:10:51,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 127 transitions, 967 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2023-08-27 07:10:51,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:51,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 440 [2023-08-27 07:10:51,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:55,718 INFO L124 PetriNetUnfolderBase]: 28014/39204 cut-off events. [2023-08-27 07:10:55,718 INFO L125 PetriNetUnfolderBase]: For 116950/117025 co-relation queries the response was YES. [2023-08-27 07:10:55,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159205 conditions, 39204 events. 28014/39204 cut-off events. For 116950/117025 co-relation queries the response was YES. Maximal size of possible extension queue 1679. Compared 238175 event pairs, 21553 based on Foata normal form. 10/32059 useless extension candidates. Maximal degree in co-relation 159169. Up to 38098 conditions per place. [2023-08-27 07:10:56,101 INFO L140 encePairwiseOnDemand]: 437/440 looper letters, 86 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2023-08-27 07:10:56,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 121 transitions, 1104 flow [2023-08-27 07:10:56,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:10:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:10:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 587 transitions. [2023-08-27 07:10:56,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446969696969697 [2023-08-27 07:10:56,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 587 transitions. [2023-08-27 07:10:56,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 587 transitions. [2023-08-27 07:10:56,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:56,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 587 transitions. [2023-08-27 07:10:56,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 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) [2023-08-27 07:10:56,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:10:56,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:10:56,104 INFO L175 Difference]: Start difference. First operand has 140 places, 127 transitions, 967 flow. Second operand 3 states and 587 transitions. [2023-08-27 07:10:56,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 121 transitions, 1104 flow [2023-08-27 07:10:56,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 1059 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-27 07:10:56,383 INFO L231 Difference]: Finished difference. Result has 130 places, 121 transitions, 887 flow [2023-08-27 07:10:56,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=887, PETRI_PLACES=130, PETRI_TRANSITIONS=121} [2023-08-27 07:10:56,383 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2023-08-27 07:10:56,383 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 121 transitions, 887 flow [2023-08-27 07:10:56,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 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) [2023-08-27 07:10:56,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:56,384 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:56,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 07:10:56,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 07:10:56,589 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:10:56,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1680409746, now seen corresponding path program 1 times [2023-08-27 07:10:56,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:56,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293377974] [2023-08-27 07:10:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:56,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 07:10:56,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:56,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293377974] [2023-08-27 07:10:56,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293377974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:56,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:56,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:10:56,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659526774] [2023-08-27 07:10:56,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:56,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:10:56,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:10:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:10:56,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 440 [2023-08-27 07:10:56,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 121 transitions, 887 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:10:56,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:56,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 440 [2023-08-27 07:10:56,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:11:00,769 INFO L124 PetriNetUnfolderBase]: 26504/37140 cut-off events. [2023-08-27 07:11:00,769 INFO L125 PetriNetUnfolderBase]: For 110881/110956 co-relation queries the response was YES. [2023-08-27 07:11:01,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149406 conditions, 37140 events. 26504/37140 cut-off events. For 110881/110956 co-relation queries the response was YES. Maximal size of possible extension queue 1480. Compared 223131 event pairs, 20355 based on Foata normal form. 10/30655 useless extension candidates. Maximal degree in co-relation 149370. Up to 36094 conditions per place. [2023-08-27 07:11:01,163 INFO L140 encePairwiseOnDemand]: 438/440 looper letters, 84 selfloop transitions, 1 changer transitions 0/119 dead transitions. [2023-08-27 07:11:01,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 119 transitions, 1041 flow [2023-08-27 07:11:01,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:11:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:11:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 585 transitions. [2023-08-27 07:11:01,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2023-08-27 07:11:01,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 585 transitions. [2023-08-27 07:11:01,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 585 transitions. [2023-08-27 07:11:01,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:11:01,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 585 transitions. [2023-08-27 07:11:01,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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) [2023-08-27 07:11:01,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:11:01,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 440.0) internal successors, (1760), 4 states have internal predecessors, (1760), 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) [2023-08-27 07:11:01,166 INFO L175 Difference]: Start difference. First operand has 130 places, 121 transitions, 887 flow. Second operand 3 states and 585 transitions. [2023-08-27 07:11:01,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 119 transitions, 1041 flow [2023-08-27 07:11:01,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 119 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:11:01,450 INFO L231 Difference]: Finished difference. Result has 130 places, 119 transitions, 872 flow [2023-08-27 07:11:01,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=872, PETRI_PLACES=130, PETRI_TRANSITIONS=119} [2023-08-27 07:11:01,451 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 56 predicate places. [2023-08-27 07:11:01,451 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 119 transitions, 872 flow [2023-08-27 07:11:01,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:11:01,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:11:01,451 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:11:01,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 07:11:01,452 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:11:01,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:11:01,452 INFO L85 PathProgramCache]: Analyzing trace with hash 553095887, now seen corresponding path program 2 times [2023-08-27 