/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 PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 15:04:36,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 15:04:36,409 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 15:04:36,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 15:04:36,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 15:04:36,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 15:04:36,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 15:04:36,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 15:04:36,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 15:04:36,439 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 15:04:36,440 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 15:04:36,440 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 15:04:36,440 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 15:04:36,440 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 15:04:36,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 15:04:36,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 15:04:36,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 15:04:36,441 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 15:04:36,441 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 15:04:36,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 15:04:36,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 15:04:36,444 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 15:04:36,444 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 15:04:36,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 15:04:36,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 15:04:36,445 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 15:04:36,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 15:04:36,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:04:36,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 15:04:36,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 15:04:36,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 15:04:36,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 15:04:36,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 15:04:36,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 15:04:36,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 15:04:36,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 15:04:36,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 15:04:36,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 15:04:36,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 15:04:36,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 15:04:36,678 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 15:04:36,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c [2023-08-27 15:04:37,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 15:04:37,738 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 15:04:37,739 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive.wvr.c [2023-08-27 15:04:37,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d93813e/dd8232a2340348dd9fb1b03c2237b583/FLAG6276fa71c [2023-08-27 15:04:37,764 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d93813e/dd8232a2340348dd9fb1b03c2237b583 [2023-08-27 15:04:37,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 15:04:37,769 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 15:04:37,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 15:04:37,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 15:04:37,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 15:04:37,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:37,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c14254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37, skipping insertion in model container [2023-08-27 15:04:37,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:37,798 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 15:04:37,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:04:37,960 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 15:04:37,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:04:37,995 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 15:04:37,995 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 15:04:37,999 INFO L206 MainTranslator]: Completed translation [2023-08-27 15:04:38,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37 WrapperNode [2023-08-27 15:04:38,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 15:04:38,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 15:04:38,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 15:04:38,001 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 15:04:38,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,041 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 177 [2023-08-27 15:04:38,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 15:04:38,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 15:04:38,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 15:04:38,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 15:04:38,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 15:04:38,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 15:04:38,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 15:04:38,067 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 15:04:38,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (1/1) ... [2023-08-27 15:04:38,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:04:38,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:04:38,099 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 15:04:38,104 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 15:04:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 15:04:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 15:04:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 15:04:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 15:04:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 15:04:38,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 15:04:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 15:04:38,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 15:04:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 15:04:38,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 15:04:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 15:04:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 15:04:38,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 15:04:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 15:04:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 15:04:38,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 15:04:38,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 15:04:38,124 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 15:04:38,190 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 15:04:38,191 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 15:04:38,473 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 15:04:38,566 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 15:04:38,566 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 15:04:38,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:04:38 BoogieIcfgContainer [2023-08-27 15:04:38,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 15:04:38,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 15:04:38,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 15:04:38,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 15:04:38,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:04:37" (1/3) ... [2023-08-27 15:04:38,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67984b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:04:38, skipping insertion in model container [2023-08-27 15:04:38,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:04:37" (2/3) ... [2023-08-27 15:04:38,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67984b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:04:38, skipping insertion in model container [2023-08-27 15:04:38,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:04:38" (3/3) ... [2023-08-27 15:04:38,574 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2023-08-27 15:04:38,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 15:04:38,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 15:04:38,587 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 15:04:38,665 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 15:04:38,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 150 transitions, 324 flow [2023-08-27 15:04:38,754 INFO L124 PetriNetUnfolderBase]: 10/147 cut-off events. [2023-08-27 15:04:38,754 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 15:04:38,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 10/147 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-08-27 15:04:38,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 150 transitions, 324 flow [2023-08-27 15:04:38,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 136 transitions, 290 flow [2023-08-27 15:04:38,765 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 15:04:38,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 136 transitions, 290 flow [2023-08-27 15:04:38,777 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 136 transitions, 290 flow [2023-08-27 15:04:38,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 136 transitions, 290 flow [2023-08-27 15:04:38,807 INFO L124 PetriNetUnfolderBase]: 10/136 cut-off events. [2023-08-27 15:04:38,808 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 15:04:38,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 10/136 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 141 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-08-27 15:04:38,809 INFO L119 LiptonReduction]: Number of co-enabled transitions 1782 [2023-08-27 15:04:43,084 INFO L134 LiptonReduction]: Checked pairs total: 3127 [2023-08-27 15:04:43,084 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-27 15:04:43,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 15:04:43,096 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;@7d77585a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 15:04:43,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 15:04:43,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 15:04:43,099 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 15:04:43,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 15:04:43,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:43,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 15:04:43,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:43,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:43,102 INFO L85 PathProgramCache]: Analyzing trace with hash 20845, now seen corresponding path program 1 times [2023-08-27 15:04:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:43,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703139667] [2023-08-27 15:04:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:43,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:43,315 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 15:04:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703139667] [2023-08-27 15:04:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703139667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:04:43,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:04:43,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:04:43,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712528688] [2023-08-27 15:04:43,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:04:43,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:04:43,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:04:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:04:43,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 281 [2023-08-27 15:04:43,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 15:04:43,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:43,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 281 [2023-08-27 15:04:43,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:43,484 INFO L124 PetriNetUnfolderBase]: 426/690 cut-off events. [2023-08-27 15:04:43,484 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-27 15:04:43,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 690 events. 426/690 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3304 event pairs, 405 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 1300. Up to 670 conditions per place. [2023-08-27 15:04:43,492 INFO L140 encePairwiseOnDemand]: 273/281 looper letters, 27 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-08-27 15:04:43,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 33 transitions, 144 flow [2023-08-27 15:04:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:04:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:04:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-27 15:04:43,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46144721233689207 [2023-08-27 15:04:43,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-27 15:04:43,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-27 15:04:43,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:43,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-27 15:04:43,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 15:04:43,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 15:04:43,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 15:04:43,521 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 86 flow. Second operand 3 states and 389 transitions. [2023-08-27 15:04:43,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 33 transitions, 144 flow [2023-08-27 15:04:43,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 132 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 15:04:43,527 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 89 flow [2023-08-27 15:04:43,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-08-27 15:04:43,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2023-08-27 15:04:43,531 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 89 flow [2023-08-27 15:04:43,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 15:04:43,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:43,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 15:04:43,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 15:04:43,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:43,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:43,538 INFO L85 PathProgramCache]: Analyzing trace with hash 647014, now seen corresponding path program 1 times [2023-08-27 15:04:43,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:43,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666149294] [2023-08-27 15:04:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:43,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:43,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:43,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666149294] [2023-08-27 15:04:43,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666149294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:04:43,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662913439] [2023-08-27 15:04:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:43,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:43,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:04:43,615 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 15:04:43,646 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 15:04:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:43,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 15:04:43,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:04:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:43,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:04:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:43,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662913439] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:04:43,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:04:43,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 15:04:43,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046646938] [2023-08-27 15:04:43,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:04:43,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:04:43,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:43,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:04:43,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:04:43,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 281 [2023-08-27 15:04:43,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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 15:04:43,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:43,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 281 [2023-08-27 15:04:43,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:43,883 INFO L124 PetriNetUnfolderBase]: 432/699 cut-off events. [2023-08-27 15:04:43,883 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 15:04:43,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 699 events. 432/699 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3331 event pairs, 405 based on Foata normal form. 0/416 useless extension candidates. Maximal degree in co-relation 1389. Up to 672 conditions per place. [2023-08-27 15:04:43,886 INFO L140 encePairwiseOnDemand]: 276/281 looper letters, 26 selfloop transitions, 13 changer transitions 0/42 dead transitions. [2023-08-27 15:04:43,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 203 flow [2023-08-27 15:04:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:04:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:04:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 868 transitions. [2023-08-27 15:04:43,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412811387900356 [2023-08-27 15:04:43,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 868 transitions. [2023-08-27 15:04:43,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 868 transitions. [2023-08-27 15:04:43,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:43,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 868 transitions. [2023-08-27 15:04:43,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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 15:04:43,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 15:04:43,893 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 15:04:43,893 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 89 flow. Second operand 7 states and 868 transitions. [2023-08-27 15:04:43,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 203 flow [2023-08-27 15:04:43,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 15:04:43,895 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 168 flow [2023-08-27 15:04:43,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-27 15:04:43,895 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-27 15:04:43,895 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 168 flow [2023-08-27 15:04:43,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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 15:04:43,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:43,896 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-27 15:04:43,903 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 15:04:44,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:44,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:44,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash 20058254, now seen corresponding path program 1 times [2023-08-27 15:04:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:44,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952117968] [2023-08-27 15:04:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:44,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:44,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952117968] [2023-08-27 15:04:44,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952117968] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:04:44,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953133603] [2023-08-27 15:04:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:44,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:44,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:04:44,222 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 15:04:44,223 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 15:04:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:44,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 15:04:44,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:04:44,288 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 15:04:44,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:04:44,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953133603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:04:44,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:04:44,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 15:04:44,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719842319] [2023-08-27 15:04:44,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:04:44,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:04:44,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:44,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:04:44,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:04:44,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 281 [2023-08-27 15:04:44,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 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 15:04:44,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:44,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 281 [2023-08-27 15:04:44,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:44,391 INFO L124 PetriNetUnfolderBase]: 429/695 cut-off events. [2023-08-27 15:04:44,391 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 15:04:44,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1451 conditions, 695 events. 429/695 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3341 event pairs, 405 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 1415. Up to 669 conditions per place. [2023-08-27 15:04:44,396 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-08-27 15:04:44,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 211 flow [2023-08-27 15:04:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:04:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:04:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 623 transitions. [2023-08-27 15:04:44,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44341637010676155 [2023-08-27 15:04:44,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 623 transitions. [2023-08-27 15:04:44,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 623 transitions. [2023-08-27 15:04:44,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:44,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 623 transitions. [2023-08-27 15:04:44,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 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 15:04:44,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 15:04:44,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 15:04:44,401 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 168 flow. Second operand 5 states and 623 transitions. [2023-08-27 15:04:44,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 211 flow [2023-08-27 15:04:44,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 190 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 15:04:44,404 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 136 flow [2023-08-27 15:04:44,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-27 15:04:44,405 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-27 15:04:44,405 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 136 flow [2023-08-27 15:04:44,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 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 15:04:44,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:44,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 15:04:44,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 15:04:44,612 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,SelfDestructingSolverStorable2 [2023-08-27 15:04:44,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:44,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash 621714970, now seen corresponding path program 1 times [2023-08-27 15:04:44,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:44,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310380822] [2023-08-27 15:04:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:44,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:44,681 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 15:04:44,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:44,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310380822] [2023-08-27 15:04:44,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310380822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:04:44,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:04:44,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:04:44,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295686020] [2023-08-27 15:04:44,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:04:44,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:04:44,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:44,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:04:44,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:04:44,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 281 [2023-08-27 15:04:44,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 15:04:44,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:44,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 281 [2023-08-27 15:04:44,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:44,778 INFO L124 PetriNetUnfolderBase]: 540/844 cut-off events. [2023-08-27 15:04:44,778 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 15:04:44,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 844 events. 540/844 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3751 event pairs, 181 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 1687. Up to 593 conditions per place. [2023-08-27 15:04:44,782 INFO L140 encePairwiseOnDemand]: 275/281 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-27 15:04:44,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 270 flow [2023-08-27 15:04:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:04:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:04:44,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-08-27 15:04:44,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851720047449585 [2023-08-27 15:04:44,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-08-27 15:04:44,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-08-27 15:04:44,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:44,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-08-27 15:04:44,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 15:04:44,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 15:04:44,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 15:04:44,786 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 136 flow. Second operand 3 states and 409 transitions. [2023-08-27 15:04:44,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 270 flow [2023-08-27 15:04:44,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 258 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 15:04:44,787 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 142 flow [2023-08-27 15:04:44,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-27 15:04:44,788 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-27 15:04:44,788 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 142 flow [2023-08-27 15:04:44,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 15:04:44,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:44,788 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 15:04:44,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 15:04:44,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:44,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:44,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2096138157, now seen corresponding path program 2 times [2023-08-27 15:04:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:44,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877009897] [2023-08-27 15:04:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:44,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:44,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:44,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877009897] [2023-08-27 15:04:44,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877009897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:04:44,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986848413] [2023-08-27 15:04:44,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:04:44,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:44,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:04:44,874 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 15:04:44,876 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 15:04:44,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 15:04:44,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:04:44,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 15:04:44,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:04:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 15:04:44,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:04:44,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986848413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:04:44,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:04:44,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 15:04:44,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088584223] [2023-08-27 15:04:44,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:04:44,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:04:44,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:44,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:04:44,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 15:04:44,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 281 [2023-08-27 15:04:44,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 15:04:44,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:44,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 281 [2023-08-27 15:04:44,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:45,042 INFO L124 PetriNetUnfolderBase]: 540/833 cut-off events. [2023-08-27 15:04:45,042 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-08-27 15:04:45,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 833 events. 540/833 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3630 event pairs, 375 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 1937. Up to 802 conditions per place. [2023-08-27 15:04:45,046 INFO L140 encePairwiseOnDemand]: 279/281 looper letters, 34 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 15:04:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 202 flow [2023-08-27 15:04:45,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:04:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:04:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-27 15:04:45,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555160142348754 [2023-08-27 15:04:45,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-27 15:04:45,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-27 15:04:45,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:45,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-27 15:04:45,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 15:04:45,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 15:04:45,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 15:04:45,051 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 142 flow. Second operand 3 states and 384 transitions. [2023-08-27 15:04:45,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 202 flow [2023-08-27 15:04:45,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 184 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 15:04:45,052 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 116 flow [2023-08-27 15:04:45,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-27 15:04:45,053 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-27 15:04:45,053 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 116 flow [2023-08-27 15:04:45,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 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 15:04:45,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:45,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:04:45,058 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 15:04:45,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:45,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:45,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash 472414885, now seen corresponding path program 1 times [2023-08-27 15:04:45,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:45,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108149470] [2023-08-27 15:04:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:45,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:45,329 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 15:04:45,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:45,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108149470] [2023-08-27 15:04:45,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108149470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:04:45,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:04:45,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 15:04:45,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070986831] [2023-08-27 15:04:45,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:04:45,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 15:04:45,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:45,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 15:04:45,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 15:04:45,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 281 [2023-08-27 15:04:45,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 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 15:04:45,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:45,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 281 [2023-08-27 15:04:45,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:45,430 INFO L124 PetriNetUnfolderBase]: 600/953 cut-off events. [2023-08-27 15:04:45,431 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-08-27 15:04:45,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 953 events. 600/953 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4409 event pairs, 436 based on Foata normal form. 16/704 useless extension candidates. Maximal degree in co-relation 2173. Up to 801 conditions per place. [2023-08-27 15:04:45,434 INFO L140 encePairwiseOnDemand]: 275/281 looper letters, 48 selfloop transitions, 3 changer transitions 0/54 dead transitions. [2023-08-27 15:04:45,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 256 flow [2023-08-27 15:04:45,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:04:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:04:45,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 487 transitions. [2023-08-27 15:04:45,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332740213523132 [2023-08-27 15:04:45,436 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 487 transitions. [2023-08-27 15:04:45,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 487 transitions. [2023-08-27 15:04:45,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:45,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 487 transitions. [2023-08-27 15:04:45,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 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 15:04:45,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 15:04:45,438 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 15:04:45,438 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 116 flow. Second operand 4 states and 487 transitions. [2023-08-27 15:04:45,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 256 flow [2023-08-27 15:04:45,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:04:45,440 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 128 flow [2023-08-27 15:04:45,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-27 15:04:45,442 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-27 15:04:45,442 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 128 flow [2023-08-27 15:04:45,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 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 15:04:45,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:45,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:04:45,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 15:04:45,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:45,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash -34226100, now seen corresponding path program 1 times [2023-08-27 15:04:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:45,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097321989] [2023-08-27 15:04:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:45,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:45,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:45,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097321989] [2023-08-27 15:04:45,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097321989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:04:45,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934532484] [2023-08-27 15:04:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:45,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:45,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:04:45,527 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 15:04:45,529 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 15:04:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:45,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 15:04:45,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:04:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:04:45,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:04:45,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934532484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:04:45,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:04:45,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-27 15:04:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526623185] [2023-08-27 15:04:45,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:04:45,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:04:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:04:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:04:45,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 281 [2023-08-27 15:04:45,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 15:04:45,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:45,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 281 [2023-08-27 15:04:45,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:45,651 INFO L124 PetriNetUnfolderBase]: 312/535 cut-off events. [2023-08-27 15:04:45,651 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-08-27 15:04:45,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 535 events. 312/535 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2209 event pairs, 226 based on Foata normal form. 50/535 useless extension candidates. Maximal degree in co-relation 1217. Up to 509 conditions per place. [2023-08-27 15:04:45,653 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 31 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-27 15:04:45,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 180 flow [2023-08-27 15:04:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:04:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:04:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-27 15:04:45,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465005931198102 [2023-08-27 15:04:45,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-27 15:04:45,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-27 15:04:45,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:45,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-27 15:04:45,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 15:04:45,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 15:04:45,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 15:04:45,656 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 128 flow. Second operand 3 states and 392 transitions. [2023-08-27 15:04:45,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 180 flow [2023-08-27 15:04:45,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:04:45,657 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 113 flow [2023-08-27 15:04:45,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-08-27 15:04:45,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-27 15:04:45,658 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 113 flow [2023-08-27 15:04:45,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 15:04:45,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:45,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:04:45,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 15:04:45,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:45,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:45,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1265137614, now seen corresponding path program 1 times [2023-08-27 15:04:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105380864] [2023-08-27 15:04:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:45,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:46,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:46,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105380864] [2023-08-27 15:04:46,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105380864] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:04:46,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871486578] [2023-08-27 15:04:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:46,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:04:46,226 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 15:04:46,227 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 15:04:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:46,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-27 15:04:46,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:04:46,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 15:04:46,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:04:46,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:04:46,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:04:46,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:04:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:46,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:04:46,731 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:04:46,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-08-27 15:04:46,741 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:04:46,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2023-08-27 15:04:46,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2023-08-27 15:04:46,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-08-27 15:04:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:46,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871486578] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:04:46,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:04:46,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 15:04:46,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743217077] [2023-08-27 15:04:46,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:04:46,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 15:04:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 15:04:46,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=220, Unknown=1, NotChecked=0, Total=272 [2023-08-27 15:04:46,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 281 [2023-08-27 15:04:46,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 113 flow. Second operand has 17 states, 17 states have (on average 86.58823529411765) internal successors, (1472), 17 states have internal predecessors, (1472), 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 15:04:46,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:46,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 281 [2023-08-27 15:04:46,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:47,638 INFO L124 PetriNetUnfolderBase]: 470/797 cut-off events. [2023-08-27 15:04:47,638 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-08-27 15:04:47,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 797 events. 470/797 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3702 event pairs, 139 based on Foata normal form. 0/716 useless extension candidates. Maximal degree in co-relation 1845. Up to 389 conditions per place. [2023-08-27 15:04:47,641 INFO L140 encePairwiseOnDemand]: 272/281 looper letters, 72 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2023-08-27 15:04:47,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 96 transitions, 463 flow [2023-08-27 15:04:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 15:04:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 15:04:47,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1282 transitions. [2023-08-27 15:04:47,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32587697000508387 [2023-08-27 15:04:47,644 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1282 transitions. [2023-08-27 15:04:47,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1282 transitions. [2023-08-27 15:04:47,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:47,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1282 transitions. [2023-08-27 15:04:47,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 91.57142857142857) internal successors, (1282), 14 states have internal predecessors, (1282), 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 15:04:47,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 281.0) internal successors, (4215), 15 states have internal predecessors, (4215), 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 15:04:47,651 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 281.0) internal successors, (4215), 15 states have internal predecessors, (4215), 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 15:04:47,652 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 113 flow. Second operand 14 states and 1282 transitions. [2023-08-27 15:04:47,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 96 transitions, 463 flow [2023-08-27 15:04:47,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 96 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:04:47,654 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 242 flow [2023-08-27 15:04:47,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=242, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-27 15:04:47,656 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-08-27 15:04:47,656 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 242 flow [2023-08-27 15:04:47,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 86.58823529411765) internal successors, (1472), 17 states have internal predecessors, (1472), 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 15:04:47,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:47,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:04:47,675 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 15:04:47,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:47,865 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:47,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1468471509, now seen corresponding path program 1 times [2023-08-27 15:04:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:47,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771543725] [2023-08-27 15:04:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:47,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771543725] [2023-08-27 15:04:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771543725] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:04:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025286549] [2023-08-27 15:04:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:48,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:48,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:04:48,209 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 15:04:48,211 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 15:04:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:48,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 15:04:48,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:04:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:48,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:04:48,476 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:04:48,477 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 44 [2023-08-27 15:04:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:04:48,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025286549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:04:48,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:04:48,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 15:04:48,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848540787] [2023-08-27 15:04:48,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:04:48,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 15:04:48,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:48,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 15:04:48,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-08-27 15:04:48,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 281 [2023-08-27 15:04:48,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 242 flow. Second operand has 17 states, 17 states have (on average 81.76470588235294) internal successors, (1390), 17 states have internal predecessors, (1390), 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 15:04:48,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:48,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 281 [2023-08-27 15:04:48,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:04:49,603 INFO L124 PetriNetUnfolderBase]: 1836/2952 cut-off events. [2023-08-27 15:04:49,604 INFO L125 PetriNetUnfolderBase]: For 2288/2288 co-relation queries the response was YES. [2023-08-27 15:04:49,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7584 conditions, 2952 events. 1836/2952 cut-off events. For 2288/2288 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15488 event pairs, 196 based on Foata normal form. 146/3098 useless extension candidates. Maximal degree in co-relation 7565. Up to 657 conditions per place. [2023-08-27 15:04:49,617 INFO L140 encePairwiseOnDemand]: 268/281 looper letters, 209 selfloop transitions, 59 changer transitions 1/269 dead transitions. [2023-08-27 15:04:49,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 269 transitions, 1493 flow [2023-08-27 15:04:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 15:04:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 15:04:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1932 transitions. [2023-08-27 15:04:49,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3274021352313167 [2023-08-27 15:04:49,621 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1932 transitions. [2023-08-27 15:04:49,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1932 transitions. [2023-08-27 15:04:49,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:04:49,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1932 transitions. [2023-08-27 15:04:49,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 92.0) internal successors, (1932), 21 states have internal predecessors, (1932), 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 15:04:49,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 281.0) internal successors, (6182), 22 states have internal predecessors, (6182), 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 15:04:49,630 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 281.0) internal successors, (6182), 22 states have internal predecessors, (6182), 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 15:04:49,630 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 242 flow. Second operand 21 states and 1932 transitions. [2023-08-27 15:04:49,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 269 transitions, 1493 flow [2023-08-27 15:04:49,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 269 transitions, 1430 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 15:04:49,636 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 771 flow [2023-08-27 15:04:49,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=771, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2023-08-27 15:04:49,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2023-08-27 15:04:49,637 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 771 flow [2023-08-27 15:04:49,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 81.76470588235294) internal successors, (1390), 17 states have internal predecessors, (1390), 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 15:04:49,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:04:49,638 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:04:49,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 15:04:49,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:49,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:04:49,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:04:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash 712681575, now seen corresponding path program 1 times [2023-08-27 15:04:49,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:04:49,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436000716] [2023-08-27 15:04:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:04:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:50,456 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 15:04:50,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:04:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436000716] [2023-08-27 15:04:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436000716] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:04:50,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953726460] [2023-08-27 15:04:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:04:50,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:04:50,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:04:50,458 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 15:04:50,460 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 15:04:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:04:50,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 15:04:50,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:04:50,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:04:50,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 15:04:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:04:50,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:04:50,801 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:04:50,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 66 [2023-08-27 15:04:50,804 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2023-08-27 15:04:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 15:04:51,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953726460] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 15:04:51,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:04:51,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 21 [2023-08-27 15:04:51,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929778171] [2023-08-27 15:04:51,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:04:51,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 15:04:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:04:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 15:04:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=426, Unknown=2, NotChecked=0, Total=506 [2023-08-27 15:04:51,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 281 [2023-08-27 15:04:51,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 771 flow. Second operand has 8 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 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 15:04:51,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:04:51,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 281 [2023-08-27 15:04:51,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:00,289 INFO L124 PetriNetUnfolderBase]: 2832/4614 cut-off events. [2023-08-27 15:05:00,289 INFO L125 PetriNetUnfolderBase]: For 22942/22942 co-relation queries the response was YES. [2023-08-27 15:05:00,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19234 conditions, 4614 events. 2832/4614 cut-off events. For 22942/22942 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 26894 event pairs, 473 based on Foata normal form. 84/4698 useless extension candidates. Maximal degree in co-relation 19201. Up to 1633 conditions per place. [2023-08-27 15:05:00,316 INFO L140 encePairwiseOnDemand]: 268/281 looper letters, 217 selfloop transitions, 111 changer transitions 1/329 dead transitions. [2023-08-27 15:05:00,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 329 transitions, 2894 flow [2023-08-27 15:05:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 15:05:00,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 15:05:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1298 transitions. [2023-08-27 15:05:00,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3553243909115795 [2023-08-27 15:05:00,319 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1298 transitions. [2023-08-27 15:05:00,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1298 transitions. [2023-08-27 15:05:00,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:00,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1298 transitions. [2023-08-27 15:05:00,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 99.84615384615384) internal successors, (1298), 13 states have internal predecessors, (1298), 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 15:05:00,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 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 15:05:00,325 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 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 15:05:00,325 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 771 flow. Second operand 13 states and 1298 transitions. [2023-08-27 15:05:00,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 329 transitions, 2894 flow [2023-08-27 15:05:00,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 329 transitions, 2836 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-27 15:05:00,365 INFO L231 Difference]: Finished difference. Result has 109 places, 201 transitions, 2047 flow [2023-08-27 15:05:00,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2047, PETRI_PLACES=109, PETRI_TRANSITIONS=201} [2023-08-27 15:05:00,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2023-08-27 15:05:00,365 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 201 transitions, 2047 flow [2023-08-27 15:05:00,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 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 15:05:00,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:00,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:00,373 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 15:05:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:00,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:00,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:00,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1782332717, now seen corresponding path program 1 times [2023-08-27 15:05:00,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:00,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160238382] [2023-08-27 15:05:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:05:00,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160238382] [2023-08-27 15:05:00,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160238382] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842762312] [2023-08-27 15:05:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:00,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:00,883 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 15:05:00,885 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 15:05:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:00,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 15:05:00,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:00,999 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 15:05:01,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 15:05:01,109 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 15:05:01,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:05:01,244 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 15:05:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:05:01,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:05:01,299 WARN L839 $PredicateComparison]: unable to prove that (or (= (mod |c_thread1Thread1of1ForFork2_~cond~0#1| 256) 0) (forall ((v_ArrVal_396 (Array Int Int))) (< (+ c_~sum~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_396) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4)))) 2147483648))) is different from false [2023-08-27 15:05:01,641 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:01,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2023-08-27 15:05:01,652 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:01,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 484 treesize of output 460 [2023-08-27 15:05:01,671 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:01,672 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 134 [2023-08-27 15:05:01,699 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2023-08-27 15:05:01,713 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:01,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 109 [2023-08-27 15:05:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:05:02,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842762312] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:05:02,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:05:02,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2023-08-27 15:05:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205559426] [2023-08-27 15:05:02,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:05:02,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 15:05:02,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:05:02,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 15:05:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=412, Unknown=3, NotChecked=42, Total=552 [2023-08-27 15:05:02,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 281 [2023-08-27 15:05:02,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 201 transitions, 2047 flow. Second operand has 24 states, 24 states have (on average 71.375) internal successors, (1713), 24 states have internal predecessors, (1713), 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 15:05:02,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:05:02,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 281 [2023-08-27 15:05:02,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:05,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:05:08,691 INFO L124 PetriNetUnfolderBase]: 3344/5549 cut-off events. [2023-08-27 15:05:08,691 INFO L125 PetriNetUnfolderBase]: For 39599/39599 co-relation queries the response was YES. [2023-08-27 15:05:08,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26364 conditions, 5549 events. 3344/5549 cut-off events. For 39599/39599 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 34019 event pairs, 525 based on Foata normal form. 440/5989 useless extension candidates. Maximal degree in co-relation 26319. Up to 1858 conditions per place. [2023-08-27 15:05:08,728 INFO L140 encePairwiseOnDemand]: 262/281 looper letters, 310 selfloop transitions, 239 changer transitions 5/554 dead transitions. [2023-08-27 15:05:08,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 554 transitions, 5865 flow [2023-08-27 15:05:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-27 15:05:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-27 15:05:08,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3488 transitions. [2023-08-27 15:05:08,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27584025306445237 [2023-08-27 15:05:08,735 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3488 transitions. [2023-08-27 15:05:08,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3488 transitions. [2023-08-27 15:05:08,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:08,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3488 transitions. [2023-08-27 15:05:08,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 77.5111111111111) internal successors, (3488), 45 states have internal predecessors, (3488), 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 15:05:08,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 281.0) internal successors, (12926), 46 states have internal predecessors, (12926), 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 15:05:08,752 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 281.0) internal successors, (12926), 46 states have internal predecessors, (12926), 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 15:05:08,752 INFO L175 Difference]: Start difference. First operand has 109 places, 201 transitions, 2047 flow. Second operand 45 states and 3488 transitions. [2023-08-27 15:05:08,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 554 transitions, 5865 flow [2023-08-27 15:05:08,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 554 transitions, 5826 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-27 15:05:08,840 INFO L231 Difference]: Finished difference. Result has 165 places, 354 transitions, 4362 flow [2023-08-27 15:05:08,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4362, PETRI_PLACES=165, PETRI_TRANSITIONS=354} [2023-08-27 15:05:08,841 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2023-08-27 15:05:08,842 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 354 transitions, 4362 flow [2023-08-27 15:05:08,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 71.375) internal successors, (1713), 24 states have internal predecessors, (1713), 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 15:05:08,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:08,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:08,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 15:05:09,047 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,SelfDestructingSolverStorable10 [2023-08-27 15:05:09,047 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:09,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1578803402, now seen corresponding path program 2 times [2023-08-27 15:05:09,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:09,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276356389] [2023-08-27 15:05:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:09,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:09,528 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 15:05:09,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:09,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276356389] [2023-08-27 15:05:09,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276356389] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:09,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963781614] [2023-08-27 15:05:09,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:05:09,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:09,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:09,530 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 15:05:09,532 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 15:05:09,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 15:05:09,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:05:09,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 15:05:09,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:09,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:05:09,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 15:05:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 15:05:09,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:05:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963781614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:05:09,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:05:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-27 15:05:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061621932] [2023-08-27 15:05:09,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:05:09,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:05:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:05:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:05:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-08-27 15:05:09,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 281 [2023-08-27 15:05:09,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 354 transitions, 4362 flow. Second operand has 7 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 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 15:05:09,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:05:09,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 281 [2023-08-27 15:05:09,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:10,724 INFO L124 PetriNetUnfolderBase]: 3808/6445 cut-off events. [2023-08-27 15:05:10,724 INFO L125 PetriNetUnfolderBase]: For 78732/78732 co-relation queries the response was YES. [2023-08-27 15:05:10,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38761 conditions, 6445 events. 3808/6445 cut-off events. For 78732/78732 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 41154 event pairs, 1358 based on Foata normal form. 125/6570 useless extension candidates. Maximal degree in co-relation 38700. Up to 3061 conditions per place. [2023-08-27 15:05:10,769 INFO L140 encePairwiseOnDemand]: 274/281 looper letters, 309 selfloop transitions, 134 changer transitions 1/444 dead transitions. [2023-08-27 15:05:10,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 444 transitions, 6086 flow [2023-08-27 15:05:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:05:10,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:05:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2023-08-27 15:05:10,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3582443653618031 [2023-08-27 15:05:10,770 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 604 transitions. [2023-08-27 15:05:10,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 604 transitions. [2023-08-27 15:05:10,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:10,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 604 transitions. [2023-08-27 15:05:10,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 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 15:05:10,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 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 15:05:10,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 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 15:05:10,773 INFO L175 Difference]: Start difference. First operand has 165 places, 354 transitions, 4362 flow. Second operand 6 states and 604 transitions. [2023-08-27 15:05:10,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 444 transitions, 6086 flow [2023-08-27 15:05:10,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 444 transitions, 5698 flow, removed 158 selfloop flow, removed 9 redundant places. [2023-08-27 15:05:11,005 INFO L231 Difference]: Finished difference. Result has 164 places, 359 transitions, 4552 flow [2023-08-27 15:05:11,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=3995, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4552, PETRI_PLACES=164, PETRI_TRANSITIONS=359} [2023-08-27 15:05:11,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2023-08-27 15:05:11,006 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 359 transitions, 4552 flow [2023-08-27 15:05:11,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 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 15:05:11,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:11,006 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:11,019 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 15:05:11,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:11,211 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:11,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1573902303, now seen corresponding path program 2 times [2023-08-27 15:05:11,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:11,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927902717] [2023-08-27 15:05:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:11,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:11,859 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 15:05:11,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927902717] [2023-08-27 15:05:11,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927902717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913967980] [2023-08-27 15:05:11,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:05:11,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:11,860 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:05:11,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 15:05:11,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 15:05:11,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:05:11,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 15:05:11,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:05:12,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-27 15:05:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 15:05:12,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:05:12,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913967980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:05:12,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:05:12,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-27 15:05:12,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920198681] [2023-08-27 15:05:12,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:05:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:05:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:05:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:05:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-08-27 15:05:12,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 281 [2023-08-27 15:05:12,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 359 transitions, 4552 flow. Second operand has 7 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 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 15:05:12,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:05:12,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 281 [2023-08-27 15:05:12,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:12,969 INFO L124 PetriNetUnfolderBase]: 3742/6346 cut-off events. [2023-08-27 15:05:12,969 INFO L125 PetriNetUnfolderBase]: For 70519/70519 co-relation queries the response was YES. [2023-08-27 15:05:12,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37723 conditions, 6346 events. 3742/6346 cut-off events. For 70519/70519 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 40389 event pairs, 1277 based on Foata normal form. 33/6379 useless extension candidates. Maximal degree in co-relation 37661. Up to 2962 conditions per place. [2023-08-27 15:05:13,014 INFO L140 encePairwiseOnDemand]: 275/281 looper letters, 303 selfloop transitions, 134 changer transitions 1/438 dead transitions. [2023-08-27 15:05:13,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 438 transitions, 6071 flow [2023-08-27 15:05:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:05:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:05:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 601 transitions. [2023-08-27 15:05:13,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3564650059311981 [2023-08-27 15:05:13,016 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 601 transitions. [2023-08-27 15:05:13,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 601 transitions. [2023-08-27 15:05:13,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:13,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 601 transitions. [2023-08-27 15:05:13,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 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 15:05:13,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 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 15:05:13,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 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 15:05:13,018 INFO L175 Difference]: Start difference. First operand has 164 places, 359 transitions, 4552 flow. Second operand 6 states and 601 transitions. [2023-08-27 15:05:13,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 438 transitions, 6071 flow [2023-08-27 15:05:13,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 438 transitions, 5961 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 15:05:13,214 INFO L231 Difference]: Finished difference. Result has 167 places, 359 transitions, 4817 flow [2023-08-27 15:05:13,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4444, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4817, PETRI_PLACES=167, PETRI_TRANSITIONS=359} [2023-08-27 15:05:13,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2023-08-27 15:05:13,215 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 359 transitions, 4817 flow [2023-08-27 15:05:13,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 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 15:05:13,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:13,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:13,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 15:05:13,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 15:05:13,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:13,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:13,425 INFO L85 PathProgramCache]: Analyzing trace with hash 321520720, now seen corresponding path program 1 times [2023-08-27 15:05:13,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:13,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436934654] [2023-08-27 15:05:13,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:13,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:05:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436934654] [2023-08-27 15:05:13,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436934654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:13,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896393024] [2023-08-27 15:05:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:13,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:13,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:13,594 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:05:13,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 15:05:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:13,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 15:05:13,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:13,739 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 98 [2023-08-27 15:05:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:05:13,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:05:13,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896393024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:05:13,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:05:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2023-08-27 15:05:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462799291] [2023-08-27 15:05:13,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:05:13,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:05:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:05:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:05:13,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-27 15:05:13,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 281 [2023-08-27 15:05:13,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 359 transitions, 4817 flow. Second operand has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 15:05:13,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:05:13,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 281 [2023-08-27 15:05:13,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:14,823 INFO L124 PetriNetUnfolderBase]: 4461/7744 cut-off events. [2023-08-27 15:05:14,823 INFO L125 PetriNetUnfolderBase]: For 102213/102384 co-relation queries the response was YES. [2023-08-27 15:05:14,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46195 conditions, 7744 events. 4461/7744 cut-off events. For 102213/102384 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 54473 event pairs, 1118 based on Foata normal form. 156/7749 useless extension candidates. Maximal degree in co-relation 46143. Up to 3700 conditions per place. [2023-08-27 15:05:14,880 INFO L140 encePairwiseOnDemand]: 276/281 looper letters, 318 selfloop transitions, 125 changer transitions 0/456 dead transitions. [2023-08-27 15:05:14,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 456 transitions, 6941 flow [2023-08-27 15:05:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 15:05:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 15:05:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 539 transitions. [2023-08-27 15:05:14,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4795373665480427 [2023-08-27 15:05:14,881 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 539 transitions. [2023-08-27 15:05:14,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 539 transitions. [2023-08-27 15:05:14,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:14,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 539 transitions. [2023-08-27 15:05:14,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 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 15:05:14,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 15:05:14,884 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 15:05:14,884 INFO L175 Difference]: Start difference. First operand has 167 places, 359 transitions, 4817 flow. Second operand 4 states and 539 transitions. [2023-08-27 15:05:14,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 456 transitions, 6941 flow [2023-08-27 15:05:15,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 456 transitions, 6597 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-27 15:05:15,091 INFO L231 Difference]: Finished difference. Result has 164 places, 388 transitions, 5549 flow [2023-08-27 15:05:15,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4369, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5549, PETRI_PLACES=164, PETRI_TRANSITIONS=388} [2023-08-27 15:05:15,092 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2023-08-27 15:05:15,092 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 388 transitions, 5549 flow [2023-08-27 15:05:15,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 15:05:15,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:15,093 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:15,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 15:05:15,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 15:05:15,301 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:15,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash -21462861, now seen corresponding path program 1 times [2023-08-27 15:05:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950331961] [2023-08-27 15:05:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:15,937 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 15:05:15,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950331961] [2023-08-27 15:05:15,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950331961] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97037984] [2023-08-27 15:05:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:15,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:15,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:15,939 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:05:15,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 15:05:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:16,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-27 15:05:16,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:16,107 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 15:05:16,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:05:16,167 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:05:16,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:05:16,218 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:05:16,489 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 15:05:16,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:05:16,995 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:16,996 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 67 [2023-08-27 15:05:17,020 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:17,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 199 treesize of output 210 [2023-08-27 15:05:17,035 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:17,036 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 141 [2023-08-27 15:05:17,052 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:17,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 93 [2023-08-27 15:05:18,443 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 15:05:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97037984] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:05:18,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:05:18,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-08-27 15:05:18,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428522579] [2023-08-27 15:05:18,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:05:18,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 15:05:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:05:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 15:05:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=651, Unknown=1, NotChecked=0, Total=756 [2023-08-27 15:05:18,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 281 [2023-08-27 15:05:18,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 388 transitions, 5549 flow. Second operand has 28 states, 28 states have (on average 74.60714285714286) internal successors, (2089), 28 states have internal predecessors, (2089), 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 15:05:18,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:05:18,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 281 [2023-08-27 15:05:18,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:24,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:05:28,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:05:30,964 INFO L124 PetriNetUnfolderBase]: 11906/20579 cut-off events. [2023-08-27 15:05:30,964 INFO L125 PetriNetUnfolderBase]: For 250877/250877 co-relation queries the response was YES. [2023-08-27 15:05:31,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121820 conditions, 20579 events. 11906/20579 cut-off events. For 250877/250877 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 164238 event pairs, 1835 based on Foata normal form. 592/21171 useless extension candidates. Maximal degree in co-relation 121767. Up to 10288 conditions per place. [2023-08-27 15:05:31,197 INFO L140 encePairwiseOnDemand]: 267/281 looper letters, 752 selfloop transitions, 580 changer transitions 6/1338 dead transitions. [2023-08-27 15:05:31,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 1338 transitions, 18255 flow [2023-08-27 15:05:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-08-27 15:05:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-08-27 15:05:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 5083 transitions. [2023-08-27 15:05:31,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29175754792790726 [2023-08-27 15:05:31,217 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 5083 transitions. [2023-08-27 15:05:31,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 5083 transitions. [2023-08-27 15:05:31,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:31,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 5083 transitions. [2023-08-27 15:05:31,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 81.98387096774194) internal successors, (5083), 62 states have internal predecessors, (5083), 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 15:05:31,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 281.0) internal successors, (17703), 63 states have internal predecessors, (17703), 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 15:05:31,237 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 281.0) internal successors, (17703), 63 states have internal predecessors, (17703), 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 15:05:31,237 INFO L175 Difference]: Start difference. First operand has 164 places, 388 transitions, 5549 flow. Second operand 62 states and 5083 transitions. [2023-08-27 15:05:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 1338 transitions, 18255 flow [2023-08-27 15:05:31,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 1338 transitions, 18245 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-27 15:05:31,765 INFO L231 Difference]: Finished difference. Result has 259 places, 828 transitions, 14772 flow [2023-08-27 15:05:31,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=14772, PETRI_PLACES=259, PETRI_TRANSITIONS=828} [2023-08-27 15:05:31,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2023-08-27 15:05:31,766 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 828 transitions, 14772 flow [2023-08-27 15:05:31,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 74.60714285714286) internal successors, (2089), 28 states have internal predecessors, (2089), 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 15:05:31,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:31,767 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:31,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 15:05:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 15:05:31,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:31,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:31,967 INFO L85 PathProgramCache]: Analyzing trace with hash -97619845, now seen corresponding path program 1 times [2023-08-27 15:05:31,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:31,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258914452] [2023-08-27 15:05:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:31,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:32,389 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 15:05:32,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:32,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258914452] [2023-08-27 15:05:32,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258914452] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:32,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676153708] [2023-08-27 15:05:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:32,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:32,391 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:05:32,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 15:05:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:32,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 15:05:32,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:05:32,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:05:32,628 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:05:32,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 44 [2023-08-27 15:05:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 15:05:32,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676153708] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:32,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 15:05:32,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 15 [2023-08-27 15:05:32,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619280228] [2023-08-27 15:05:32,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:05:32,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:05:32,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:05:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:05:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-08-27 15:05:32,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 281 [2023-08-27 15:05:32,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 828 transitions, 14772 flow. Second operand has 6 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:05:32,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:05:32,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 281 [2023-08-27 15:05:32,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:37,804 INFO L124 PetriNetUnfolderBase]: 12178/20977 cut-off events. [2023-08-27 15:05:37,804 INFO L125 PetriNetUnfolderBase]: For 502351/502351 co-relation queries the response was YES. [2023-08-27 15:05:37,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164187 conditions, 20977 events. 12178/20977 cut-off events. For 502351/502351 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 167822 event pairs, 2427 based on Foata normal form. 24/21001 useless extension candidates. Maximal degree in co-relation 164100. Up to 10411 conditions per place. [2023-08-27 15:05:37,995 INFO L140 encePairwiseOnDemand]: 270/281 looper letters, 728 selfloop transitions, 354 changer transitions 4/1086 dead transitions. [2023-08-27 15:05:37,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 1086 transitions, 20606 flow [2023-08-27 15:05:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:05:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:05:37,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 866 transitions. [2023-08-27 15:05:37,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38523131672597866 [2023-08-27 15:05:37,997 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 866 transitions. [2023-08-27 15:05:37,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 866 transitions. [2023-08-27 15:05:37,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:37,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 866 transitions. [2023-08-27 15:05:37,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.25) internal successors, (866), 8 states have internal predecessors, (866), 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 15:05:38,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 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 15:05:38,000 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 281.0) internal successors, (2529), 9 states have internal predecessors, (2529), 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 15:05:38,000 INFO L175 Difference]: Start difference. First operand has 259 places, 828 transitions, 14772 flow. Second operand 8 states and 866 transitions. [2023-08-27 15:05:38,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 1086 transitions, 20606 flow [2023-08-27 15:05:43,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 1086 transitions, 18510 flow, removed 939 selfloop flow, removed 12 redundant places. [2023-08-27 15:05:43,491 INFO L231 Difference]: Finished difference. Result has 255 places, 861 transitions, 15174 flow [2023-08-27 15:05:43,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=13395, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15174, PETRI_PLACES=255, PETRI_TRANSITIONS=861} [2023-08-27 15:05:43,492 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2023-08-27 15:05:43,492 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 861 transitions, 15174 flow [2023-08-27 15:05:43,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:05:43,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:43,493 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:43,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 15:05:43,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 15:05:43,701 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:43,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1262113587, now seen corresponding path program 1 times [2023-08-27 15:05:43,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:43,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204055873] [2023-08-27 15:05:43,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:43,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:05:43,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204055873] [2023-08-27 15:05:43,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204055873] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:43,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849362522] [2023-08-27 15:05:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:43,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:43,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:43,780 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:05:43,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 15:05:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:43,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 15:05:43,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:43,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 98 [2023-08-27 15:05:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:05:43,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:05:44,009 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 110 [2023-08-27 15:05:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:05:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849362522] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:05:44,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:05:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 15:05:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68644560] [2023-08-27 15:05:44,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:05:44,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 15:05:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:05:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 15:05:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-27 15:05:44,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 281 [2023-08-27 15:05:44,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 861 transitions, 15174 flow. Second operand has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 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 15:05:44,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:05:44,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 281 [2023-08-27 15:05:44,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:47,272 INFO L124 PetriNetUnfolderBase]: 8371/14927 cut-off events. [2023-08-27 15:05:47,273 INFO L125 PetriNetUnfolderBase]: For 326833/327322 co-relation queries the response was YES. [2023-08-27 15:05:47,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104713 conditions, 14927 events. 8371/14927 cut-off events. For 326833/327322 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 121598 event pairs, 3623 based on Foata normal form. 331/14994 useless extension candidates. Maximal degree in co-relation 104625. Up to 12060 conditions per place. [2023-08-27 15:05:47,424 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 687 selfloop transitions, 18 changer transitions 7/735 dead transitions. [2023-08-27 15:05:47,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 735 transitions, 13662 flow [2023-08-27 15:05:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:05:47,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:05:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 830 transitions. [2023-08-27 15:05:47,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42196237925775293 [2023-08-27 15:05:47,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 830 transitions. [2023-08-27 15:05:47,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 830 transitions. [2023-08-27 15:05:47,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:47,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 830 transitions. [2023-08-27 15:05:47,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 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 15:05:47,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 15:05:47,429 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 15:05:47,429 INFO L175 Difference]: Start difference. First operand has 255 places, 861 transitions, 15174 flow. Second operand 7 states and 830 transitions. [2023-08-27 15:05:47,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 735 transitions, 13662 flow [2023-08-27 15:05:49,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 735 transitions, 13252 flow, removed 180 selfloop flow, removed 3 redundant places. [2023-08-27 15:05:49,281 INFO L231 Difference]: Finished difference. Result has 257 places, 691 transitions, 11562 flow [2023-08-27 15:05:49,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=11495, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11562, PETRI_PLACES=257, PETRI_TRANSITIONS=691} [2023-08-27 15:05:49,281 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2023-08-27 15:05:49,281 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 691 transitions, 11562 flow [2023-08-27 15:05:49,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 110.0) internal successors, (1320), 12 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 15:05:49,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:49,282 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:49,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 15:05:49,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:49,486 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:49,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1876221641, now seen corresponding path program 2 times [2023-08-27 15:05:49,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:49,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536988255] [2023-08-27 15:05:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:49,994 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 15:05:49,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:49,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536988255] [2023-08-27 15:05:49,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536988255] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:49,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115708451] [2023-08-27 15:05:49,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:05:49,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:49,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:49,995 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:05:49,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 15:05:50,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 15:05:50,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:05:50,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-27 15:05:50,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 15:05:50,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 15:05:50,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115708451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:05:50,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 15:05:50,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-27 15:05:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412446750] [2023-08-27 15:05:50,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:05:50,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:05:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:05:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:05:50,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-27 15:05:50,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 281 [2023-08-27 15:05:50,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 691 transitions, 11562 flow. Second operand has 7 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 states have internal predecessors, (685), 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 15:05:50,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:05:50,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 281 [2023-08-27 15:05:50,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:05:53,814 INFO L124 PetriNetUnfolderBase]: 9470/16661 cut-off events. [2023-08-27 15:05:53,815 INFO L125 PetriNetUnfolderBase]: For 318090/318090 co-relation queries the response was YES. [2023-08-27 15:05:53,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113964 conditions, 16661 events. 9470/16661 cut-off events. For 318090/318090 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 131249 event pairs, 3025 based on Foata normal form. 210/16871 useless extension candidates. Maximal degree in co-relation 113876. Up to 12883 conditions per place. [2023-08-27 15:05:53,953 INFO L140 encePairwiseOnDemand]: 272/281 looper letters, 556 selfloop transitions, 245 changer transitions 0/801 dead transitions. [2023-08-27 15:05:53,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 801 transitions, 14584 flow [2023-08-27 15:05:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:05:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:05:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 653 transitions. [2023-08-27 15:05:53,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38730723606168443 [2023-08-27 15:05:53,956 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 653 transitions. [2023-08-27 15:05:53,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 653 transitions. [2023-08-27 15:05:53,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:05:53,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 653 transitions. [2023-08-27 15:05:53,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 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 15:05:53,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 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 15:05:53,969 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 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 15:05:53,969 INFO L175 Difference]: Start difference. First operand has 257 places, 691 transitions, 11562 flow. Second operand 6 states and 653 transitions. [2023-08-27 15:05:53,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 801 transitions, 14584 flow [2023-08-27 15:05:55,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 801 transitions, 14545 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-27 15:05:55,690 INFO L231 Difference]: Finished difference. Result has 259 places, 718 transitions, 12769 flow [2023-08-27 15:05:55,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=11440, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12769, PETRI_PLACES=259, PETRI_TRANSITIONS=718} [2023-08-27 15:05:55,691 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 218 predicate places. [2023-08-27 15:05:55,691 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 718 transitions, 12769 flow [2023-08-27 15:05:55,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 states have internal predecessors, (685), 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 15:05:55,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:05:55,691 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:05:55,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 15:05:55,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-27 15:05:55,894 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:05:55,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:05:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash -611795050, now seen corresponding path program 2 times [2023-08-27 15:05:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:05:55,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480419980] [2023-08-27 15:05:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:05:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:05:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:05:56,553 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 15:05:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:05:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480419980] [2023-08-27 15:05:56,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480419980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:05:56,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350690604] [2023-08-27 15:05:56,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:05:56,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:05:56,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:05:56,555 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:05:56,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 15:05:56,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:05:56,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:05:56,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 15:05:56,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:05:56,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:05:56,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-27 15:05:57,096 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 15:05:57,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:05:57,752 INFO L322 Elim1Store]: treesize reduction 16, result has 80.2 percent of original size [2023-08-27 15:05:57,752 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 355 treesize of output 339 [2023-08-27 15:05:57,789 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-27 15:05:57,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 163 [2023-08-27 15:05:57,823 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-27 15:05:57,824 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 146 treesize of output 145 [2023-08-27 15:06:04,210 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 15:06:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350690604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:06:04,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:06:04,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 28 [2023-08-27 15:06:04,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522266693] [2023-08-27 15:06:04,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:06:04,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 15:06:04,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:06:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 15:06:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=676, Unknown=2, NotChecked=0, Total=870 [2023-08-27 15:06:04,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 281 [2023-08-27 15:06:04,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 718 transitions, 12769 flow. Second operand has 30 states, 30 states have (on average 77.6) internal successors, (2328), 30 states have internal predecessors, (2328), 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 15:06:04,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:06:04,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 281 [2023-08-27 15:06:04,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:06:39,048 WARN L234 SmtUtils]: Spent 24.52s on a formula simplification. DAG size of input: 107 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:06:49,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:06:54,209 INFO L124 PetriNetUnfolderBase]: 12510/22076 cut-off events. [2023-08-27 15:06:54,209 INFO L125 PetriNetUnfolderBase]: For 494522/494522 co-relation queries the response was YES. [2023-08-27 15:06:54,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155146 conditions, 22076 events. 12510/22076 cut-off events. For 494522/494522 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 182307 event pairs, 1609 based on Foata normal form. 647/22723 useless extension candidates. Maximal degree in co-relation 155057. Up to 10834 conditions per place. [2023-08-27 15:06:54,420 INFO L140 encePairwiseOnDemand]: 269/281 looper letters, 853 selfloop transitions, 816 changer transitions 6/1675 dead transitions. [2023-08-27 15:06:54,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 1675 transitions, 29413 flow [2023-08-27 15:06:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-27 15:06:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-27 15:06:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4498 transitions. [2023-08-27 15:06:54,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30782918149466193 [2023-08-27 15:06:54,425 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4498 transitions. [2023-08-27 15:06:54,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4498 transitions. [2023-08-27 15:06:54,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:06:54,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4498 transitions. [2023-08-27 15:06:54,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 86.5) internal successors, (4498), 52 states have internal predecessors, (4498), 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 15:06:54,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 281.0) internal successors, (14893), 53 states have internal predecessors, (14893), 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 15:06:54,437 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 281.0) internal successors, (14893), 53 states have internal predecessors, (14893), 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 15:06:54,437 INFO L175 Difference]: Start difference. First operand has 259 places, 718 transitions, 12769 flow. Second operand 52 states and 4498 transitions. [2023-08-27 15:06:54,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 1675 transitions, 29413 flow [2023-08-27 15:06:57,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1675 transitions, 28831 flow, removed 142 selfloop flow, removed 3 redundant places. [2023-08-27 15:06:57,038 INFO L231 Difference]: Finished difference. Result has 331 places, 1202 transitions, 24950 flow [2023-08-27 15:06:57,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=11782, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=404, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=24950, PETRI_PLACES=331, PETRI_TRANSITIONS=1202} [2023-08-27 15:06:57,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2023-08-27 15:06:57,039 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 1202 transitions, 24950 flow [2023-08-27 15:06:57,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 77.6) internal successors, (2328), 30 states have internal predecessors, (2328), 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 15:06:57,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:06:57,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:06:57,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-27 15:06:57,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:06:57,240 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:06:57,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:06:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1269225154, now seen corresponding path program 1 times [2023-08-27 15:06:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:06:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159251290] [2023-08-27 15:06:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:06:57,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:06:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:06:57,786 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 15:06:57,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:06:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159251290] [2023-08-27 15:06:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159251290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:06:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226021352] [2023-08-27 15:06:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:06:57,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:06:57,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:06:57,788 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:06:57,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 15:06:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:06:57,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 15:06:57,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:06:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 15:06:58,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:06:58,288 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-27 15:06:58,288 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 212 treesize of output 183 [2023-08-27 15:06:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 15:06:58,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226021352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:06:58,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:06:58,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 20 [2023-08-27 15:06:58,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504090691] [2023-08-27 15:06:58,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:06:58,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 15:06:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:06:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 15:06:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2023-08-27 15:06:58,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 281 [2023-08-27 15:06:58,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1202 transitions, 24950 flow. Second operand has 22 states, 22 states have (on average 82.0) internal successors, (1804), 22 states have internal predecessors, (1804), 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 15:06:58,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:06:58,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 281 [2023-08-27 15:06:58,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:07:11,334 INFO L124 PetriNetUnfolderBase]: 16487/28613 cut-off events. [2023-08-27 15:07:11,334 INFO L125 PetriNetUnfolderBase]: For 817413/817413 co-relation queries the response was YES. [2023-08-27 15:07:11,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223775 conditions, 28613 events. 16487/28613 cut-off events. For 817413/817413 co-relation queries the response was YES. Maximal size of possible extension queue 1412. Compared 240866 event pairs, 2334 based on Foata normal form. 685/29298 useless extension candidates. Maximal degree in co-relation 223662. Up to 13481 conditions per place. [2023-08-27 15:07:11,695 INFO L140 encePairwiseOnDemand]: 268/281 looper letters, 1620 selfloop transitions, 903 changer transitions 7/2530 dead transitions. [2023-08-27 15:07:11,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 2530 transitions, 50854 flow [2023-08-27 15:07:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-08-27 15:07:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-08-27 15:07:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 5814 transitions. [2023-08-27 15:07:11,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31831371475499587 [2023-08-27 15:07:11,700 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 5814 transitions. [2023-08-27 15:07:11,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 5814 transitions. [2023-08-27 15:07:11,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:07:11,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 5814 transitions. [2023-08-27 15:07:11,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 89.44615384615385) internal successors, (5814), 65 states have internal predecessors, (5814), 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 15:07:11,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 281.0) internal successors, (18546), 66 states have internal predecessors, (18546), 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 15:07:11,716 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 281.0) internal successors, (18546), 66 states have internal predecessors, (18546), 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 15:07:11,716 INFO L175 Difference]: Start difference. First operand has 331 places, 1202 transitions, 24950 flow. Second operand 65 states and 5814 transitions. [2023-08-27 15:07:11,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 2530 transitions, 50854 flow [2023-08-27 15:07:26,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 2530 transitions, 43740 flow, removed 3461 selfloop flow, removed 15 redundant places. [2023-08-27 15:07:26,042 INFO L231 Difference]: Finished difference. Result has 388 places, 1508 transitions, 31009 flow [2023-08-27 15:07:26,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=20685, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=534, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=31009, PETRI_PLACES=388, PETRI_TRANSITIONS=1508} [2023-08-27 15:07:26,043 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2023-08-27 15:07:26,043 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 1508 transitions, 31009 flow [2023-08-27 15:07:26,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 82.0) internal successors, (1804), 22 states have internal predecessors, (1804), 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 15:07:26,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:07:26,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:07:26,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 15:07:26,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:07:26,245 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:07:26,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:07:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1047809525, now seen corresponding path program 2 times [2023-08-27 15:07:26,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:07:26,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730031975] [2023-08-27 15:07:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:07:26,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:07:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:07:26,786 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 15:07:26,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:07:26,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730031975] [2023-08-27 15:07:26,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730031975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:07:26,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291070277] [2023-08-27 15:07:26,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:07:26,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:07:26,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:07:26,787 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:07:26,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 15:07:26,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:07:26,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:07:26,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-27 15:07:26,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:07:26,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 15:07:27,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:07:27,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:07:27,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:07:27,045 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:07:27,379 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 15:07:27,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:07:28,322 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:07:28,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 87 [2023-08-27 15:07:28,379 INFO L322 Elim1Store]: treesize reduction 18, result has 77.2 percent of original size [2023-08-27 15:07:28,379 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 279 treesize of output 298 [2023-08-27 15:07:28,413 INFO L322 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-08-27 15:07:28,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 233 treesize of output 209 [2023-08-27 15:07:28,449 INFO L322 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-08-27 15:07:28,449 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 155 [2023-08-27 15:07:31,304 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 15:07:31,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291070277] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:07:31,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:07:31,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 30 [2023-08-27 15:07:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102725639] [2023-08-27 15:07:31,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:07:31,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 15:07:31,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:07:31,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 15:07:31,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=748, Unknown=1, NotChecked=0, Total=992 [2023-08-27 15:07:31,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 281 [2023-08-27 15:07:31,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1508 transitions, 31009 flow. Second operand has 32 states, 32 states have (on average 74.40625) internal successors, (2381), 32 states have internal predecessors, (2381), 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 15:07:31,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:07:31,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 281 [2023-08-27 15:07:31,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:07:52,013 INFO L124 PetriNetUnfolderBase]: 20808/36113 cut-off events. [2023-08-27 15:07:52,013 INFO L125 PetriNetUnfolderBase]: For 765504/765504 co-relation queries the response was YES. [2023-08-27 15:07:52,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272296 conditions, 36113 events. 20808/36113 cut-off events. For 765504/765504 co-relation queries the response was YES. Maximal size of possible extension queue 1747. Compared 313777 event pairs, 3086 based on Foata normal form. 169/36282 useless extension candidates. Maximal degree in co-relation 272171. Up to 16853 conditions per place. [2023-08-27 15:07:52,630 INFO L140 encePairwiseOnDemand]: 268/281 looper letters, 1250 selfloop transitions, 1275 changer transitions 1/2526 dead transitions. [2023-08-27 15:07:52,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 2526 transitions, 52851 flow [2023-08-27 15:07:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 15:07:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 15:07:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3939 transitions. [2023-08-27 15:07:52,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2920373665480427 [2023-08-27 15:07:52,634 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3939 transitions. [2023-08-27 15:07:52,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3939 transitions. [2023-08-27 15:07:52,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:07:52,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3939 transitions. [2023-08-27 15:07:52,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 82.0625) internal successors, (3939), 48 states have internal predecessors, (3939), 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 15:07:52,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 281.0) internal successors, (13769), 49 states have internal predecessors, (13769), 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 15:07:52,649 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 281.0) internal successors, (13769), 49 states have internal predecessors, (13769), 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 15:07:52,649 INFO L175 Difference]: Start difference. First operand has 388 places, 1508 transitions, 31009 flow. Second operand 48 states and 3939 transitions. [2023-08-27 15:07:52,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 2526 transitions, 52851 flow [2023-08-27 15:08:04,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 2526 transitions, 51083 flow, removed 767 selfloop flow, removed 8 redundant places. [2023-08-27 15:08:05,013 INFO L231 Difference]: Finished difference. Result has 451 places, 2049 transitions, 46490 flow [2023-08-27 15:08:05,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=29770, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=777, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=46490, PETRI_PLACES=451, PETRI_TRANSITIONS=2049} [2023-08-27 15:08:05,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2023-08-27 15:08:05,015 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 2049 transitions, 46490 flow [2023-08-27 15:08:05,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 74.40625) internal successors, (2381), 32 states have internal predecessors, (2381), 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 15:08:05,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:08:05,015 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:08:05,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-27 15:08:05,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:08:05,220 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:08:05,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:08:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1022671138, now seen corresponding path program 2 times [2023-08-27 15:08:05,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:08:05,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136229687] [2023-08-27 15:08:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:08:05,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:08:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:08:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:08:05,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:08:05,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136229687] [2023-08-27 15:08:05,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136229687] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:08:05,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330116180] [2023-08-27 15:08:05,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:08:05,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:08:05,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:08:05,729 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:08:05,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 15:08:05,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:08:05,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:08:05,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-27 15:08:05,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:08:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-27 15:08:06,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:08:06,328 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-27 15:08:06,328 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 225 treesize of output 188 [2023-08-27 15:08:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 15:08:06,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330116180] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:08:06,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:08:06,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 24 [2023-08-27 15:08:06,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61692394] [2023-08-27 15:08:06,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:08:06,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 15:08:06,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:08:06,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 15:08:06,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-08-27 15:08:06,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 281 [2023-08-27 15:08:06,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 2049 transitions, 46490 flow. Second operand has 26 states, 26 states have (on average 81.8076923076923) internal successors, (2127), 26 states have internal predecessors, (2127), 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 15:08:06,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:08:06,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 281 [2023-08-27 15:08:06,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:08:31,569 INFO L124 PetriNetUnfolderBase]: 27876/48378 cut-off events. [2023-08-27 15:08:31,570 INFO L125 PetriNetUnfolderBase]: For 1201553/1201553 co-relation queries the response was YES. [2023-08-27 15:08:32,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394885 conditions, 48378 events. 27876/48378 cut-off events. For 1201553/1201553 co-relation queries the response was YES. Maximal size of possible extension queue 2254. Compared 433802 event pairs, 2789 based on Foata normal form. 450/48828 useless extension candidates. Maximal degree in co-relation 394740. Up to 22496 conditions per place. [2023-08-27 15:08:32,769 INFO L140 encePairwiseOnDemand]: 269/281 looper letters, 1471 selfloop transitions, 2137 changer transitions 0/3608 dead transitions. [2023-08-27 15:08:32,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 3608 transitions, 82506 flow [2023-08-27 15:08:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-27 15:08:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-27 15:08:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4295 transitions. [2023-08-27 15:08:32,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3252063299765276 [2023-08-27 15:08:32,773 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4295 transitions. [2023-08-27 15:08:32,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4295 transitions. [2023-08-27 15:08:32,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:08:32,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4295 transitions. [2023-08-27 15:08:32,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 91.38297872340425) internal successors, (4295), 47 states have internal predecessors, (4295), 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 15:08:32,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 281.0) internal successors, (13488), 48 states have internal predecessors, (13488), 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 15:08:32,783 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 281.0) internal successors, (13488), 48 states have internal predecessors, (13488), 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 15:08:32,783 INFO L175 Difference]: Start difference. First operand has 451 places, 2049 transitions, 46490 flow. Second operand 47 states and 4295 transitions. [2023-08-27 15:08:32,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 3608 transitions, 82506 flow [2023-08-27 15:09:09,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 3608 transitions, 81094 flow, removed 550 selfloop flow, removed 20 redundant places. [2023-08-27 15:09:09,313 INFO L231 Difference]: Finished difference. Result has 498 places, 2857 transitions, 73000 flow [2023-08-27 15:09:09,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=44189, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=73000, PETRI_PLACES=498, PETRI_TRANSITIONS=2857} [2023-08-27 15:09:09,315 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2023-08-27 15:09:09,315 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 2857 transitions, 73000 flow [2023-08-27 15:09:09,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 81.8076923076923) internal successors, (2127), 26 states have internal predecessors, (2127), 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 15:09:09,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:09:09,315 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:09:09,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-27 15:09:09,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:09:09,520 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:09:09,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:09:09,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1544139887, now seen corresponding path program 1 times [2023-08-27 15:09:09,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:09:09,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871401885] [2023-08-27 15:09:09,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:09:09,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:09:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:09:10,090 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 15:09:10,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:09:10,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871401885] [2023-08-27 15:09:10,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871401885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:09:10,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848682817] [2023-08-27 15:09:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:09:10,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:09:10,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:09:10,091 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:09:10,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 15:09:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:09:10,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-27 15:09:10,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:09:10,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-27 15:09:10,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:09:10,392 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:09:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:09:10,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 15:09:10,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:09:10,630 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2023-08-27 15:09:10,793 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 15:09:10,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:09:13,380 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:09:13,380 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 73 [2023-08-27 15:09:13,403 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:09:13,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 563 treesize of output 557 [2023-08-27 15:09:13,424 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:09:13,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 147 [2023-08-27 15:09:13,441 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:09:13,442 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 128 [2023-08-27 15:09:14,364 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:09:14,365 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 58 [2023-08-27 15:09:14,619 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 15:09:14,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848682817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:09:14,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:09:14,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 31 [2023-08-27 15:09:14,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403528072] [2023-08-27 15:09:14,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:09:14,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 15:09:14,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:09:14,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 15:09:14,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=909, Unknown=4, NotChecked=0, Total=1056 [2023-08-27 15:09:14,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 281 [2023-08-27 15:09:14,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 2857 transitions, 73000 flow. Second operand has 33 states, 33 states have (on average 71.45454545454545) internal successors, (2358), 33 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:09:14,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:09:14,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 281 [2023-08-27 15:09:14,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:09:31,120 WARN L234 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 124 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:09:39,209 WARN L234 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:09:41,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:09:43,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:09:50,160 WARN L234 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 126 DAG size of output: 92 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:09:56,797 WARN L234 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 141 DAG size of output: 112 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:10:14,799 WARN L234 SmtUtils]: Spent 12.22s on a formula simplification. DAG size of input: 107 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:10:19,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 15:10:21,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 15:10:29,717 WARN L234 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:10:31,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:10:39,389 WARN L234 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:10:43,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:10:52,302 WARN L234 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 94 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:11:11,574 WARN L234 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 129 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:11:22,314 WARN L234 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 115 DAG size of output: 110 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:11:30,885 WARN L234 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 123 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:11:33,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:11:35,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:11:43,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:11:47,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:11:50,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:11:54,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:12:03,408 WARN L234 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:12:21,204 WARN L234 SmtUtils]: Spent 14.34s on a formula simplification. DAG size of input: 120 DAG size of output: 115 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:12:23,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:12:25,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:12:40,175 WARN L234 SmtUtils]: Spent 6.14s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:13:11,695 INFO L124 PetriNetUnfolderBase]: 40127/69662 cut-off events. [2023-08-27 15:13:11,696 INFO L125 PetriNetUnfolderBase]: For 2322613/2322613 co-relation queries the response was YES. [2023-08-27 15:13:13,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628781 conditions, 69662 events. 40127/69662 cut-off events. For 2322613/2322613 co-relation queries the response was YES. Maximal size of possible extension queue 3366. Compared 660691 event pairs, 5518 based on Foata normal form. 448/70110 useless extension candidates. Maximal degree in co-relation 628621. Up to 32854 conditions per place. [2023-08-27 15:13:14,200 INFO L140 encePairwiseOnDemand]: 266/281 looper letters, 3333 selfloop transitions, 2248 changer transitions 28/5609 dead transitions. [2023-08-27 15:13:14,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 5609 transitions, 136710 flow [2023-08-27 15:13:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-08-27 15:13:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2023-08-27 15:13:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 8508 transitions. [2023-08-27 15:13:14,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27525072791976707 [2023-08-27 15:13:14,207 INFO L72 ComplementDD]: Start complementDD. Operand 110 states and 8508 transitions. [2023-08-27 15:13:14,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 8508 transitions. [2023-08-27 15:13:14,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:13:14,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 110 states and 8508 transitions. [2023-08-27 15:13:14,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 111 states, 110 states have (on average 77.34545454545454) internal successors, (8508), 110 states have internal predecessors, (8508), 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 15:13:14,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 111 states, 111 states have (on average 281.0) internal successors, (31191), 111 states have internal predecessors, (31191), 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 15:13:14,357 INFO L81 ComplementDD]: Finished complementDD. Result has 111 states, 111 states have (on average 281.0) internal successors, (31191), 111 states have internal predecessors, (31191), 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 15:13:14,357 INFO L175 Difference]: Start difference. First operand has 498 places, 2857 transitions, 73000 flow. Second operand 110 states and 8508 transitions. [2023-08-27 15:13:14,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 5609 transitions, 136710 flow [2023-08-27 15:14:56,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 5609 transitions, 131880 flow, removed 2173 selfloop flow, removed 11 redundant places. [2023-08-27 15:14:56,557 INFO L231 Difference]: Finished difference. Result has 622 places, 3885 transitions, 101190 flow [2023-08-27 15:14:56,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=69166, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=110, PETRI_FLOW=101190, PETRI_PLACES=622, PETRI_TRANSITIONS=3885} [2023-08-27 15:14:56,559 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 581 predicate places. [2023-08-27 15:14:56,559 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 3885 transitions, 101190 flow [2023-08-27 15:14:56,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 71.45454545454545) internal successors, (2358), 33 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:14:56,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:14:56,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:14:56,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 15:14:56,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-27 15:14:56,761 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-27 15:14:56,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:14:56,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1735747052, now seen corresponding path program 3 times [2023-08-27 15:14:56,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:14:56,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917212075] [2023-08-27 15:14:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:14:56,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:14:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:14:57,374 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 15:14:57,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:14:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917212075] [2023-08-27 15:14:57,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917212075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:14:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954382279] [2023-08-27 15:14:57,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 15:14:57,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:14:57,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:14:57,375 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 15:14:57,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 15:14:57,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 15:14:57,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:14:57,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-27 15:14:57,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:14:57,565 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-27 15:14:57,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 15:14:57,646 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-27 15:14:57,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 15:14:57,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2023-08-27 15:14:57,962 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 15:14:57,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:14:59,050 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 15:14:59,050 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 92 [2023-08-27 15:14:59,084 INFO L322 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-08-27 15:14:59,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 602 treesize of output 579 [2023-08-27 15:14:59,120 INFO L322 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-08-27 15:14:59,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 341 treesize of output 317 [2023-08-27 15:14:59,136 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-27 15:14:59,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 130 [2023-08-27 15:14:59,172 INFO L322 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-08-27 15:14:59,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 184 treesize of output 185 [2023-08-27 15:15:00,398 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 15:15:00,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954382279] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:15:00,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:15:00,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 31 [2023-08-27 15:15:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336099494] [2023-08-27 15:15:00,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:15:00,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-27 15:15:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:15:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-27 15:15:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=832, Unknown=2, NotChecked=0, Total=1056 [2023-08-27 15:15:00,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 281 [2023-08-27 15:15:00,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 3885 transitions, 101190 flow. Second operand has 33 states, 33 states have (on average 71.45454545454545) internal successors, (2358), 33 states have internal predecessors, (2358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:15:00,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:15:00,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 281 [2023-08-27 15:15:00,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:15:07,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:15:16,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:15:19,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:15:28,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:15:40,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:15:42,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:15:44,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:15:55,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:15:57,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:16:14,156 WARN L234 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 95 DAG size of output: 93 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 15:16:25,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:16:27,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:16:37,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:16:39,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:16:46,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:16:48,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:00,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:02,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:11,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:14,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:24,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:30,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:32,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:35,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:37,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:53,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:17:55,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:18:03,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:18:05,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:18:07,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:18:16,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:18:18,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:18:21,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:18:23,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 15:18:25,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-08-27 15:18:29,516 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 15:18:29,516 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 15:18:30,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-27 15:18:30,696 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 [2023-08-27 15:18:32,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2023-08-27 15:18:32,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 15:18:32,440 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-27 15:18:32,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-27 15:18:32,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-27 15:18:32,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-27 15:18:32,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 15:18:32,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 15:18:32,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (10 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 15:18:32,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 15:18:32,443 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:18:32,445 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 15:18:32,445 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 15:18:32,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:18:32 BasicIcfg [2023-08-27 15:18:32,447 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 15:18:32,447 INFO L158 Benchmark]: Toolchain (without parser) took 834677.90ms. Allocated memory was 388.0MB in the beginning and 7.1GB in the end (delta: 6.7GB). Free memory was 364.9MB in the beginning and 3.9GB in the end (delta: -3.5GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-08-27 15:18:32,447 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory is still 365.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 15:18:32,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.35ms. Allocated memory is still 388.0MB. Free memory was 364.9MB in the beginning and 352.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 15:18:32,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.00ms. Allocated memory is still 388.0MB. Free memory was 352.9MB in the beginning and 350.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 15:18:32,448 INFO L158 Benchmark]: Boogie Preprocessor took 24.06ms. Allocated memory is still 388.0MB. Free memory was 350.8MB in the beginning and 349.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 15:18:32,448 INFO L158 Benchmark]: RCFGBuilder took 501.69ms. Allocated memory is still 388.0MB. Free memory was 349.0MB in the beginning and 320.3MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 15:18:32,448 INFO L158 Benchmark]: TraceAbstraction took 833876.94ms. Allocated memory was 388.0MB in the beginning and 7.1GB in the end (delta: 6.7GB). Free memory was 319.3MB in the beginning and 3.9GB in the end (delta: -3.6GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-08-27 15:18:32,449 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory is still 365.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 227.35ms. Allocated memory is still 388.0MB. Free memory was 364.9MB in the beginning and 352.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.00ms. Allocated memory is still 388.0MB. Free memory was 352.9MB in the beginning and 350.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.06ms. Allocated memory is still 388.0MB. Free memory was 350.8MB in the beginning and 349.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 501.69ms. Allocated memory is still 388.0MB. Free memory was 349.0MB in the beginning and 320.3MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * TraceAbstraction took 833876.94ms. Allocated memory was 388.0MB in the beginning and 7.1GB in the end (delta: 6.7GB). Free memory was 319.3MB in the beginning and 3.9GB in the end (delta: -3.6GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 136 PlacesBefore, 41 PlacesAfterwards, 136 TransitionsBefore, 34 TransitionsAfterwards, 1782 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 7 ConcurrentYvCompositions, 7 ChoiceCompositions, 131 TotalNumberOfCompositions, 3127 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2317, independent: 2259, independent conditional: 0, independent unconditional: 2259, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 931, independent: 907, independent conditional: 0, independent unconditional: 907, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2317, independent: 1352, independent conditional: 0, independent unconditional: 1352, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 931, unknown conditional: 0, unknown unconditional: 931] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 91, Positive conditional cache size: 0, Positive unconditional cache size: 91, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 180 locations, 22 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: 833.8s, OverallIterations: 24, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 787.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 547 mSolverCounterUnknown, 6329 SdHoareTripleChecker+Valid, 125.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6329 mSDsluCounter, 642 SdHoareTripleChecker+Invalid, 122.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 300 IncrementalHoareTripleChecker+Unchecked, 573 mSDsCounter, 877 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20036 IncrementalHoareTripleChecker+Invalid, 21760 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 877 mSolverCounterUnsat, 69 mSDtfsCounter, 20036 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 984 GetRequests, 191 SyntacticMatches, 6 SemanticMatches, 787 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 14074 ImplicationChecksByTransitivity, 316.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101190occurred in iteration=23, InterpolantAutomatonStates: 542, 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, 35.1s InterpolantComputationTime, 520 NumberOfCodeBlocks, 510 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 646 ConstructedInterpolants, 91 QuantifiedInterpolants, 18452 SizeOfPredicates, 268 NumberOfNonLiveVariables, 3621 ConjunctsInSsa, 512 ConjunctsInUnsatCore, 59 InterpolantComputations, 12 PerfectInterpolantSequences, 55/215 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown