/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/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:08:13,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:08:13,299 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 09:08:13,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:08:13,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:08:13,334 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:08:13,335 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:08:13,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:08:13,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:08:13,344 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:08:13,344 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:08:13,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:08:13,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:08:13,345 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:08:13,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:08:13,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:08:13,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:08:13,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:08:13,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:08:13,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:08:13,347 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:08:13,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:08:13,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:08:13,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:08:13,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:08:13,349 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:08:13,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:08:13,349 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:08:13,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:08:13,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:08:13,350 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:08:13,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:08:13,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:08:13,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:08:13,351 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:08:13,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:08:13,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:08:13,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:08:13,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:08:13,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:08:13,686 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:08:13,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-27 09:08:14,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:08:15,209 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:08:15,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-08-27 09:08:15,225 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/464d1bfc2/f24456f4a22e4394bf3cc4cf01f74064/FLAG7be252c7c [2023-08-27 09:08:15,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/464d1bfc2/f24456f4a22e4394bf3cc4cf01f74064 [2023-08-27 09:08:15,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:08:15,254 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:08:15,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:08:15,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:08:15,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:08:15,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a818d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15, skipping insertion in model container [2023-08-27 09:08:15,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,317 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:08:15,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:08:15,730 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:08:15,761 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [218] [2023-08-27 09:08:15,762 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [219] [2023-08-27 09:08:15,780 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [730] [2023-08-27 09:08:15,784 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned long [871] [2023-08-27 09:08:15,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:08:15,838 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:08:15,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15 WrapperNode [2023-08-27 09:08:15,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:08:15,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:08:15,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:08:15,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:08:15,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,890 INFO L138 Inliner]: procedures = 243, calls = 51, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-08-27 09:08:15,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:08:15,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:08:15,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:08:15,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:08:15,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,922 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,925 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:08:15,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:08:15,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:08:15,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:08:15,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (1/1) ... [2023-08-27 09:08:15,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:08:15,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:15,978 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 09:08:15,986 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 09:08:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:08:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:08:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-27 09:08:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:08:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 09:08:16,014 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 09:08:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 09:08:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 09:08:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:08:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 09:08:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:08:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:08:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:08:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:08:16,016 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 09:08:16,175 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:08:16,177 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:08:16,490 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:08:16,497 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:08:16,497 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 09:08:16,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:08:16 BoogieIcfgContainer [2023-08-27 09:08:16,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:08:16,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:08:16,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:08:16,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:08:16,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:08:15" (1/3) ... [2023-08-27 09:08:16,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40632ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:08:16, skipping insertion in model container [2023-08-27 09:08:16,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:08:15" (2/3) ... [2023-08-27 09:08:16,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40632ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:08:16, skipping insertion in model container [2023-08-27 09:08:16,508 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:08:16" (3/3) ... [2023-08-27 09:08:16,510 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-08-27 09:08:16,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:08:16,522 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 09:08:16,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:08:16,577 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:08:16,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 151 transitions, 318 flow [2023-08-27 09:08:16,658 INFO L124 PetriNetUnfolderBase]: 11/149 cut-off events. [2023-08-27 09:08:16,659 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:08:16,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 11/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 211 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 90. Up to 3 conditions per place. [2023-08-27 09:08:16,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 151 transitions, 318 flow [2023-08-27 09:08:16,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 136 transitions, 284 flow [2023-08-27 09:08:16,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:08:16,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 136 transitions, 284 flow [2023-08-27 09:08:16,682 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 136 transitions, 284 flow [2023-08-27 09:08:16,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 136 transitions, 284 flow [2023-08-27 09:08:16,712 INFO L124 PetriNetUnfolderBase]: 8/136 cut-off events. [2023-08-27 09:08:16,712 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:08:16,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 136 events. 8/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 190 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2023-08-27 09:08:16,716 INFO L119 LiptonReduction]: Number of co-enabled transitions 3074 [2023-08-27 09:08:22,666 INFO L134 LiptonReduction]: Checked pairs total: 7564 [2023-08-27 09:08:22,666 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-27 09:08:22,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:08:22,682 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;@53bf6b28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:08:22,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 09:08:22,686 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:08:22,686 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-08-27 09:08:22,687 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:08:22,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:22,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 09:08:22,688 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:22,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash -663125611, now seen corresponding path program 1 times [2023-08-27 09:08:22,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:22,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603233501] [2023-08-27 09:08:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:22,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:22,903 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 09:08:22,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603233501] [2023-08-27 09:08:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603233501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:22,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:22,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:08:22,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159801104] [2023-08-27 09:08:22,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:22,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 09:08:22,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:22,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 09:08:22,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 09:08:22,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 264 [2023-08-27 09:08:22,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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 09:08:22,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:22,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 264 [2023-08-27 09:08:22,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:23,107 INFO L124 PetriNetUnfolderBase]: 345/596 cut-off events. [2023-08-27 09:08:23,108 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 09:08:23,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 596 events. 345/596 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2614 event pairs, 261 based on Foata normal form. 24/421 useless extension candidates. Maximal degree in co-relation 1074. Up to 563 conditions per place. [2023-08-27 09:08:23,117 INFO L140 encePairwiseOnDemand]: 263/264 looper letters, 30 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-27 09:08:23,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 146 flow [2023-08-27 09:08:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 09:08:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 09:08:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 311 transitions. [2023-08-27 09:08:23,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5890151515151515 [2023-08-27 09:08:23,137 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 311 transitions. [2023-08-27 09:08:23,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 311 transitions. [2023-08-27 09:08:23,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:23,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 311 transitions. [2023-08-27 09:08:23,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 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 09:08:23,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 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 09:08:23,152 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 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 09:08:23,154 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 88 flow. Second operand 2 states and 311 transitions. [2023-08-27 09:08:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 146 flow [2023-08-27 09:08:23,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 09:08:23,160 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow [2023-08-27 09:08:23,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-08-27 09:08:23,165 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2023-08-27 09:08:23,166 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow [2023-08-27 09:08:23,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 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 09:08:23,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:23,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:08:23,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:23,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:23,168 INFO L85 PathProgramCache]: Analyzing trace with hash 917851547, now seen corresponding path program 1 times [2023-08-27 09:08:23,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097477852] [2023-08-27 09:08:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:23,316 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 09:08:23,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097477852] [2023-08-27 09:08:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097477852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:23,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:23,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:08:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649374048] [2023-08-27 09:08:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:08:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:08:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 09:08:23,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 09:08:23,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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 09:08:23,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:23,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 09:08:23,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:23,531 INFO L124 PetriNetUnfolderBase]: 753/1260 cut-off events. [2023-08-27 09:08:23,532 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 09:08:23,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 1260 events. 753/1260 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5818 event pairs, 86 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 2487. Up to 863 conditions per place. [2023-08-27 09:08:23,539 INFO L140 encePairwiseOnDemand]: 253/264 looper letters, 77 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2023-08-27 09:08:23,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 91 transitions, 369 flow [2023-08-27 09:08:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 09:08:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 09:08:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2023-08-27 09:08:23,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446969696969697 [2023-08-27 09:08:23,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 719 transitions. [2023-08-27 09:08:23,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 719 transitions. [2023-08-27 09:08:23,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:23,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 719 transitions. [2023-08-27 09:08:23,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 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 09:08:23,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 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 09:08:23,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 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 09:08:23,548 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 5 states and 719 transitions. [2023-08-27 09:08:23,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 91 transitions, 369 flow [2023-08-27 09:08:23,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 369 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:08:23,551 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 178 flow [2023-08-27 09:08:23,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-08-27 09:08:23,552 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-08-27 09:08:23,552 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 178 flow [2023-08-27 09:08:23,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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 09:08:23,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:23,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:23,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:08:23,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:23,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1611368603, now seen corresponding path program 1 times [2023-08-27 09:08:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:23,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225402560] [2023-08-27 09:08:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:23,651 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 09:08:23,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:23,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225402560] [2023-08-27 09:08:23,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225402560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:23,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:23,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:08:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355325454] [2023-08-27 09:08:23,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:23,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:08:23,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:08:23,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:08:23,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 264 [2023-08-27 09:08:23,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 09:08:23,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:23,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 264 [2023-08-27 09:08:23,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:23,802 INFO L124 PetriNetUnfolderBase]: 551/1050 cut-off events. [2023-08-27 09:08:23,802 INFO L125 PetriNetUnfolderBase]: For 324/332 co-relation queries the response was YES. [2023-08-27 09:08:23,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 1050 events. 551/1050 cut-off events. For 324/332 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5392 event pairs, 186 based on Foata normal form. 4/798 useless extension candidates. Maximal degree in co-relation 2610. Up to 750 conditions per place. [2023-08-27 09:08:23,810 INFO L140 encePairwiseOnDemand]: 259/264 looper letters, 54 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-27 09:08:23,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 347 flow [2023-08-27 09:08:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:08:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:08:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-27 09:08:23,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2023-08-27 09:08:23,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-27 09:08:23,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-27 09:08:23,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:23,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-27 09:08:23,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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 09:08:23,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:23,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:23,816 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 178 flow. Second operand 3 states and 453 transitions. [2023-08-27 09:08:23,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 347 flow [2023-08-27 09:08:23,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 347 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:08:23,822 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 213 flow [2023-08-27 09:08:23,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-08-27 09:08:23,824 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-27 09:08:23,827 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 213 flow [2023-08-27 09:08:23,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 09:08:23,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:23,828 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:23,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:08:23,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:23,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash 437237865, now seen corresponding path program 1 times [2023-08-27 09:08:23,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:23,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425988729] [2023-08-27 09:08:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:23,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:23,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425988729] [2023-08-27 09:08:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425988729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049008933] [2023-08-27 09:08:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:23,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:23,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:23,913 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 09:08:23,938 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 09:08:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:24,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:08:24,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:24,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:08:24,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049008933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:24,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:08:24,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-08-27 09:08:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827633388] [2023-08-27 09:08:24,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:24,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:08:24,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:24,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:08:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:08:24,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 09:08:24,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 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 09:08:24,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:24,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 09:08:24,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:24,448 INFO L124 PetriNetUnfolderBase]: 935/1580 cut-off events. [2023-08-27 09:08:24,448 INFO L125 PetriNetUnfolderBase]: For 741/741 co-relation queries the response was YES. [2023-08-27 09:08:24,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4264 conditions, 1580 events. 935/1580 cut-off events. For 741/741 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6784 event pairs, 169 based on Foata normal form. 44/1282 useless extension candidates. Maximal degree in co-relation 4255. Up to 659 conditions per place. [2023-08-27 09:08:24,492 INFO L140 encePairwiseOnDemand]: 250/264 looper letters, 98 selfloop transitions, 32 changer transitions 3/135 dead transitions. [2023-08-27 09:08:24,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 135 transitions, 758 flow [2023-08-27 09:08:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:08:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:08:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1007 transitions. [2023-08-27 09:08:24,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5449134199134199 [2023-08-27 09:08:24,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1007 transitions. [2023-08-27 09:08:24,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1007 transitions. [2023-08-27 09:08:24,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:24,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1007 transitions. [2023-08-27 09:08:24,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.85714285714286) internal successors, (1007), 7 states have internal predecessors, (1007), 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 09:08:24,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 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 09:08:24,503 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 264.0) internal successors, (2112), 8 states have internal predecessors, (2112), 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 09:08:24,503 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 213 flow. Second operand 7 states and 1007 transitions. [2023-08-27 09:08:24,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 135 transitions, 758 flow [2023-08-27 09:08:24,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 135 transitions, 754 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:08:24,512 INFO L231 Difference]: Finished difference. Result has 57 places, 68 transitions, 438 flow [2023-08-27 09:08:24,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=57, PETRI_TRANSITIONS=68} [2023-08-27 09:08:24,513 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2023-08-27 09:08:24,513 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 68 transitions, 438 flow [2023-08-27 09:08:24,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 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 09:08:24,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:24,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:24,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 09:08:24,723 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 09:08:24,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:24,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash 472916021, now seen corresponding path program 1 times [2023-08-27 09:08:24,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:24,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481927004] [2023-08-27 09:08:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:24,800 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 09:08:24,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:24,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481927004] [2023-08-27 09:08:24,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481927004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:24,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:24,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:08:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503621492] [2023-08-27 09:08:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:24,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:08:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:24,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:08:24,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:08:24,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 264 [2023-08-27 09:08:24,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 68 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 09:08:24,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:24,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 264 [2023-08-27 09:08:24,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:24,918 INFO L124 PetriNetUnfolderBase]: 346/741 cut-off events. [2023-08-27 09:08:24,918 INFO L125 PetriNetUnfolderBase]: For 426/426 co-relation queries the response was YES. [2023-08-27 09:08:24,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 741 events. 346/741 cut-off events. For 426/426 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3453 event pairs, 102 based on Foata normal form. 52/725 useless extension candidates. Maximal degree in co-relation 2065. Up to 388 conditions per place. [2023-08-27 09:08:24,923 INFO L140 encePairwiseOnDemand]: 252/264 looper letters, 32 selfloop transitions, 16 changer transitions 0/56 dead transitions. [2023-08-27 09:08:24,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 365 flow [2023-08-27 09:08:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:08:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:08:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-08-27 09:08:24,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189393939393939 [2023-08-27 09:08:24,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-08-27 09:08:24,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-08-27 09:08:24,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:24,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-08-27 09:08:24,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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 09:08:24,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:24,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:24,928 INFO L175 Difference]: Start difference. First operand has 57 places, 68 transitions, 438 flow. Second operand 3 states and 411 transitions. [2023-08-27 09:08:24,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 365 flow [2023-08-27 09:08:24,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 332 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-27 09:08:24,933 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 244 flow [2023-08-27 09:08:24,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-27 09:08:24,934 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2023-08-27 09:08:24,934 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 244 flow [2023-08-27 09:08:24,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 09:08:24,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:24,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:24,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:08:24,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:24,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:24,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1658777371, now seen corresponding path program 1 times [2023-08-27 09:08:24,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:24,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395490637] [2023-08-27 09:08:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:25,035 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 09:08:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395490637] [2023-08-27 09:08:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395490637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:25,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:25,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:08:25,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239873873] [2023-08-27 09:08:25,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:08:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:25,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:08:25,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:08:25,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 09:08:25,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 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 09:08:25,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:25,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 09:08:25,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:25,214 INFO L124 PetriNetUnfolderBase]: 389/802 cut-off events. [2023-08-27 09:08:25,215 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2023-08-27 09:08:25,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 802 events. 389/802 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3608 event pairs, 79 based on Foata normal form. 12/770 useless extension candidates. Maximal degree in co-relation 2318. Up to 313 conditions per place. [2023-08-27 09:08:25,220 INFO L140 encePairwiseOnDemand]: 253/264 looper letters, 67 selfloop transitions, 12 changer transitions 3/84 dead transitions. [2023-08-27 09:08:25,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 518 flow [2023-08-27 09:08:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:08:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:08:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 829 transitions. [2023-08-27 09:08:25,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233585858585859 [2023-08-27 09:08:25,223 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 829 transitions. [2023-08-27 09:08:25,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 829 transitions. [2023-08-27 09:08:25,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:25,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 829 transitions. [2023-08-27 09:08:25,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.16666666666666) internal successors, (829), 6 states have internal predecessors, (829), 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 09:08:25,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:25,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:25,228 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 244 flow. Second operand 6 states and 829 transitions. [2023-08-27 09:08:25,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 518 flow [2023-08-27 09:08:25,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 484 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 09:08:25,233 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 271 flow [2023-08-27 09:08:25,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-08-27 09:08:25,235 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2023-08-27 09:08:25,235 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 271 flow [2023-08-27 09:08:25,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 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 09:08:25,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:25,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:25,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:08:25,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:25,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash -675772138, now seen corresponding path program 1 times [2023-08-27 09:08:25,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:25,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408877959] [2023-08-27 09:08:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:25,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:25,298 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 09:08:25,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408877959] [2023-08-27 09:08:25,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408877959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:25,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:25,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:08:25,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512899932] [2023-08-27 09:08:25,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:25,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:08:25,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:25,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:08:25,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:08:25,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 264 [2023-08-27 09:08:25,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 09:08:25,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:25,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 264 [2023-08-27 09:08:25,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:25,414 INFO L124 PetriNetUnfolderBase]: 334/745 cut-off events. [2023-08-27 09:08:25,414 INFO L125 PetriNetUnfolderBase]: For 614/618 co-relation queries the response was YES. [2023-08-27 09:08:25,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 745 events. 334/745 cut-off events. For 614/618 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3520 event pairs, 190 based on Foata normal form. 18/711 useless extension candidates. Maximal degree in co-relation 2114. Up to 498 conditions per place. [2023-08-27 09:08:25,418 INFO L140 encePairwiseOnDemand]: 259/264 looper letters, 51 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-27 09:08:25,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 445 flow [2023-08-27 09:08:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:08:25,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:08:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-27 09:08:25,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2023-08-27 09:08:25,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-27 09:08:25,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-27 09:08:25,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:25,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-27 09:08:25,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 09:08:25,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:25,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:25,424 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 271 flow. Second operand 3 states and 444 transitions. [2023-08-27 09:08:25,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 445 flow [2023-08-27 09:08:25,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 423 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 09:08:25,427 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 270 flow [2023-08-27 09:08:25,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-27 09:08:25,428 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2023-08-27 09:08:25,428 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 270 flow [2023-08-27 09:08:25,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 09:08:25,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:25,428 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:25,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 09:08:25,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:25,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:25,429 INFO L85 PathProgramCache]: Analyzing trace with hash -306404136, now seen corresponding path program 1 times [2023-08-27 09:08:25,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:25,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837378851] [2023-08-27 09:08:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:25,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:25,525 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 09:08:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:25,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837378851] [2023-08-27 09:08:25,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837378851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:25,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258429055] [2023-08-27 09:08:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:25,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:25,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:25,527 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 09:08:25,529 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 09:08:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:25,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 09:08:25,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:25,669 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 09:08:25,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:08:25,736 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 09:08:25,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258429055] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:08:25,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:08:25,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-08-27 09:08:25,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393083774] [2023-08-27 09:08:25,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:08:25,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 09:08:25,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:25,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 09:08:25,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-27 09:08:25,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 264 [2023-08-27 09:08:25,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 270 flow. Second operand has 12 states, 12 states have (on average 123.91666666666667) internal successors, (1487), 12 states have internal predecessors, (1487), 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 09:08:25,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:25,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 264 [2023-08-27 09:08:25,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:25,999 INFO L124 PetriNetUnfolderBase]: 410/873 cut-off events. [2023-08-27 09:08:26,000 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2023-08-27 09:08:26,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2539 conditions, 873 events. 410/873 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3973 event pairs, 71 based on Foata normal form. 46/875 useless extension candidates. Maximal degree in co-relation 2525. Up to 359 conditions per place. [2023-08-27 09:08:26,005 INFO L140 encePairwiseOnDemand]: 245/264 looper letters, 58 selfloop transitions, 26 changer transitions 3/89 dead transitions. [2023-08-27 09:08:26,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 557 flow [2023-08-27 09:08:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:08:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:08:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1161 transitions. [2023-08-27 09:08:26,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2023-08-27 09:08:26,008 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1161 transitions. [2023-08-27 09:08:26,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1161 transitions. [2023-08-27 09:08:26,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:26,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1161 transitions. [2023-08-27 09:08:26,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 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 09:08:26,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 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 09:08:26,015 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 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 09:08:26,015 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 270 flow. Second operand 9 states and 1161 transitions. [2023-08-27 09:08:26,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 557 flow [2023-08-27 09:08:26,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 89 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:08:26,018 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 323 flow [2023-08-27 09:08:26,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2023-08-27 09:08:26,019 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2023-08-27 09:08:26,019 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 323 flow [2023-08-27 09:08:26,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 123.91666666666667) internal successors, (1487), 12 states have internal predecessors, (1487), 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 09:08:26,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:26,020 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:26,028 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 09:08:26,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-27 09:08:26,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:26,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:26,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1415535615, now seen corresponding path program 1 times [2023-08-27 09:08:26,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:26,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754206288] [2023-08-27 09:08:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:26,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:26,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:26,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754206288] [2023-08-27 09:08:26,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754206288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:26,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:26,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 09:08:26,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975482271] [2023-08-27 09:08:26,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:26,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:08:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:26,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:08:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:08:26,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 264 [2023-08-27 09:08:26,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 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 09:08:26,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:26,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 264 [2023-08-27 09:08:26,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:26,581 INFO L124 PetriNetUnfolderBase]: 516/1085 cut-off events. [2023-08-27 09:08:26,581 INFO L125 PetriNetUnfolderBase]: For 964/964 co-relation queries the response was YES. [2023-08-27 09:08:26,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3588 conditions, 1085 events. 516/1085 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5218 event pairs, 105 based on Foata normal form. 20/1037 useless extension candidates. Maximal degree in co-relation 3574. Up to 395 conditions per place. [2023-08-27 09:08:26,588 INFO L140 encePairwiseOnDemand]: 249/264 looper letters, 81 selfloop transitions, 18 changer transitions 3/104 dead transitions. [2023-08-27 09:08:26,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 104 transitions, 732 flow [2023-08-27 09:08:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:08:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:08:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1177 transitions. [2023-08-27 09:08:26,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2023-08-27 09:08:26,592 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1177 transitions. [2023-08-27 09:08:26,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1177 transitions. [2023-08-27 09:08:26,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:26,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1177 transitions. [2023-08-27 09:08:26,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.77777777777777) internal successors, (1177), 9 states have internal predecessors, (1177), 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 09:08:26,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 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 09:08:26,600 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 264.0) internal successors, (2640), 10 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 09:08:26,600 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 323 flow. Second operand 9 states and 1177 transitions. [2023-08-27 09:08:26,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 104 transitions, 732 flow [2023-08-27 09:08:26,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 659 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-27 09:08:26,606 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 378 flow [2023-08-27 09:08:26,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=378, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-08-27 09:08:26,608 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2023-08-27 09:08:26,608 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 378 flow [2023-08-27 09:08:26,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 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 09:08:26,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:26,609 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:26,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 09:08:26,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:26,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1184207826, now seen corresponding path program 1 times [2023-08-27 09:08:26,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760751667] [2023-08-27 09:08:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:26,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:08:26,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:26,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760751667] [2023-08-27 09:08:26,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760751667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:26,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:26,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:08:26,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136785739] [2023-08-27 09:08:26,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:26,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:08:26,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:26,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:08:26,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:08:26,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 264 [2023-08-27 09:08:26,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 09:08:26,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:26,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 264 [2023-08-27 09:08:26,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:26,786 INFO L124 PetriNetUnfolderBase]: 424/931 cut-off events. [2023-08-27 09:08:26,787 INFO L125 PetriNetUnfolderBase]: For 1067/1069 co-relation queries the response was YES. [2023-08-27 09:08:26,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 931 events. 424/931 cut-off events. For 1067/1069 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4452 event pairs, 190 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 2996. Up to 440 conditions per place. [2023-08-27 09:08:26,793 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 59 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-08-27 09:08:26,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 630 flow [2023-08-27 09:08:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:08:26,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:08:26,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-08-27 09:08:26,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5618686868686869 [2023-08-27 09:08:26,795 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-08-27 09:08:26,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-08-27 09:08:26,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:26,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-08-27 09:08:26,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 09:08:26,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:26,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:26,800 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 378 flow. Second operand 3 states and 445 transitions. [2023-08-27 09:08:26,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 630 flow [2023-08-27 09:08:26,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:08:26,807 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 369 flow [2023-08-27 09:08:26,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-08-27 09:08:26,808 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2023-08-27 09:08:26,808 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 369 flow [2023-08-27 09:08:26,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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 09:08:26,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:26,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:26,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 09:08:26,809 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:26,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:26,809 INFO L85 PathProgramCache]: Analyzing trace with hash -114654468, now seen corresponding path program 1 times [2023-08-27 09:08:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:26,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497061804] [2023-08-27 09:08:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:08:26,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:26,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497061804] [2023-08-27 09:08:26,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497061804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:26,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:26,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:08:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449296982] [2023-08-27 09:08:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:26,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:08:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:26,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:08:26,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:08:26,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 264 [2023-08-27 09:08:26,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 09:08:26,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:26,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 264 [2023-08-27 09:08:26,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:27,010 INFO L124 PetriNetUnfolderBase]: 386/837 cut-off events. [2023-08-27 09:08:27,010 INFO L125 PetriNetUnfolderBase]: For 1130/1132 co-relation queries the response was YES. [2023-08-27 09:08:27,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 837 events. 386/837 cut-off events. For 1130/1132 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3804 event pairs, 96 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 2701. Up to 508 conditions per place. [2023-08-27 09:08:27,016 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 49 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2023-08-27 09:08:27,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 67 transitions, 535 flow [2023-08-27 09:08:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:08:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:08:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-08-27 09:08:27,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547979797979798 [2023-08-27 09:08:27,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-08-27 09:08:27,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-08-27 09:08:27,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:27,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-08-27 09:08:27,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 09:08:27,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:27,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 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 09:08:27,021 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 369 flow. Second operand 3 states and 434 transitions. [2023-08-27 09:08:27,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 67 transitions, 535 flow [2023-08-27 09:08:27,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:08:27,026 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 364 flow [2023-08-27 09:08:27,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=364, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-08-27 09:08:27,027 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2023-08-27 09:08:27,027 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 364 flow [2023-08-27 09:08:27,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 09:08:27,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:27,028 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:27,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 09:08:27,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:27,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:27,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1907734116, now seen corresponding path program 1 times [2023-08-27 09:08:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:27,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190936540] [2023-08-27 09:08:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:27,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190936540] [2023-08-27 09:08:27,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190936540] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:27,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576799354] [2023-08-27 09:08:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:27,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:27,093 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 09:08:27,096 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 09:08:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:27,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:08:27,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:27,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:08:27,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576799354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:27,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:08:27,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 09:08:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983107318] [2023-08-27 09:08:27,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:27,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:08:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:08:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:08:27,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 264 [2023-08-27 09:08:27,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 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 09:08:27,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:27,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 264 [2023-08-27 09:08:27,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:27,370 INFO L124 PetriNetUnfolderBase]: 352/757 cut-off events. [2023-08-27 09:08:27,370 INFO L125 PetriNetUnfolderBase]: For 1247/1253 co-relation queries the response was YES. [2023-08-27 09:08:27,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 757 events. 352/757 cut-off events. For 1247/1253 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3220 event pairs, 114 based on Foata normal form. 14/769 useless extension candidates. Maximal degree in co-relation 2503. Up to 585 conditions per place. [2023-08-27 09:08:27,377 INFO L140 encePairwiseOnDemand]: 261/264 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-27 09:08:27,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 499 flow [2023-08-27 09:08:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:08:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:08:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 577 transitions. [2023-08-27 09:08:27,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464015151515151 [2023-08-27 09:08:27,379 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 577 transitions. [2023-08-27 09:08:27,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 577 transitions. [2023-08-27 09:08:27,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:27,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 577 transitions. [2023-08-27 09:08:27,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 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 09:08:27,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 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 09:08:27,384 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 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 09:08:27,384 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 364 flow. Second operand 4 states and 577 transitions. [2023-08-27 09:08:27,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 499 flow [2023-08-27 09:08:27,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:08:27,389 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 345 flow [2023-08-27 09:08:27,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2023-08-27 09:08:27,391 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-08-27 09:08:27,391 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 345 flow [2023-08-27 09:08:27,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.25) internal successors, (553), 4 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 09:08:27,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:27,391 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:27,398 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 09:08:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:27,597 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:27,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1178191017, now seen corresponding path program 1 times [2023-08-27 09:08:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617701377] [2023-08-27 09:08:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:27,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:27,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617701377] [2023-08-27 09:08:27,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617701377] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:27,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263535173] [2023-08-27 09:08:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:27,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:27,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:27,656 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 09:08:27,658 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 09:08:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:27,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 09:08:27,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:27,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:08:27,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263535173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:27,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:08:27,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 09:08:27,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011911601] [2023-08-27 09:08:27,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:27,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:08:27,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:27,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:08:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:08:27,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 264 [2023-08-27 09:08:27,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 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 09:08:27,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:27,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 264 [2023-08-27 09:08:27,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:27,901 INFO L124 PetriNetUnfolderBase]: 325/688 cut-off events. [2023-08-27 09:08:27,901 INFO L125 PetriNetUnfolderBase]: For 1177/1183 co-relation queries the response was YES. [2023-08-27 09:08:27,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 688 events. 325/688 cut-off events. For 1177/1183 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2791 event pairs, 78 based on Foata normal form. 22/708 useless extension candidates. Maximal degree in co-relation 2229. Up to 399 conditions per place. [2023-08-27 09:08:27,906 INFO L140 encePairwiseOnDemand]: 261/264 looper letters, 56 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-27 09:08:27,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 544 flow [2023-08-27 09:08:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:08:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:08:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions. [2023-08-27 09:08:27,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-08-27 09:08:27,908 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions. [2023-08-27 09:08:27,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions. [2023-08-27 09:08:27,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:27,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions. [2023-08-27 09:08:27,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 09:08:27,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 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 09:08:27,912 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 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 09:08:27,912 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 345 flow. Second operand 4 states and 576 transitions. [2023-08-27 09:08:27,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 544 flow [2023-08-27 09:08:27,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 71 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:08:27,916 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 326 flow [2023-08-27 09:08:27,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2023-08-27 09:08:27,917 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 26 predicate places. [2023-08-27 09:08:27,917 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 326 flow [2023-08-27 09:08:27,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.75) internal successors, (547), 4 states have internal predecessors, (547), 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 09:08:27,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:27,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:27,931 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 09:08:28,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:28,123 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:28,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:28,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1339107025, now seen corresponding path program 1 times [2023-08-27 09:08:28,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:28,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521112449] [2023-08-27 09:08:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:28,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:08:28,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521112449] [2023-08-27 09:08:28,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521112449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114410139] [2023-08-27 09:08:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:28,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:28,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:28,190 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 09:08:28,192 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 09:08:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:28,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 09:08:28,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:08:28,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:08:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:08:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114410139] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:08:28,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:08:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-27 09:08:28,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011668080] [2023-08-27 09:08:28,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:08:28,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:08:28,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:28,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:08:28,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:08:28,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 264 [2023-08-27 09:08:28,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 138.85714285714286) internal successors, (972), 7 states have internal predecessors, (972), 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 09:08:28,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:28,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 264 [2023-08-27 09:08:28,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:28,515 INFO L124 PetriNetUnfolderBase]: 477/1058 cut-off events. [2023-08-27 09:08:28,515 INFO L125 PetriNetUnfolderBase]: For 1682/1688 co-relation queries the response was YES. [2023-08-27 09:08:28,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3480 conditions, 1058 events. 477/1058 cut-off events. For 1682/1688 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4134 event pairs, 132 based on Foata normal form. 120/1176 useless extension candidates. Maximal degree in co-relation 3462. Up to 278 conditions per place. [2023-08-27 09:08:28,523 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 92 selfloop transitions, 9 changer transitions 1/115 dead transitions. [2023-08-27 09:08:28,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 115 transitions, 918 flow [2023-08-27 09:08:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:08:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:08:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2023-08-27 09:08:28,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5542929292929293 [2023-08-27 09:08:28,525 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2023-08-27 09:08:28,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2023-08-27 09:08:28,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:28,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2023-08-27 09:08:28,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 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 09:08:28,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:28,530 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:28,530 INFO L175 Difference]: Start difference. First operand has 66 places, 50 transitions, 326 flow. Second operand 6 states and 878 transitions. [2023-08-27 09:08:28,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 115 transitions, 918 flow [2023-08-27 09:08:28,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 911 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:08:28,537 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 414 flow [2023-08-27 09:08:28,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-27 09:08:28,538 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2023-08-27 09:08:28,538 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 414 flow [2023-08-27 09:08:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.85714285714286) internal successors, (972), 7 states have internal predecessors, (972), 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 09:08:28,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:28,538 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:28,545 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 09:08:28,744 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 09:08:28,745 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:28,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash 375299925, now seen corresponding path program 2 times [2023-08-27 09:08:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:28,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829990064] [2023-08-27 09:08:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:08:28,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:28,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829990064] [2023-08-27 09:08:28,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829990064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:28,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:08:28,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:08:28,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740671596] [2023-08-27 09:08:28,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:28,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:08:28,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:08:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:08:28,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 09:08:28,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 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 09:08:28,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:28,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 09:08:28,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:29,022 INFO L124 PetriNetUnfolderBase]: 596/1241 cut-off events. [2023-08-27 09:08:29,022 INFO L125 PetriNetUnfolderBase]: For 2436/2436 co-relation queries the response was YES. [2023-08-27 09:08:29,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 1241 events. 596/1241 cut-off events. For 2436/2436 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4994 event pairs, 99 based on Foata normal form. 14/1255 useless extension candidates. Maximal degree in co-relation 4371. Up to 525 conditions per place. [2023-08-27 09:08:29,031 INFO L140 encePairwiseOnDemand]: 256/264 looper letters, 70 selfloop transitions, 19 changer transitions 3/94 dead transitions. [2023-08-27 09:08:29,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 94 transitions, 769 flow [2023-08-27 09:08:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:08:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:08:29,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 817 transitions. [2023-08-27 09:08:29,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157828282828283 [2023-08-27 09:08:29,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 817 transitions. [2023-08-27 09:08:29,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 817 transitions. [2023-08-27 09:08:29,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:29,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 817 transitions. [2023-08-27 09:08:29,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 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 09:08:29,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:29,039 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:29,039 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 414 flow. Second operand 6 states and 817 transitions. [2023-08-27 09:08:29,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 94 transitions, 769 flow [2023-08-27 09:08:29,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 761 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 09:08:29,045 INFO L231 Difference]: Finished difference. Result has 78 places, 57 transitions, 474 flow [2023-08-27 09:08:29,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=78, PETRI_TRANSITIONS=57} [2023-08-27 09:08:29,046 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2023-08-27 09:08:29,046 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 57 transitions, 474 flow [2023-08-27 09:08:29,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 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 09:08:29,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:29,046 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:29,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 09:08:29,047 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:29,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:29,047 INFO L85 PathProgramCache]: Analyzing trace with hash 709319315, now seen corresponding path program 3 times [2023-08-27 09:08:29,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:29,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700822639] [2023-08-27 09:08:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:29,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 09:08:29,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700822639] [2023-08-27 09:08:29,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700822639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:29,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478262889] [2023-08-27 09:08:29,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:08:29,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:29,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:29,173 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 09:08:29,196 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 09:08:29,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 09:08:29,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:08:29,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 09:08:29,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 09:08:29,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 09:08:29,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478262889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:08:29,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 09:08:29,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-27 09:08:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795953908] [2023-08-27 09:08:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:08:29,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:08:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:29,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:08:29,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-27 09:08:29,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 264 [2023-08-27 09:08:29,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 474 flow. Second operand has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 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 09:08:29,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:29,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 264 [2023-08-27 09:08:29,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:29,536 INFO L124 PetriNetUnfolderBase]: 582/1213 cut-off events. [2023-08-27 09:08:29,536 INFO L125 PetriNetUnfolderBase]: For 2794/2794 co-relation queries the response was YES. [2023-08-27 09:08:29,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4495 conditions, 1213 events. 582/1213 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4845 event pairs, 197 based on Foata normal form. 18/1231 useless extension candidates. Maximal degree in co-relation 4472. Up to 612 conditions per place. [2023-08-27 09:08:29,545 INFO L140 encePairwiseOnDemand]: 258/264 looper letters, 67 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2023-08-27 09:08:29,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 735 flow [2023-08-27 09:08:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:08:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:08:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 804 transitions. [2023-08-27 09:08:29,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2023-08-27 09:08:29,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 804 transitions. [2023-08-27 09:08:29,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 804 transitions. [2023-08-27 09:08:29,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:29,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 804 transitions. [2023-08-27 09:08:29,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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 09:08:29,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:29,552 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:29,552 INFO L175 Difference]: Start difference. First operand has 78 places, 57 transitions, 474 flow. Second operand 6 states and 804 transitions. [2023-08-27 09:08:29,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 735 flow [2023-08-27 09:08:29,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 82 transitions, 707 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 09:08:29,559 INFO L231 Difference]: Finished difference. Result has 78 places, 56 transitions, 458 flow [2023-08-27 09:08:29,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=78, PETRI_TRANSITIONS=56} [2023-08-27 09:08:29,560 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2023-08-27 09:08:29,560 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 56 transitions, 458 flow [2023-08-27 09:08:29,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 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 09:08:29,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:29,561 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:29,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 09:08:29,766 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,SelfDestructingSolverStorable15 [2023-08-27 09:08:29,767 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:29,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash 484373487, now seen corresponding path program 2 times [2023-08-27 09:08:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:29,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860633599] [2023-08-27 09:08:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:08:29,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860633599] [2023-08-27 09:08:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860633599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955182378] [2023-08-27 09:08:29,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 09:08:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:29,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:29,874 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 09:08:29,877 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 09:08:30,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 09:08:30,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:08:30,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 09:08:30,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:08:30,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:08:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 22 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:08:30,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955182378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:08:30,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:08:30,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2023-08-27 09:08:30,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543384271] [2023-08-27 09:08:30,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:08:30,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:08:30,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:30,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:08:30,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:08:30,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 264 [2023-08-27 09:08:30,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 56 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 138.85714285714286) internal successors, (972), 7 states have internal predecessors, (972), 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 09:08:30,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:30,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 264 [2023-08-27 09:08:30,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:30,420 INFO L124 PetriNetUnfolderBase]: 745/1742 cut-off events. [2023-08-27 09:08:30,421 INFO L125 PetriNetUnfolderBase]: For 4647/4667 co-relation queries the response was YES. [2023-08-27 09:08:30,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 1742 events. 745/1742 cut-off events. For 4647/4667 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9086 event pairs, 177 based on Foata normal form. 118/1846 useless extension candidates. Maximal degree in co-relation 6355. Up to 628 conditions per place. [2023-08-27 09:08:30,445 INFO L140 encePairwiseOnDemand]: 260/264 looper letters, 102 selfloop transitions, 9 changer transitions 0/124 dead transitions. [2023-08-27 09:08:30,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 1249 flow [2023-08-27 09:08:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:08:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:08:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 861 transitions. [2023-08-27 09:08:30,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435606060606061 [2023-08-27 09:08:30,447 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 861 transitions. [2023-08-27 09:08:30,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 861 transitions. [2023-08-27 09:08:30,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:30,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 861 transitions. [2023-08-27 09:08:30,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 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 09:08:30,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:30,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 264.0) internal successors, (1848), 7 states have internal predecessors, (1848), 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 09:08:30,453 INFO L175 Difference]: Start difference. First operand has 78 places, 56 transitions, 458 flow. Second operand 6 states and 861 transitions. [2023-08-27 09:08:30,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 1249 flow [2023-08-27 09:08:30,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 1199 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:08:30,462 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 538 flow [2023-08-27 09:08:30,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2023-08-27 09:08:30,463 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2023-08-27 09:08:30,463 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 538 flow [2023-08-27 09:08:30,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.85714285714286) internal successors, (972), 7 states have internal predecessors, (972), 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 09:08:30,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:30,463 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:30,472 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 09:08:30,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:30,670 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:30,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:30,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1717811177, now seen corresponding path program 3 times [2023-08-27 09:08:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:30,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229912079] [2023-08-27 09:08:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:30,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-27 09:08:30,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229912079] [2023-08-27 09:08:30,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229912079] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906004137] [2023-08-27 09:08:30,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:08:30,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:30,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:30,978 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 09:08:30,980 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 09:08:31,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-27 09:08:31,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:08:31,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 09:08:31,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-27 09:08:31,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:08:31,472 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-27 09:08:31,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906004137] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:08:31,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:08:31,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 9 [2023-08-27 09:08:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055966177] [2023-08-27 09:08:31,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:08:31,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 09:08:31,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 09:08:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-27 09:08:31,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 264 [2023-08-27 09:08:31,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 538 flow. Second operand has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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 09:08:31,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:31,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 264 [2023-08-27 09:08:31,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:31,744 INFO L124 PetriNetUnfolderBase]: 445/984 cut-off events. [2023-08-27 09:08:31,744 INFO L125 PetriNetUnfolderBase]: For 2896/2896 co-relation queries the response was YES. [2023-08-27 09:08:31,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 984 events. 445/984 cut-off events. For 2896/2896 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3736 event pairs, 123 based on Foata normal form. 40/1024 useless extension candidates. Maximal degree in co-relation 3958. Up to 414 conditions per place. [2023-08-27 09:08:31,753 INFO L140 encePairwiseOnDemand]: 255/264 looper letters, 64 selfloop transitions, 24 changer transitions 0/90 dead transitions. [2023-08-27 09:08:31,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 847 flow [2023-08-27 09:08:31,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 09:08:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 09:08:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2023-08-27 09:08:31,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834280303030303 [2023-08-27 09:08:31,756 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2023-08-27 09:08:31,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2023-08-27 09:08:31,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:31,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2023-08-27 09:08:31,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 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 09:08:31,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 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 09:08:31,761 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 264.0) internal successors, (2376), 9 states have internal predecessors, (2376), 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 09:08:31,761 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 538 flow. Second operand 8 states and 1021 transitions. [2023-08-27 09:08:31,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 847 flow [2023-08-27 09:08:31,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 794 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-27 09:08:31,769 INFO L231 Difference]: Finished difference. Result has 85 places, 55 transitions, 494 flow [2023-08-27 09:08:31,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=494, PETRI_PLACES=85, PETRI_TRANSITIONS=55} [2023-08-27 09:08:31,773 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 45 predicate places. [2023-08-27 09:08:31,773 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 55 transitions, 494 flow [2023-08-27 09:08:31,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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 09:08:31,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:08:31,773 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:31,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 09:08:31,980 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,SelfDestructingSolverStorable17 [2023-08-27 09:08:31,980 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 09:08:31,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:08:31,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1726492601, now seen corresponding path program 4 times [2023-08-27 09:08:31,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:08:31,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223774035] [2023-08-27 09:08:31,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:08:31,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:08:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:08:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:32,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:08:32,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223774035] [2023-08-27 09:08:32,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223774035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:08:32,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684710989] [2023-08-27 09:08:32,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 09:08:32,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:08:32,529 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 09:08:32,556 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 09:08:32,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 09:08:32,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:08:32,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 09:08:32,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:08:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:33,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:08:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:08:35,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684710989] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:08:35,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:08:35,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-08-27 09:08:35,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692422043] [2023-08-27 09:08:35,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:08:35,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-27 09:08:35,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:08:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-27 09:08:35,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2023-08-27 09:08:35,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 264 [2023-08-27 09:08:35,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 55 transitions, 494 flow. Second operand has 31 states, 31 states have (on average 131.90322580645162) internal successors, (4089), 31 states have internal predecessors, (4089), 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 09:08:35,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:08:35,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 264 [2023-08-27 09:08:35,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:08:36,398 INFO L124 PetriNetUnfolderBase]: 330/816 cut-off events. [2023-08-27 09:08:36,399 INFO L125 PetriNetUnfolderBase]: For 2302/2316 co-relation queries the response was YES. [2023-08-27 09:08:36,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3220 conditions, 816 events. 330/816 cut-off events. For 2302/2316 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3128 event pairs, 23 based on Foata normal form. 39/853 useless extension candidates. Maximal degree in co-relation 3195. Up to 165 conditions per place. [2023-08-27 09:08:36,403 INFO L140 encePairwiseOnDemand]: 257/264 looper letters, 0 selfloop transitions, 0 changer transitions 116/116 dead transitions. [2023-08-27 09:08:36,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 1090 flow [2023-08-27 09:08:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 09:08:36,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 09:08:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1621 transitions. [2023-08-27 09:08:36,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116792929292929 [2023-08-27 09:08:36,407 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1621 transitions. [2023-08-27 09:08:36,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1621 transitions. [2023-08-27 09:08:36,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:08:36,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1621 transitions. [2023-08-27 09:08:36,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 135.08333333333334) internal successors, (1621), 12 states have internal predecessors, (1621), 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 09:08:36,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 264.0) internal successors, (3432), 13 states have internal predecessors, (3432), 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 09:08:36,416 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 264.0) internal successors, (3432), 13 states have internal predecessors, (3432), 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 09:08:36,416 INFO L175 Difference]: Start difference. First operand has 85 places, 55 transitions, 494 flow. Second operand 12 states and 1621 transitions. [2023-08-27 09:08:36,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 1090 flow [2023-08-27 09:08:36,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 116 transitions, 993 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 09:08:36,424 INFO L231 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2023-08-27 09:08:36,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=264, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2023-08-27 09:08:36,425 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2023-08-27 09:08:36,425 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2023-08-27 09:08:36,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 131.90322580645162) internal successors, (4089), 31 states have internal predecessors, (4089), 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 09:08:36,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 09:08:36,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 09:08:36,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 09:08:36,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 09:08:36,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 09:08:36,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 09:08:36,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 09:08:36,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 09:08:36,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 09:08:36,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 09:08:36,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 09:08:36,437 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 09:08:36,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:08:36,636 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:08:36,642 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:08:36,642 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:08:36,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:08:36 BasicIcfg [2023-08-27 09:08:36,646 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:08:36,647 INFO L158 Benchmark]: Toolchain (without parser) took 21392.67ms. Allocated memory was 369.1MB in the beginning and 641.7MB in the end (delta: 272.6MB). Free memory was 322.1MB in the beginning and 362.6MB in the end (delta: -40.5MB). Peak memory consumption was 235.7MB. Max. memory is 16.0GB. [2023-08-27 09:08:36,647 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 369.1MB. Free memory was 346.5MB in the beginning and 346.4MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:08:36,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.16ms. Allocated memory is still 369.1MB. Free memory was 321.0MB in the beginning and 294.8MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 09:08:36,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.07ms. Allocated memory is still 369.1MB. Free memory was 294.8MB in the beginning and 292.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:08:36,648 INFO L158 Benchmark]: Boogie Preprocessor took 56.13ms. Allocated memory is still 369.1MB. Free memory was 292.7MB in the beginning and 290.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:08:36,649 INFO L158 Benchmark]: RCFGBuilder took 551.35ms. Allocated memory is still 369.1MB. Free memory was 290.6MB in the beginning and 272.1MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 09:08:36,649 INFO L158 Benchmark]: TraceAbstraction took 20143.18ms. Allocated memory was 369.1MB in the beginning and 641.7MB in the end (delta: 272.6MB). Free memory was 270.7MB in the beginning and 362.6MB in the end (delta: -91.9MB). Peak memory consumption was 183.3MB. Max. memory is 16.0GB. [2023-08-27 09:08:36,653 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 369.1MB. Free memory was 346.5MB in the beginning and 346.4MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 582.16ms. Allocated memory is still 369.1MB. Free memory was 321.0MB in the beginning and 294.8MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.07ms. Allocated memory is still 369.1MB. Free memory was 294.8MB in the beginning and 292.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 56.13ms. Allocated memory is still 369.1MB. Free memory was 292.7MB in the beginning and 290.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 551.35ms. Allocated memory is still 369.1MB. Free memory was 290.6MB in the beginning and 272.1MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 20143.18ms. Allocated memory was 369.1MB in the beginning and 641.7MB in the end (delta: 272.6MB). Free memory was 270.7MB in the beginning and 362.6MB in the end (delta: -91.9MB). Peak memory consumption was 183.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 218]: Unsoundness Warning unspecified type, defaulting to int C: short [218] - GenericResultAtLocation [Line: 219]: Unsoundness Warning unspecified type, defaulting to int C: short [219] - GenericResultAtLocation [Line: 730]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [730] - GenericResultAtLocation [Line: 871]: Unsoundness Warning unspecified type, defaulting to int C: unsigned long [871] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 135 PlacesBefore, 40 PlacesAfterwards, 136 TransitionsBefore, 38 TransitionsAfterwards, 3074 CoEnabledTransitionPairs, 8 FixpointIterations, 55 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 113 TotalNumberOfCompositions, 7564 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4506, independent: 4262, independent conditional: 0, independent unconditional: 4262, dependent: 244, dependent conditional: 0, dependent unconditional: 244, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1712, independent: 1671, independent conditional: 0, independent unconditional: 1671, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4506, independent: 2591, independent conditional: 0, independent unconditional: 2591, dependent: 203, dependent conditional: 0, dependent unconditional: 203, unknown: 1712, unknown conditional: 0, unknown unconditional: 1712] , Statistics on independence cache: Total cache size (in pairs): 208, Positive cache size: 189, Positive conditional cache size: 0, Positive unconditional cache size: 189, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 202 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.0s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 971 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 971 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3215 IncrementalHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 7 mSDtfsCounter, 3215 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 580 GetRequests, 433 SyntacticMatches, 24 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=538occurred in iteration=17, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 707 NumberOfCodeBlocks, 707 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 870 ConstructedInterpolants, 33 QuantifiedInterpolants, 5153 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2714 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 33 InterpolantComputations, 14 PerfectInterpolantSequences, 325/660 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 09:08:36,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...