07:11:01,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:11:01,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923399758] [2023-08-27 07:11:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:11:01,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:11:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:11:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:11:01,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:11:01,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923399758] [2023-08-27 07:11:01,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923399758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 07:11:01,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4051290] [2023-08-27 07:11:01,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 07:11:01,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:11:01,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:11:01,634 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 07:11:01,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 07:11:01,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 07:11:01,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 07:11:01,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 07:11:01,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 07:11:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:11:02,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 07:11:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 07:11:02,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4051290] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 07:11:02,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 07:11:02,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-27 07:11:02,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301294691] [2023-08-27 07:11:02,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 07:11:02,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 07:11:02,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:11:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 07:11:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2023-08-27 07:11:02,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 440 [2023-08-27 07:11:02,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 119 transitions, 872 flow. Second operand has 22 states, 22 states have (on average 163.27272727272728) internal successors, (3592), 22 states have internal predecessors, (3592), 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) [2023-08-27 07:11:02,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:11:02,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 440 [2023-08-27 07:11:02,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:11:09,129 INFO L124 PetriNetUnfolderBase]: 40695/57012 cut-off events. [2023-08-27 07:11:09,129 INFO L125 PetriNetUnfolderBase]: For 179850/179959 co-relation queries the response was YES. [2023-08-27 07:11:09,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223327 conditions, 57012 events. 40695/57012 cut-off events. For 179850/179959 co-relation queries the response was YES. Maximal size of possible extension queue 2132. Compared 367567 event pairs, 13367 based on Foata normal form. 1704/48882 useless extension candidates. Maximal degree in co-relation 223291. Up to 19284 conditions per place. [2023-08-27 07:11:09,753 INFO L140 encePairwiseOnDemand]: 427/440 looper letters, 311 selfloop transitions, 35 changer transitions 0/380 dead transitions. [2023-08-27 07:11:09,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 380 transitions, 3026 flow [2023-08-27 07:11:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 07:11:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 07:11:09,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2358 transitions. [2023-08-27 07:11:09,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41223776223776226 [2023-08-27 07:11:09,755 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2358 transitions. [2023-08-27 07:11:09,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2358 transitions. [2023-08-27 07:11:09,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:11:09,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2358 transitions. [2023-08-27 07:11:09,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 181.3846153846154) internal successors, (2358), 13 states have internal predecessors, (2358), 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) [2023-08-27 07:11:09,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 440.0) internal successors, (6160), 14 states have internal predecessors, (6160), 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) [2023-08-27 07:11:09,761 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 440.0) internal successors, (6160), 14 states have internal predecessors, (6160), 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) [2023-08-27 07:11:09,761 INFO L175 Difference]: Start difference. First operand has 130 places, 119 transitions, 872 flow. Second operand 13 states and 2358 transitions. [2023-08-27 07:11:09,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 380 transitions, 3026 flow [2023-08-27 07:11:10,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 380 transitions, 3025 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:11:10,781 INFO L231 Difference]: Finished difference. Result has 147 places, 134 transitions, 1202 flow [2023-08-27 07:11:10,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1202, PETRI_PLACES=147, PETRI_TRANSITIONS=134} [2023-08-27 07:11:10,781 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 73 predicate places. [2023-08-27 07:11:10,781 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 134 transitions, 1202 flow [2023-08-27 07:11:10,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 163.27272727272728) internal successors, (3592), 22 states have internal predecessors, (3592), 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) [2023-08-27 07:11:10,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:11:10,782 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:11:10,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 07:11:10,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 07:11:10,985 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 07:11:10,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:11:10,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1680409751, now seen corresponding path program 3 times [2023-08-27 07:11:10,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:11:10,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583164882] [2023-08-27 07:11:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:11:10,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:11:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:11:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 07:11:11,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:11:11,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583164882] [2023-08-27 07:11:11,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583164882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:11:11,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:11:11,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:11:11,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919695742] [2023-08-27 07:11:11,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:11:11,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:11:11,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:11:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:11:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:11:11,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 440 [2023-08-27 07:11:11,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 134 transitions, 1202 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 07:11:11,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:11:11,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 440 [2023-08-27 07:11:11,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand