/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:41:48,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:41:48,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:41:48,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-09-16 11:41:49,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:41:49,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:41:49,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:41:49,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:41:49,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:41:49,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:41:49,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:41:49,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:41:49,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:41:49,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:41:49,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:41:49,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:41:49,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:41:49,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:41:49,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:41:49,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:41:49,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:41:49,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:41:49,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:41:49,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:41:49,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:41:49,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:41:49,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:41:49,057 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:41:49,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:41:49,057 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:41:49,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:41:49,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:41:49,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:41:49,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:41:49,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:41:49,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:41:49,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:41:49,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:41:49,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:41:49,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:41:49,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:41:49,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:41:49,060 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:41:49,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:41:49,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:41:49,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:41:49,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:41:49,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:41:49,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:41:49,279 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:41:49,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-09-16 11:41:49,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c5ecf01e/0dba361b8d984ce9894aca9761153568/FLAG18696449a [2022-09-16 11:41:49,713 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:41:49,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2022-09-16 11:41:49,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c5ecf01e/0dba361b8d984ce9894aca9761153568/FLAG18696449a [2022-09-16 11:41:49,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c5ecf01e/0dba361b8d984ce9894aca9761153568 [2022-09-16 11:41:49,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:41:49,733 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:41:49,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:41:49,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:41:49,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:41:49,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:41:49" (1/1) ... [2022-09-16 11:41:49,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52de50fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:49, skipping insertion in model container [2022-09-16 11:41:49,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:41:49" (1/1) ... [2022-09-16 11:41:49,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:41:49,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:41:49,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-09-16 11:41:50,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:41:50,033 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:41:50,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2022-09-16 11:41:50,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:41:50,096 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:41:50,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50 WrapperNode [2022-09-16 11:41:50,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:41:50,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:41:50,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:41:50,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:41:50,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,144 INFO L138 Inliner]: procedures = 165, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-09-16 11:41:50,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:41:50,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:41:50,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:41:50,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:41:50,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:41:50,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:41:50,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:41:50,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:41:50,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (1/1) ... [2022-09-16 11:41:50,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:41:50,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:50,193 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) [2022-09-16 11:41:50,197 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 [2022-09-16 11:41:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-09-16 11:41:50,222 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-09-16 11:41:50,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:41:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:41:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:41:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:41:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:41:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:41:50,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:41:50,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:41:50,224 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:41:50,332 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:41:50,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:41:50,502 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:41:50,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:41:50,507 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:41:50,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:41:50 BoogieIcfgContainer [2022-09-16 11:41:50,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:41:50,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:41:50,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:41:50,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:41:50,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:41:49" (1/3) ... [2022-09-16 11:41:50,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68da671a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:41:50, skipping insertion in model container [2022-09-16 11:41:50,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:41:50" (2/3) ... [2022-09-16 11:41:50,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68da671a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:41:50, skipping insertion in model container [2022-09-16 11:41:50,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:41:50" (3/3) ... [2022-09-16 11:41:50,514 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2022-09-16 11:41:50,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:41:50,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-09-16 11:41:50,526 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:41:50,570 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:41:50,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 259 flow [2022-09-16 11:41:50,648 INFO L130 PetriNetUnfolder]: 10/126 cut-off events. [2022-09-16 11:41:50,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:41:50,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 126 events. 10/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 231 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-09-16 11:41:50,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 127 transitions, 259 flow [2022-09-16 11:41:50,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 126 transitions, 255 flow [2022-09-16 11:41:50,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:41:50,666 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;@3633c3ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:41:50,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-09-16 11:41:50,680 INFO L130 PetriNetUnfolder]: 3/80 cut-off events. [2022-09-16 11:41:50,680 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:41:50,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:50,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:50,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:50,684 INFO L85 PathProgramCache]: Analyzing trace with hash 118733176, now seen corresponding path program 1 times [2022-09-16 11:41:50,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:50,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932618897] [2022-09-16 11:41:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:50,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:50,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932618897] [2022-09-16 11:41:50,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932618897] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:50,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:50,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:41:50,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614547548] [2022-09-16 11:41:50,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:50,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:41:50,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:50,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:41:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:41:50,940 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 11:41:50,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:50,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:50,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 11:41:50,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:51,077 INFO L130 PetriNetUnfolder]: 127/500 cut-off events. [2022-09-16 11:41:51,077 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:41:51,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 500 events. 127/500 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2396 event pairs, 44 based on Foata normal form. 51/450 useless extension candidates. Maximal degree in co-relation 692. Up to 190 conditions per place. [2022-09-16 11:41:51,082 INFO L137 encePairwiseOnDemand]: 113/127 looper letters, 36 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2022-09-16 11:41:51,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 135 transitions, 353 flow [2022-09-16 11:41:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:41:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:41:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-09-16 11:41:51,114 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2022-09-16 11:41:51,115 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-09-16 11:41:51,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-09-16 11:41:51,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:51,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-09-16 11:41:51,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,126 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,127 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 255 flow. Second operand 5 states and 555 transitions. [2022-09-16 11:41:51,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 135 transitions, 353 flow [2022-09-16 11:41:51,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 352 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:41:51,135 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 270 flow [2022-09-16 11:41:51,137 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2022-09-16 11:41:51,141 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 1 predicate places. [2022-09-16 11:41:51,141 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 270 flow [2022-09-16 11:41:51,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:51,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:51,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:41:51,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash -66083864, now seen corresponding path program 1 times [2022-09-16 11:41:51,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:51,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245234538] [2022-09-16 11:41:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:51,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:51,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245234538] [2022-09-16 11:41:51,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245234538] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:51,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:51,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:41:51,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703326968] [2022-09-16 11:41:51,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:51,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:41:51,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:51,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:41:51,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:41:51,258 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-09-16 11:41:51,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:51,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-09-16 11:41:51,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:51,329 INFO L130 PetriNetUnfolder]: 24/333 cut-off events. [2022-09-16 11:41:51,329 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-09-16 11:41:51,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 333 events. 24/333 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1041 event pairs, 5 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 354. Up to 20 conditions per place. [2022-09-16 11:41:51,334 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 15 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2022-09-16 11:41:51,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 322 flow [2022-09-16 11:41:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:41:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:41:51,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-09-16 11:41:51,344 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8755905511811024 [2022-09-16 11:41:51,344 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-09-16 11:41:51,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-09-16 11:41:51,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:51,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-09-16 11:41:51,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,349 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,349 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 270 flow. Second operand 5 states and 556 transitions. [2022-09-16 11:41:51,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 322 flow [2022-09-16 11:41:51,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 126 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:41:51,357 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 298 flow [2022-09-16 11:41:51,357 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-09-16 11:41:51,358 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 7 predicate places. [2022-09-16 11:41:51,358 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 298 flow [2022-09-16 11:41:51,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:51,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:51,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:41:51,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:51,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:51,361 INFO L85 PathProgramCache]: Analyzing trace with hash 812908136, now seen corresponding path program 1 times [2022-09-16 11:41:51,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:51,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703734125] [2022-09-16 11:41:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:51,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:51,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703734125] [2022-09-16 11:41:51,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703734125] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:51,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:51,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:41:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221132970] [2022-09-16 11:41:51,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:51,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:41:51,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:41:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:41:51,420 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 127 [2022-09-16 11:41:51,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:51,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 127 [2022-09-16 11:41:51,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:51,455 INFO L130 PetriNetUnfolder]: 11/215 cut-off events. [2022-09-16 11:41:51,455 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-09-16 11:41:51,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 215 events. 11/215 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 451 event pairs, 1 based on Foata normal form. 5/207 useless extension candidates. Maximal degree in co-relation 226. Up to 16 conditions per place. [2022-09-16 11:41:51,457 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 8 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2022-09-16 11:41:51,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 324 flow [2022-09-16 11:41:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:41:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:41:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2022-09-16 11:41:51,458 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8740157480314961 [2022-09-16 11:41:51,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2022-09-16 11:41:51,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2022-09-16 11:41:51,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:51,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2022-09-16 11:41:51,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,463 INFO L175 Difference]: Start difference. First operand has 127 places, 122 transitions, 298 flow. Second operand 3 states and 333 transitions. [2022-09-16 11:41:51,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 324 flow [2022-09-16 11:41:51,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 122 transitions, 320 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-09-16 11:41:51,469 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 304 flow [2022-09-16 11:41:51,469 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2022-09-16 11:41:51,471 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 8 predicate places. [2022-09-16 11:41:51,471 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 304 flow [2022-09-16 11:41:51,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:51,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:51,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:41:51,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash -101091001, now seen corresponding path program 1 times [2022-09-16 11:41:51,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:51,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081025128] [2022-09-16 11:41:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:51,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081025128] [2022-09-16 11:41:51,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081025128] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:51,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:51,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:41:51,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256169942] [2022-09-16 11:41:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:51,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:41:51,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:41:51,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:41:51,564 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:41:51,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:51,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:41:51,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:51,692 INFO L130 PetriNetUnfolder]: 98/502 cut-off events. [2022-09-16 11:41:51,692 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-09-16 11:41:51,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 502 events. 98/502 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2271 event pairs, 20 based on Foata normal form. 3/457 useless extension candidates. Maximal degree in co-relation 774. Up to 81 conditions per place. [2022-09-16 11:41:51,697 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 51 selfloop transitions, 10 changer transitions 0/153 dead transitions. [2022-09-16 11:41:51,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 153 transitions, 498 flow [2022-09-16 11:41:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:41:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:41:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions. [2022-09-16 11:41:51,699 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7864173228346457 [2022-09-16 11:41:51,699 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions. [2022-09-16 11:41:51,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions. [2022-09-16 11:41:51,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:51,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions. [2022-09-16 11:41:51,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,704 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,704 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 304 flow. Second operand 8 states and 799 transitions. [2022-09-16 11:41:51,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 153 transitions, 498 flow [2022-09-16 11:41:51,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 153 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:41:51,710 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 362 flow [2022-09-16 11:41:51,710 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2022-09-16 11:41:51,711 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2022-09-16 11:41:51,712 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 362 flow [2022-09-16 11:41:51,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.66666666666667) internal successors, (568), 6 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:51,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:51,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:41:51,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:51,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2015844594, now seen corresponding path program 1 times [2022-09-16 11:41:51,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:51,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927797507] [2022-09-16 11:41:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:51,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:51,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927797507] [2022-09-16 11:41:51,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927797507] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:51,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:51,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:41:51,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414234560] [2022-09-16 11:41:51,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:51,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:41:51,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:51,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:41:51,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:41:51,782 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 11:41:51,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:51,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 11:41:51,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:51,862 INFO L130 PetriNetUnfolder]: 36/474 cut-off events. [2022-09-16 11:41:51,862 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2022-09-16 11:41:51,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 474 events. 36/474 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1582 event pairs, 8 based on Foata normal form. 7/465 useless extension candidates. Maximal degree in co-relation 682. Up to 57 conditions per place. [2022-09-16 11:41:51,865 INFO L137 encePairwiseOnDemand]: 118/127 looper letters, 23 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2022-09-16 11:41:51,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 129 transitions, 426 flow [2022-09-16 11:41:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:41:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:41:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-09-16 11:41:51,866 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.815748031496063 [2022-09-16 11:41:51,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-09-16 11:41:51,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-09-16 11:41:51,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:51,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-09-16 11:41:51,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,870 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 362 flow. Second operand 5 states and 518 transitions. [2022-09-16 11:41:51,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 129 transitions, 426 flow [2022-09-16 11:41:51,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 129 transitions, 420 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:41:51,899 INFO L231 Difference]: Finished difference. Result has 137 places, 126 transitions, 384 flow [2022-09-16 11:41:51,899 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=137, PETRI_TRANSITIONS=126} [2022-09-16 11:41:51,901 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 17 predicate places. [2022-09-16 11:41:51,901 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 126 transitions, 384 flow [2022-09-16 11:41:51,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:51,902 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:51,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:41:51,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:51,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1372599684, now seen corresponding path program 1 times [2022-09-16 11:41:51,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:51,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231596026] [2022-09-16 11:41:51,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:51,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-09-16 11:41:51,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:51,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231596026] [2022-09-16 11:41:51,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231596026] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:51,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:51,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:41:51,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812621816] [2022-09-16 11:41:51,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:51,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:41:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:51,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:41:51,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:41:51,953 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 11:41:51,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 126 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:51,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:51,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 11:41:51,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:52,016 INFO L130 PetriNetUnfolder]: 53/474 cut-off events. [2022-09-16 11:41:52,016 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2022-09-16 11:41:52,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 474 events. 53/474 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1748 event pairs, 17 based on Foata normal form. 6/454 useless extension candidates. Maximal degree in co-relation 768. Up to 59 conditions per place. [2022-09-16 11:41:52,019 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 23 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2022-09-16 11:41:52,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 133 transitions, 485 flow [2022-09-16 11:41:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:41:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:41:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-09-16 11:41:52,020 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.815748031496063 [2022-09-16 11:41:52,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-09-16 11:41:52,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-09-16 11:41:52,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:52,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-09-16 11:41:52,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,024 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,024 INFO L175 Difference]: Start difference. First operand has 137 places, 126 transitions, 384 flow. Second operand 5 states and 518 transitions. [2022-09-16 11:41:52,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 133 transitions, 485 flow [2022-09-16 11:41:52,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:41:52,028 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 428 flow [2022-09-16 11:41:52,028 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=428, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2022-09-16 11:41:52,030 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 20 predicate places. [2022-09-16 11:41:52,030 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 428 flow [2022-09-16 11:41:52,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:52,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:52,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:41:52,031 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:52,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash -399082489, now seen corresponding path program 1 times [2022-09-16 11:41:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:52,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324558978] [2022-09-16 11:41:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:52,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:52,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324558978] [2022-09-16 11:41:52,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324558978] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:41:52,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511814881] [2022-09-16 11:41:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:52,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:52,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:52,104 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) [2022-09-16 11:41:52,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:41:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:52,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:41:52,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:41:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:52,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:41:52,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511814881] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:52,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:41:52,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:41:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803429223] [2022-09-16 11:41:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:52,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:41:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:41:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:41:52,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 11:41:52,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:52,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 11:41:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:52,416 INFO L130 PetriNetUnfolder]: 55/521 cut-off events. [2022-09-16 11:41:52,416 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-09-16 11:41:52,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 521 events. 55/521 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1769 event pairs, 14 based on Foata normal form. 9/503 useless extension candidates. Maximal degree in co-relation 893. Up to 76 conditions per place. [2022-09-16 11:41:52,419 INFO L137 encePairwiseOnDemand]: 118/127 looper letters, 34 selfloop transitions, 10 changer transitions 2/143 dead transitions. [2022-09-16 11:41:52,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 143 transitions, 598 flow [2022-09-16 11:41:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:41:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:41:52,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 725 transitions. [2022-09-16 11:41:52,422 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8155230596175478 [2022-09-16 11:41:52,422 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 725 transitions. [2022-09-16 11:41:52,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 725 transitions. [2022-09-16 11:41:52,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:52,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 725 transitions. [2022-09-16 11:41:52,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,425 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 428 flow. Second operand 7 states and 725 transitions. [2022-09-16 11:41:52,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 143 transitions, 598 flow [2022-09-16 11:41:52,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 578 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-09-16 11:41:52,429 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 492 flow [2022-09-16 11:41:52,429 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2022-09-16 11:41:52,430 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 27 predicate places. [2022-09-16 11:41:52,430 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 492 flow [2022-09-16 11:41:52,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:52,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:52,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:41:52,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:52,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:52,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1279354972, now seen corresponding path program 1 times [2022-09-16 11:41:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:52,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794323182] [2022-09-16 11:41:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:52,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:52,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:52,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794323182] [2022-09-16 11:41:52,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794323182] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:41:52,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081341093] [2022-09-16 11:41:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:52,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:52,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:52,722 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) [2022-09-16 11:41:52,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:41:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:52,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:41:52,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:41:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:52,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:41:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:52,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081341093] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:41:52,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:41:52,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:41:52,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463926442] [2022-09-16 11:41:52,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:41:52,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:41:52,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:41:52,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:41:52,933 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-09-16 11:41:52,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 492 flow. Second operand has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:52,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:52,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-09-16 11:41:52,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:53,133 INFO L130 PetriNetUnfolder]: 47/884 cut-off events. [2022-09-16 11:41:53,133 INFO L131 PetriNetUnfolder]: For 669/669 co-relation queries the response was YES. [2022-09-16 11:41:53,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 884 events. 47/884 cut-off events. For 669/669 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3687 event pairs, 0 based on Foata normal form. 9/862 useless extension candidates. Maximal degree in co-relation 1550. Up to 51 conditions per place. [2022-09-16 11:41:53,138 INFO L137 encePairwiseOnDemand]: 120/127 looper letters, 23 selfloop transitions, 18 changer transitions 1/159 dead transitions. [2022-09-16 11:41:53,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 159 transitions, 652 flow [2022-09-16 11:41:53,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:41:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:41:53,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1971 transitions. [2022-09-16 11:41:53,142 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8622047244094488 [2022-09-16 11:41:53,142 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1971 transitions. [2022-09-16 11:41:53,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1971 transitions. [2022-09-16 11:41:53,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:53,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1971 transitions. [2022-09-16 11:41:53,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 109.5) internal successors, (1971), 18 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,149 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,149 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 492 flow. Second operand 18 states and 1971 transitions. [2022-09-16 11:41:53,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 159 transitions, 652 flow [2022-09-16 11:41:53,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 159 transitions, 644 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-09-16 11:41:53,154 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 590 flow [2022-09-16 11:41:53,154 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=590, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2022-09-16 11:41:53,154 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 45 predicate places. [2022-09-16 11:41:53,155 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 590 flow [2022-09-16 11:41:53,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 109.33333333333333) internal successors, (1312), 12 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:53,155 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:53,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:41:53,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-09-16 11:41:53,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:53,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:53,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1005298776, now seen corresponding path program 1 times [2022-09-16 11:41:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:53,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939966273] [2022-09-16 11:41:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:53,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:53,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939966273] [2022-09-16 11:41:53,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939966273] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:41:53,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009261668] [2022-09-16 11:41:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:53,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:53,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:53,437 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) [2022-09-16 11:41:53,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:41:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:53,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:41:53,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:41:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:53,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:41:53,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009261668] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:53,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:41:53,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:41:53,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490584625] [2022-09-16 11:41:53,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:53,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:41:53,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:53,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:41:53,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:41:53,555 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-09-16 11:41:53,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 590 flow. Second operand has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:53,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-09-16 11:41:53,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:53,687 INFO L130 PetriNetUnfolder]: 47/871 cut-off events. [2022-09-16 11:41:53,687 INFO L131 PetriNetUnfolder]: For 756/756 co-relation queries the response was YES. [2022-09-16 11:41:53,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 871 events. 47/871 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3597 event pairs, 0 based on Foata normal form. 13/853 useless extension candidates. Maximal degree in co-relation 1582. Up to 56 conditions per place. [2022-09-16 11:41:53,693 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 15 selfloop transitions, 11 changer transitions 1/144 dead transitions. [2022-09-16 11:41:53,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 144 transitions, 627 flow [2022-09-16 11:41:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:41:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:41:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-09-16 11:41:53,695 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8638920134983127 [2022-09-16 11:41:53,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-09-16 11:41:53,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-09-16 11:41:53,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:53,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-09-16 11:41:53,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,698 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,698 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 590 flow. Second operand 7 states and 768 transitions. [2022-09-16 11:41:53,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 144 transitions, 627 flow [2022-09-16 11:41:53,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 144 transitions, 595 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:41:53,703 INFO L231 Difference]: Finished difference. Result has 161 places, 140 transitions, 553 flow [2022-09-16 11:41:53,703 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=553, PETRI_PLACES=161, PETRI_TRANSITIONS=140} [2022-09-16 11:41:53,704 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 41 predicate places. [2022-09-16 11:41:53,704 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 140 transitions, 553 flow [2022-09-16 11:41:53,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:53,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:53,704 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:53,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:41:53,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:53,921 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash -800840621, now seen corresponding path program 1 times [2022-09-16 11:41:53,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:53,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778515191] [2022-09-16 11:41:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:53,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:53,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:53,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778515191] [2022-09-16 11:41:53,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778515191] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:41:53,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50973428] [2022-09-16 11:41:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:53,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:53,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:53,982 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) [2022-09-16 11:41:53,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:41:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:54,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:41:54,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:41:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:54,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:41:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:54,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50973428] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:41:54,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:41:54,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-09-16 11:41:54,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691247502] [2022-09-16 11:41:54,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:41:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:41:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:41:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:41:54,216 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:41:54,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 140 transitions, 553 flow. Second operand has 16 states, 16 states have (on average 95.3125) internal successors, (1525), 16 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:54,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:54,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:41:54,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:54,498 INFO L130 PetriNetUnfolder]: 268/1599 cut-off events. [2022-09-16 11:41:54,498 INFO L131 PetriNetUnfolder]: For 2060/2060 co-relation queries the response was YES. [2022-09-16 11:41:54,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 1599 events. 268/1599 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9748 event pairs, 46 based on Foata normal form. 42/1566 useless extension candidates. Maximal degree in co-relation 3345. Up to 132 conditions per place. [2022-09-16 11:41:54,509 INFO L137 encePairwiseOnDemand]: 114/127 looper letters, 63 selfloop transitions, 34 changer transitions 2/198 dead transitions. [2022-09-16 11:41:54,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 198 transitions, 1013 flow [2022-09-16 11:41:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 11:41:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 11:41:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2021 transitions. [2022-09-16 11:41:54,539 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7577802774653168 [2022-09-16 11:41:54,539 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2021 transitions. [2022-09-16 11:41:54,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2021 transitions. [2022-09-16 11:41:54,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:54,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2021 transitions. [2022-09-16 11:41:54,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.23809523809524) internal successors, (2021), 21 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:54,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 127.0) internal successors, (2794), 22 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:54,547 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 127.0) internal successors, (2794), 22 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:54,547 INFO L175 Difference]: Start difference. First operand has 161 places, 140 transitions, 553 flow. Second operand 21 states and 2021 transitions. [2022-09-16 11:41:54,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 198 transitions, 1013 flow [2022-09-16 11:41:54,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 198 transitions, 978 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-09-16 11:41:54,553 INFO L231 Difference]: Finished difference. Result has 179 places, 154 transitions, 743 flow [2022-09-16 11:41:54,553 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=743, PETRI_PLACES=179, PETRI_TRANSITIONS=154} [2022-09-16 11:41:54,554 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 59 predicate places. [2022-09-16 11:41:54,554 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 154 transitions, 743 flow [2022-09-16 11:41:54,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.3125) internal successors, (1525), 16 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:54,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:54,555 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:54,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:41:54,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:54,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1608210795, now seen corresponding path program 1 times [2022-09-16 11:41:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:54,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467208639] [2022-09-16 11:41:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:41:54,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:54,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467208639] [2022-09-16 11:41:54,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467208639] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:54,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:54,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:41:54,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490355762] [2022-09-16 11:41:54,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:54,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:41:54,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:41:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:41:54,809 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:41:54,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 154 transitions, 743 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:54,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:54,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:41:54,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:55,011 INFO L130 PetriNetUnfolder]: 267/1654 cut-off events. [2022-09-16 11:41:55,012 INFO L131 PetriNetUnfolder]: For 3060/3060 co-relation queries the response was YES. [2022-09-16 11:41:55,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3714 conditions, 1654 events. 267/1654 cut-off events. For 3060/3060 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10345 event pairs, 40 based on Foata normal form. 34/1619 useless extension candidates. Maximal degree in co-relation 3640. Up to 233 conditions per place. [2022-09-16 11:41:55,023 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 37 selfloop transitions, 29 changer transitions 0/165 dead transitions. [2022-09-16 11:41:55,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 926 flow [2022-09-16 11:41:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:41:55,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:41:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 774 transitions. [2022-09-16 11:41:55,025 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7618110236220472 [2022-09-16 11:41:55,025 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 774 transitions. [2022-09-16 11:41:55,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 774 transitions. [2022-09-16 11:41:55,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:55,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 774 transitions. [2022-09-16 11:41:55,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 96.75) internal successors, (774), 8 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,028 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,028 INFO L175 Difference]: Start difference. First operand has 179 places, 154 transitions, 743 flow. Second operand 8 states and 774 transitions. [2022-09-16 11:41:55,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 926 flow [2022-09-16 11:41:55,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 849 flow, removed 19 selfloop flow, removed 8 redundant places. [2022-09-16 11:41:55,036 INFO L231 Difference]: Finished difference. Result has 177 places, 155 transitions, 788 flow [2022-09-16 11:41:55,036 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=177, PETRI_TRANSITIONS=155} [2022-09-16 11:41:55,037 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 57 predicate places. [2022-09-16 11:41:55,037 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 155 transitions, 788 flow [2022-09-16 11:41:55,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:55,037 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:55,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:41:55,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:55,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:55,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1097852462, now seen corresponding path program 1 times [2022-09-16 11:41:55,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:55,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074212344] [2022-09-16 11:41:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:55,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-09-16 11:41:55,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:55,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074212344] [2022-09-16 11:41:55,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074212344] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:41:55,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634653915] [2022-09-16 11:41:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:55,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:55,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:55,098 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) [2022-09-16 11:41:55,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:41:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:55,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:41:55,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:41:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-09-16 11:41:55,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:41:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 85 proven. 90 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-09-16 11:41:55,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634653915] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:41:55,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:41:55,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-09-16 11:41:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987218862] [2022-09-16 11:41:55,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:41:55,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:41:55,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:41:55,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:41:55,374 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 11:41:55,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 155 transitions, 788 flow. Second operand has 18 states, 18 states have (on average 101.38888888888889) internal successors, (1825), 18 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:55,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 11:41:55,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:55,656 INFO L130 PetriNetUnfolder]: 136/1387 cut-off events. [2022-09-16 11:41:55,657 INFO L131 PetriNetUnfolder]: For 2865/2865 co-relation queries the response was YES. [2022-09-16 11:41:55,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1387 events. 136/1387 cut-off events. For 2865/2865 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7765 event pairs, 60 based on Foata normal form. 4/1308 useless extension candidates. Maximal degree in co-relation 3016. Up to 212 conditions per place. [2022-09-16 11:41:55,665 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 81 selfloop transitions, 35 changer transitions 3/224 dead transitions. [2022-09-16 11:41:55,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 224 transitions, 1441 flow [2022-09-16 11:41:55,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:41:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:41:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2256 transitions. [2022-09-16 11:41:55,669 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.807444523979957 [2022-09-16 11:41:55,669 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2256 transitions. [2022-09-16 11:41:55,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2256 transitions. [2022-09-16 11:41:55,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:55,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2256 transitions. [2022-09-16 11:41:55,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 102.54545454545455) internal successors, (2256), 22 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 127.0) internal successors, (2921), 23 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,677 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 127.0) internal successors, (2921), 23 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,677 INFO L175 Difference]: Start difference. First operand has 177 places, 155 transitions, 788 flow. Second operand 22 states and 2256 transitions. [2022-09-16 11:41:55,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 224 transitions, 1441 flow [2022-09-16 11:41:55,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 224 transitions, 1380 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-09-16 11:41:55,685 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 1045 flow [2022-09-16 11:41:55,686 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1045, PETRI_PLACES=200, PETRI_TRANSITIONS=174} [2022-09-16 11:41:55,686 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 80 predicate places. [2022-09-16 11:41:55,686 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 1045 flow [2022-09-16 11:41:55,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.38888888888889) internal successors, (1825), 18 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:55,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:55,687 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:55,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:41:55,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:41:55,903 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash -667910424, now seen corresponding path program 2 times [2022-09-16 11:41:55,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:55,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927639845] [2022-09-16 11:41:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:55,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:55,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:55,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927639845] [2022-09-16 11:41:55,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927639845] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:41:55,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240715463] [2022-09-16 11:41:55,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:41:55,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:55,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:55,993 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) [2022-09-16 11:41:55,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:41:56,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:41:56,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:41:56,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 11 conjunts are in the unsatisfiable core [2022-09-16 11:41:56,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:41:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:56,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:41:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:41:56,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240715463] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:41:56,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:41:56,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-09-16 11:41:56,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570410850] [2022-09-16 11:41:56,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:41:56,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-16 11:41:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:56,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-16 11:41:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-09-16 11:41:56,329 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-09-16 11:41:56,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 174 transitions, 1045 flow. Second operand has 24 states, 24 states have (on average 109.66666666666667) internal successors, (2632), 24 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:56,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:56,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-09-16 11:41:56,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:56,872 INFO L130 PetriNetUnfolder]: 124/2566 cut-off events. [2022-09-16 11:41:56,872 INFO L131 PetriNetUnfolder]: For 5066/5066 co-relation queries the response was YES. [2022-09-16 11:41:56,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 2566 events. 124/2566 cut-off events. For 5066/5066 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 12442 event pairs, 0 based on Foata normal form. 33/2508 useless extension candidates. Maximal degree in co-relation 5425. Up to 117 conditions per place. [2022-09-16 11:41:56,888 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 47 selfloop transitions, 32 changer transitions 1/231 dead transitions. [2022-09-16 11:41:56,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 1397 flow [2022-09-16 11:41:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-16 11:41:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-16 11:41:56,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3510 transitions. [2022-09-16 11:41:56,892 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8636811023622047 [2022-09-16 11:41:56,892 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3510 transitions. [2022-09-16 11:41:56,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3510 transitions. [2022-09-16 11:41:56,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:56,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3510 transitions. [2022-09-16 11:41:56,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 109.6875) internal successors, (3510), 32 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:56,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 127.0) internal successors, (4191), 33 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:56,912 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 127.0) internal successors, (4191), 33 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:56,912 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 1045 flow. Second operand 32 states and 3510 transitions. [2022-09-16 11:41:56,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 1397 flow [2022-09-16 11:41:56,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 1367 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-09-16 11:41:56,926 INFO L231 Difference]: Finished difference. Result has 235 places, 193 transitions, 1207 flow [2022-09-16 11:41:56,926 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1207, PETRI_PLACES=235, PETRI_TRANSITIONS=193} [2022-09-16 11:41:56,927 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 115 predicate places. [2022-09-16 11:41:56,927 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 193 transitions, 1207 flow [2022-09-16 11:41:56,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 109.66666666666667) internal successors, (2632), 24 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:56,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:56,928 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:56,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:41:57,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:57,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:57,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:57,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1567588292, now seen corresponding path program 2 times [2022-09-16 11:41:57,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:57,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344298338] [2022-09-16 11:41:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:57,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 455 proven. 532 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-09-16 11:41:57,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:57,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344298338] [2022-09-16 11:41:57,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344298338] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:41:57,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481277928] [2022-09-16 11:41:57,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:41:57,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:57,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:57,304 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) [2022-09-16 11:41:57,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:41:57,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:41:57,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:41:57,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-16 11:41:57,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:41:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 80 proven. 877 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-09-16 11:41:57,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:41:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1065 backedges. 80 proven. 877 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-09-16 11:41:57,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481277928] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:41:57,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:41:57,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-09-16 11:41:57,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555549176] [2022-09-16 11:41:57,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:41:57,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-09-16 11:41:57,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-09-16 11:41:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-09-16 11:41:57,960 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 11:41:57,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 193 transitions, 1207 flow. Second operand has 34 states, 34 states have (on average 101.5) internal successors, (3451), 34 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:57,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:57,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 11:41:57,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:58,988 INFO L130 PetriNetUnfolder]: 383/3751 cut-off events. [2022-09-16 11:41:58,988 INFO L131 PetriNetUnfolder]: For 9810/9810 co-relation queries the response was YES. [2022-09-16 11:41:59,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8920 conditions, 3751 events. 383/3751 cut-off events. For 9810/9810 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 23468 event pairs, 172 based on Foata normal form. 8/3537 useless extension candidates. Maximal degree in co-relation 8833. Up to 625 conditions per place. [2022-09-16 11:41:59,010 INFO L137 encePairwiseOnDemand]: 119/127 looper letters, 145 selfloop transitions, 67 changer transitions 3/339 dead transitions. [2022-09-16 11:41:59,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 339 transitions, 2583 flow [2022-09-16 11:41:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-09-16 11:41:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-09-16 11:41:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4708 transitions. [2022-09-16 11:41:59,016 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8058883943854844 [2022-09-16 11:41:59,016 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4708 transitions. [2022-09-16 11:41:59,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4708 transitions. [2022-09-16 11:41:59,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:59,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4708 transitions. [2022-09-16 11:41:59,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 102.34782608695652) internal successors, (4708), 46 states have internal predecessors, (4708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:59,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:59,031 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:59,031 INFO L175 Difference]: Start difference. First operand has 235 places, 193 transitions, 1207 flow. Second operand 46 states and 4708 transitions. [2022-09-16 11:41:59,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 339 transitions, 2583 flow [2022-09-16 11:41:59,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 339 transitions, 2545 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-09-16 11:41:59,053 INFO L231 Difference]: Finished difference. Result has 278 places, 226 transitions, 1770 flow [2022-09-16 11:41:59,054 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1770, PETRI_PLACES=278, PETRI_TRANSITIONS=226} [2022-09-16 11:41:59,054 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 158 predicate places. [2022-09-16 11:41:59,054 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 226 transitions, 1770 flow [2022-09-16 11:41:59,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 101.5) internal successors, (3451), 34 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:59,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:59,055 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:41:59,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:41:59,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:59,271 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:41:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1262867040, now seen corresponding path program 1 times [2022-09-16 11:41:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:59,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28282280] [2022-09-16 11:41:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:59,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 74 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2022-09-16 11:41:59,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:59,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28282280] [2022-09-16 11:41:59,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28282280] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:41:59,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643601912] [2022-09-16 11:41:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:59,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:41:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:41:59,361 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) [2022-09-16 11:41:59,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:41:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:59,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:41:59,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:41:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 67 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-09-16 11:41:59,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:41:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 451 proven. 67 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-09-16 11:41:59,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643601912] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:41:59,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:41:59,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2022-09-16 11:41:59,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286758140] [2022-09-16 11:41:59,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:41:59,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:41:59,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:59,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:41:59,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:41:59,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:41:59,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 226 transitions, 1770 flow. Second operand has 16 states, 16 states have (on average 96.0625) internal successors, (1537), 16 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:59,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:59,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:41:59,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:01,618 INFO L130 PetriNetUnfolder]: 1527/9547 cut-off events. [2022-09-16 11:42:01,618 INFO L131 PetriNetUnfolder]: For 29181/29181 co-relation queries the response was YES. [2022-09-16 11:42:01,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23775 conditions, 9547 events. 1527/9547 cut-off events. For 29181/29181 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 81651 event pairs, 445 based on Foata normal form. 81/9023 useless extension candidates. Maximal degree in co-relation 23677. Up to 763 conditions per place. [2022-09-16 11:42:01,723 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 147 selfloop transitions, 73 changer transitions 0/338 dead transitions. [2022-09-16 11:42:01,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 338 transitions, 2932 flow [2022-09-16 11:42:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-16 11:42:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-09-16 11:42:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2434 transitions. [2022-09-16 11:42:01,726 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7666141732283465 [2022-09-16 11:42:01,726 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2434 transitions. [2022-09-16 11:42:01,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2434 transitions. [2022-09-16 11:42:01,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:01,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2434 transitions. [2022-09-16 11:42:01,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 97.36) internal successors, (2434), 25 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:01,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 127.0) internal successors, (3302), 26 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:01,733 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 127.0) internal successors, (3302), 26 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:01,733 INFO L175 Difference]: Start difference. First operand has 278 places, 226 transitions, 1770 flow. Second operand 25 states and 2434 transitions. [2022-09-16 11:42:01,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 338 transitions, 2932 flow [2022-09-16 11:42:01,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 338 transitions, 2813 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-09-16 11:42:01,785 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 2278 flow [2022-09-16 11:42:01,785 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2278, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-09-16 11:42:01,785 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 171 predicate places. [2022-09-16 11:42:01,785 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 2278 flow [2022-09-16 11:42:01,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 96.0625) internal successors, (1537), 16 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:01,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:01,786 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:01,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-09-16 11:42:01,996 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,SelfDestructingSolverStorable14 [2022-09-16 11:42:01,996 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:42:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1119342665, now seen corresponding path program 2 times [2022-09-16 11:42:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:01,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628390181] [2022-09-16 11:42:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 506 proven. 163 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2022-09-16 11:42:02,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:02,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628390181] [2022-09-16 11:42:02,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628390181] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:02,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125554175] [2022-09-16 11:42:02,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:42:02,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:02,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:02,124 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) [2022-09-16 11:42:02,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:42:02,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:42:02,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:42:02,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:42:02,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 170 proven. 421 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-09-16 11:42:02,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:42:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 170 proven. 421 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-09-16 11:42:02,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125554175] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:42:02,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:42:02,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-09-16 11:42:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171323464] [2022-09-16 11:42:02,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:42:02,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-16 11:42:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-16 11:42:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-09-16 11:42:02,726 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:42:02,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 2278 flow. Second operand has 24 states, 24 states have (on average 96.0) internal successors, (2304), 24 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:02,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:02,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:42:02,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:06,357 INFO L130 PetriNetUnfolder]: 2447/15886 cut-off events. [2022-09-16 11:42:06,358 INFO L131 PetriNetUnfolder]: For 55876/55876 co-relation queries the response was YES. [2022-09-16 11:42:06,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40960 conditions, 15886 events. 2447/15886 cut-off events. For 55876/55876 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 157875 event pairs, 506 based on Foata normal form. 72/14945 useless extension candidates. Maximal degree in co-relation 40854. Up to 1260 conditions per place. [2022-09-16 11:42:06,613 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 142 selfloop transitions, 155 changer transitions 1/416 dead transitions. [2022-09-16 11:42:06,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 416 transitions, 4082 flow [2022-09-16 11:42:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:42:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-09-16 11:42:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3477 transitions. [2022-09-16 11:42:06,618 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.760498687664042 [2022-09-16 11:42:06,618 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3477 transitions. [2022-09-16 11:42:06,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3477 transitions. [2022-09-16 11:42:06,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:06,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3477 transitions. [2022-09-16 11:42:06,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 96.58333333333333) internal successors, (3477), 36 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 127.0) internal successors, (4699), 37 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,627 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 127.0) internal successors, (4699), 37 states have internal predecessors, (4699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,628 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 2278 flow. Second operand 36 states and 3477 transitions. [2022-09-16 11:42:06,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 416 transitions, 4082 flow [2022-09-16 11:42:06,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 416 transitions, 3991 flow, removed 41 selfloop flow, removed 4 redundant places. [2022-09-16 11:42:06,750 INFO L231 Difference]: Finished difference. Result has 327 places, 306 transitions, 3284 flow [2022-09-16 11:42:06,750 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3284, PETRI_PLACES=327, PETRI_TRANSITIONS=306} [2022-09-16 11:42:06,751 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 207 predicate places. [2022-09-16 11:42:06,751 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 306 transitions, 3284 flow [2022-09-16 11:42:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 96.0) internal successors, (2304), 24 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:06,752 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:06,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:42:06,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:42:06,963 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:42:06,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:06,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1636734505, now seen corresponding path program 3 times [2022-09-16 11:42:06,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:06,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767035990] [2022-09-16 11:42:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:06,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 508 proven. 371 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-09-16 11:42:07,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:07,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767035990] [2022-09-16 11:42:07,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767035990] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:07,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540748821] [2022-09-16 11:42:07,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:42:07,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:07,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:07,112 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) [2022-09-16 11:42:07,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:42:07,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-09-16 11:42:07,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:42:07,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-16 11:42:07,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 80 proven. 752 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-09-16 11:42:07,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:42:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 80 proven. 752 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-09-16 11:42:07,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540748821] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:42:07,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:42:07,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 28 [2022-09-16 11:42:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61616368] [2022-09-16 11:42:07,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:42:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-09-16 11:42:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-09-16 11:42:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:42:07,823 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:42:07,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 306 transitions, 3284 flow. Second operand has 28 states, 28 states have (on average 95.92857142857143) internal successors, (2686), 28 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:07,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:07,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:42:07,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:12,425 INFO L130 PetriNetUnfolder]: 3022/19333 cut-off events. [2022-09-16 11:42:12,425 INFO L131 PetriNetUnfolder]: For 80168/80168 co-relation queries the response was YES. [2022-09-16 11:42:12,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52514 conditions, 19333 events. 3022/19333 cut-off events. For 80168/80168 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 204654 event pairs, 833 based on Foata normal form. 54/18111 useless extension candidates. Maximal degree in co-relation 52403. Up to 1560 conditions per place. [2022-09-16 11:42:12,562 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 237 selfloop transitions, 166 changer transitions 0/521 dead transitions. [2022-09-16 11:42:12,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 521 transitions, 5747 flow [2022-09-16 11:42:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-09-16 11:42:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-09-16 11:42:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4472 transitions. [2022-09-16 11:42:12,566 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.765491270112975 [2022-09-16 11:42:12,566 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4472 transitions. [2022-09-16 11:42:12,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4472 transitions. [2022-09-16 11:42:12,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:12,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4472 transitions. [2022-09-16 11:42:12,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 97.21739130434783) internal successors, (4472), 46 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:12,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:12,576 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 127.0) internal successors, (5969), 47 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:12,576 INFO L175 Difference]: Start difference. First operand has 327 places, 306 transitions, 3284 flow. Second operand 46 states and 4472 transitions. [2022-09-16 11:42:12,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 521 transitions, 5747 flow [2022-09-16 11:42:12,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 521 transitions, 5669 flow, removed 25 selfloop flow, removed 11 redundant places. [2022-09-16 11:42:12,759 INFO L231 Difference]: Finished difference. Result has 370 places, 343 transitions, 4321 flow [2022-09-16 11:42:12,759 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4321, PETRI_PLACES=370, PETRI_TRANSITIONS=343} [2022-09-16 11:42:12,759 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 250 predicate places. [2022-09-16 11:42:12,760 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 343 transitions, 4321 flow [2022-09-16 11:42:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 95.92857142857143) internal successors, (2686), 28 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:12,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:12,761 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:12,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:42:12,979 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,SelfDestructingSolverStorable16 [2022-09-16 11:42:12,979 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:42:12,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:12,980 INFO L85 PathProgramCache]: Analyzing trace with hash 641505128, now seen corresponding path program 3 times [2022-09-16 11:42:12,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:12,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684316592] [2022-09-16 11:42:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:12,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:13,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:13,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684316592] [2022-09-16 11:42:13,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684316592] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:13,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290210362] [2022-09-16 11:42:13,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:42:13,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:13,193 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) [2022-09-16 11:42:13,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:42:13,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-09-16 11:42:13,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:42:13,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 23 conjunts are in the unsatisfiable core [2022-09-16 11:42:13,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:13,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:42:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:42:14,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290210362] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:42:14,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:42:14,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-09-16 11:42:14,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47019087] [2022-09-16 11:42:14,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:42:14,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-09-16 11:42:14,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:14,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-09-16 11:42:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-09-16 11:42:14,075 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 127 [2022-09-16 11:42:14,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 343 transitions, 4321 flow. Second operand has 48 states, 48 states have (on average 109.83333333333333) internal successors, (5272), 48 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:14,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:14,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 127 [2022-09-16 11:42:14,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:22,807 INFO L130 PetriNetUnfolder]: 775/23917 cut-off events. [2022-09-16 11:42:22,807 INFO L131 PetriNetUnfolder]: For 123448/123448 co-relation queries the response was YES. [2022-09-16 11:42:23,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64777 conditions, 23917 events. 775/23917 cut-off events. For 123448/123448 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 204837 event pairs, 0 based on Foata normal form. 283/23237 useless extension candidates. Maximal degree in co-relation 64659. Up to 1159 conditions per place. [2022-09-16 11:42:23,051 INFO L137 encePairwiseOnDemand]: 121/127 looper letters, 94 selfloop transitions, 68 changer transitions 2/465 dead transitions. [2022-09-16 11:42:23,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 465 transitions, 5140 flow [2022-09-16 11:42:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-09-16 11:42:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-09-16 11:42:23,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 7452 transitions. [2022-09-16 11:42:23,056 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8628994905048634 [2022-09-16 11:42:23,056 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 7452 transitions. [2022-09-16 11:42:23,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 7452 transitions. [2022-09-16 11:42:23,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:23,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 7452 transitions. [2022-09-16 11:42:23,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 109.58823529411765) internal successors, (7452), 68 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:23,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 127.0) internal successors, (8763), 69 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:23,073 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 127.0) internal successors, (8763), 69 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:23,073 INFO L175 Difference]: Start difference. First operand has 370 places, 343 transitions, 4321 flow. Second operand 68 states and 7452 transitions. [2022-09-16 11:42:23,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 465 transitions, 5140 flow [2022-09-16 11:42:23,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 465 transitions, 5031 flow, removed 26 selfloop flow, removed 14 redundant places. [2022-09-16 11:42:23,410 INFO L231 Difference]: Finished difference. Result has 436 places, 380 transitions, 4629 flow [2022-09-16 11:42:23,410 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=4212, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=4629, PETRI_PLACES=436, PETRI_TRANSITIONS=380} [2022-09-16 11:42:23,410 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 316 predicate places. [2022-09-16 11:42:23,410 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 380 transitions, 4629 flow [2022-09-16 11:42:23,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 109.83333333333333) internal successors, (5272), 48 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:23,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:23,412 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 15, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:42:23,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:42:23,627 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,SelfDestructingSolverStorable17 [2022-09-16 11:42:23,627 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:42:23,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:23,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1622554033, now seen corresponding path program 4 times [2022-09-16 11:42:23,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:23,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002961517] [2022-09-16 11:42:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:23,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2178 proven. 677 refuted. 0 times theorem prover too weak. 1773 trivial. 0 not checked. [2022-09-16 11:42:23,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:23,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002961517] [2022-09-16 11:42:23,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002961517] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:42:23,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767789046] [2022-09-16 11:42:23,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:42:23,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:42:23,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:42:23,830 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) [2022-09-16 11:42:23,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:42:24,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:42:24,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:42:24,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 20 conjunts are in the unsatisfiable core [2022-09-16 11:42:24,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:42:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2269 proven. 799 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-09-16 11:42:24,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:42:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4628 backedges. 2269 proven. 799 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-09-16 11:42:24,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767789046] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:42:24,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:42:24,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2022-09-16 11:42:24,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628832590] [2022-09-16 11:42:24,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:42:24,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-09-16 11:42:24,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:24,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-09-16 11:42:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-09-16 11:42:24,657 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:42:24,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 380 transitions, 4629 flow. Second operand has 36 states, 36 states have (on average 95.80555555555556) internal successors, (3449), 36 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:24,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:24,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:42:24,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:57,615 INFO L130 PetriNetUnfolder]: 12408/80254 cut-off events. [2022-09-16 11:42:57,615 INFO L131 PetriNetUnfolder]: For 437834/437834 co-relation queries the response was YES. [2022-09-16 11:42:59,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232018 conditions, 80254 events. 12408/80254 cut-off events. For 437834/437834 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 971149 event pairs, 3058 based on Foata normal form. 224/75058 useless extension candidates. Maximal degree in co-relation 231887. Up to 6566 conditions per place. [2022-09-16 11:42:59,392 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 284 selfloop transitions, 249 changer transitions 1/689 dead transitions. [2022-09-16 11:42:59,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 689 transitions, 8744 flow [2022-09-16 11:42:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-09-16 11:42:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-09-16 11:42:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5813 transitions. [2022-09-16 11:42:59,398 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7628608923884515 [2022-09-16 11:42:59,398 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5813 transitions. [2022-09-16 11:42:59,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5813 transitions. [2022-09-16 11:42:59,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:59,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5813 transitions. [2022-09-16 11:42:59,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 96.88333333333334) internal successors, (5813), 60 states have internal predecessors, (5813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:59,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 127.0) internal successors, (7747), 61 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:59,416 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 127.0) internal successors, (7747), 61 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:59,416 INFO L175 Difference]: Start difference. First operand has 436 places, 380 transitions, 4629 flow. Second operand 60 states and 5813 transitions. [2022-09-16 11:42:59,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 689 transitions, 8744 flow [2022-09-16 11:43:00,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 689 transitions, 8658 flow, removed 14 selfloop flow, removed 29 redundant places. [2022-09-16 11:43:00,839 INFO L231 Difference]: Finished difference. Result has 480 places, 468 transitions, 6897 flow [2022-09-16 11:43:00,840 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=4543, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=6897, PETRI_PLACES=480, PETRI_TRANSITIONS=468} [2022-09-16 11:43:00,840 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 360 predicate places. [2022-09-16 11:43:00,840 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 468 transitions, 6897 flow [2022-09-16 11:43:00,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 95.80555555555556) internal successors, (3449), 36 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:00,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:00,841 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 13, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:00,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-09-16 11:43:01,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:43:01,049 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:43:01,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1044271457, now seen corresponding path program 5 times [2022-09-16 11:43:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:01,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264428634] [2022-09-16 11:43:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4713 backedges. 2324 proven. 1082 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2022-09-16 11:43:01,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:01,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264428634] [2022-09-16 11:43:01,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264428634] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:43:01,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475589546] [2022-09-16 11:43:01,288 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:43:01,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:43:01,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:43:01,289 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) [2022-09-16 11:43:01,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:43:01,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2022-09-16 11:43:01,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:43:01,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 24 conjunts are in the unsatisfiable core [2022-09-16 11:43:01,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:43:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4713 backedges. 2324 proven. 1082 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2022-09-16 11:43:01,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:43:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4713 backedges. 2324 proven. 1082 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2022-09-16 11:43:02,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475589546] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:43:02,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:43:02,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2022-09-16 11:43:02,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722856080] [2022-09-16 11:43:02,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:43:02,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-09-16 11:43:02,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:02,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-09-16 11:43:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2022-09-16 11:43:02,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:43:02,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 468 transitions, 6897 flow. Second operand has 44 states, 44 states have (on average 95.72727272727273) internal successors, (4212), 44 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:02,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:02,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:43:02,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:43:47,983 INFO L130 PetriNetUnfolder]: 15287/99493 cut-off events. [2022-09-16 11:43:47,984 INFO L131 PetriNetUnfolder]: For 688672/688672 co-relation queries the response was YES. [2022-09-16 11:43:50,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301487 conditions, 99493 events. 15287/99493 cut-off events. For 688672/688672 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 1265379 event pairs, 3676 based on Foata normal form. 230/92984 useless extension candidates. Maximal degree in co-relation 301340. Up to 8128 conditions per place. [2022-09-16 11:43:50,724 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 345 selfloop transitions, 343 changer transitions 1/844 dead transitions. [2022-09-16 11:43:50,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 844 transitions, 12218 flow [2022-09-16 11:43:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-09-16 11:43:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-09-16 11:43:50,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 7266 transitions. [2022-09-16 11:43:50,729 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7628346456692914 [2022-09-16 11:43:50,729 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 7266 transitions. [2022-09-16 11:43:50,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 7266 transitions. [2022-09-16 11:43:50,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:43:50,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 7266 transitions. [2022-09-16 11:43:50,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 96.88) internal successors, (7266), 75 states have internal predecessors, (7266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:50,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 127.0) internal successors, (9652), 76 states have internal predecessors, (9652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:50,744 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 127.0) internal successors, (9652), 76 states have internal predecessors, (9652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:50,744 INFO L175 Difference]: Start difference. First operand has 480 places, 468 transitions, 6897 flow. Second operand 75 states and 7266 transitions. [2022-09-16 11:43:50,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 844 transitions, 12218 flow [2022-09-16 11:43:53,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 844 transitions, 12019 flow, removed 77 selfloop flow, removed 20 redundant places. [2022-09-16 11:43:53,590 INFO L231 Difference]: Finished difference. Result has 549 places, 560 transitions, 9611 flow [2022-09-16 11:43:53,590 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=6750, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=9611, PETRI_PLACES=549, PETRI_TRANSITIONS=560} [2022-09-16 11:43:53,591 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 429 predicate places. [2022-09-16 11:43:53,591 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 560 transitions, 9611 flow [2022-09-16 11:43:53,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 95.72727272727273) internal successors, (4212), 44 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:53,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:43:53,592 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:43:53,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 11:43:53,796 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,SelfDestructingSolverStorable19 [2022-09-16 11:43:53,796 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:43:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:43:53,796 INFO L85 PathProgramCache]: Analyzing trace with hash 604329175, now seen corresponding path program 6 times [2022-09-16 11:43:53,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:43:53,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515478834] [2022-09-16 11:43:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:43:53,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:43:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:43:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 2326 proven. 1579 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-09-16 11:43:54,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:43:54,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515478834] [2022-09-16 11:43:54,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515478834] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:43:54,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263295483] [2022-09-16 11:43:54,084 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:43:54,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:43:54,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:43:54,085 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) [2022-09-16 11:43:54,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 11:43:54,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-09-16 11:43:54,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:43:54,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 28 conjunts are in the unsatisfiable core [2022-09-16 11:43:54,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:43:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 176 proven. 3629 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2022-09-16 11:43:54,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:43:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 176 proven. 3629 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2022-09-16 11:43:55,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263295483] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:43:55,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:43:55,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2022-09-16 11:43:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259517757] [2022-09-16 11:43:55,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:43:55,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-09-16 11:43:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:43:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-09-16 11:43:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=655, Invalid=1997, Unknown=0, NotChecked=0, Total=2652 [2022-09-16 11:43:55,501 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:43:55,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 560 transitions, 9611 flow. Second operand has 52 states, 52 states have (on average 95.73076923076923) internal successors, (4978), 52 states have internal predecessors, (4978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:43:55,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:43:55,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:43:55,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:44:57,812 INFO L130 PetriNetUnfolder]: 17955/117272 cut-off events. [2022-09-16 11:44:57,822 INFO L131 PetriNetUnfolder]: For 992022/992022 co-relation queries the response was YES. [2022-09-16 11:45:01,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371281 conditions, 117272 events. 17955/117272 cut-off events. For 992022/992022 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 1549241 event pairs, 4302 based on Foata normal form. 208/109515 useless extension candidates. Maximal degree in co-relation 371118. Up to 9565 conditions per place. [2022-09-16 11:45:01,943 INFO L137 encePairwiseOnDemand]: 117/127 looper letters, 410 selfloop transitions, 450 changer transitions 1/1016 dead transitions. [2022-09-16 11:45:01,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 1016 transitions, 16555 flow [2022-09-16 11:45:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-09-16 11:45:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-09-16 11:45:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 8719 transitions. [2022-09-16 11:45:01,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7628171478565179 [2022-09-16 11:45:01,951 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 8719 transitions. [2022-09-16 11:45:01,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 8719 transitions. [2022-09-16 11:45:01,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:01,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 8719 transitions. [2022-09-16 11:45:01,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 96.87777777777778) internal successors, (8719), 90 states have internal predecessors, (8719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:01,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 127.0) internal successors, (11557), 91 states have internal predecessors, (11557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:01,995 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 127.0) internal successors, (11557), 91 states have internal predecessors, (11557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:01,995 INFO L175 Difference]: Start difference. First operand has 549 places, 560 transitions, 9611 flow. Second operand 90 states and 8719 transitions. [2022-09-16 11:45:01,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 1016 transitions, 16555 flow [2022-09-16 11:45:08,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 1016 transitions, 16238 flow, removed 124 selfloop flow, removed 27 redundant places. [2022-09-16 11:45:08,151 INFO L231 Difference]: Finished difference. Result has 626 places, 670 transitions, 13117 flow [2022-09-16 11:45:08,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=9368, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=351, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=13117, PETRI_PLACES=626, PETRI_TRANSITIONS=670} [2022-09-16 11:45:08,153 INFO L287 CegarLoopForPetriNet]: 120 programPoint places, 506 predicate places. [2022-09-16 11:45:08,153 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 670 transitions, 13117 flow [2022-09-16 11:45:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 95.73076923076923) internal successors, (4978), 52 states have internal predecessors, (4978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:08,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:08,154 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 15, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:08,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-16 11:45:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:08,359 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-09-16 11:45:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash 534154920, now seen corresponding path program 1 times [2022-09-16 11:45:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:08,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139014882] [2022-09-16 11:45:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:08,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 2178 proven. 676 refuted. 0 times theorem prover too weak. 1796 trivial. 0 not checked. [2022-09-16 11:45:08,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:08,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139014882] [2022-09-16 11:45:08,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139014882] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:45:08,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733183634] [2022-09-16 11:45:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:08,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:08,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:08,559 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) [2022-09-16 11:45:08,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-09-16 11:45:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:08,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 22 conjunts are in the unsatisfiable core [2022-09-16 11:45:08,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:45:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 2178 proven. 676 refuted. 0 times theorem prover too weak. 1796 trivial. 0 not checked. [2022-09-16 11:45:09,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:45:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 2178 proven. 676 refuted. 0 times theorem prover too weak. 1796 trivial. 0 not checked. [2022-09-16 11:45:09,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733183634] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:45:09,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:45:09,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-09-16 11:45:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975536564] [2022-09-16 11:45:09,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:45:09,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-09-16 11:45:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-09-16 11:45:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2022-09-16 11:45:09,462 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 127 [2022-09-16 11:45:09,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 670 transitions, 13117 flow. Second operand has 34 states, 34 states have (on average 96.11764705882354) internal successors, (3268), 34 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:09,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:09,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 127 [2022-09-16 11:45:09,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand