/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/04-mutex_07-ps_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:39:40,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:39:40,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:39:40,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:39:40,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:39:40,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:39:40,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:39:40,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:39:40,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:39:40,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:39:40,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:39:40,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:39:40,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:39:40,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:39:40,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:39:40,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:39:40,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:39:40,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:39:40,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:39:40,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:39:40,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:39:40,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:39:40,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:39:40,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:39:40,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:39:40,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:39:40,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:39:40,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:39:40,198 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 11:39:40,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:39:40,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:39:40,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:39:40,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:39:40,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:39:40,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:39:40,231 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:39:40,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:39:40,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:39:40,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:39:40,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:39:40,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:39:40,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:39:40,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:39:40,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:39:40,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:39:40,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:39:40,233 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:39:40,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:39:40,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:39:40,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:39:40,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:39:40,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:39:40,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:40,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:39:40,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:39:40,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:39:40,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:39:40,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:39:40,234 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:39:40,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:39:40,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:39:40,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:39:40,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:39:40,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:39:40,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:39:40,551 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:39:40,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_07-ps_nr.i [2022-09-16 11:39:40,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3785c8e4/cfc62932504c4db8ac53d4847a652292/FLAG7811c71a9 [2022-09-16 11:39:41,110 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:39:41,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_07-ps_nr.i [2022-09-16 11:39:41,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3785c8e4/cfc62932504c4db8ac53d4847a652292/FLAG7811c71a9 [2022-09-16 11:39:41,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3785c8e4/cfc62932504c4db8ac53d4847a652292 [2022-09-16 11:39:41,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:39:41,456 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:39:41,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:41,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:39:41,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:39:41,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:41" (1/1) ... [2022-09-16 11:39:41,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a03c941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:41, skipping insertion in model container [2022-09-16 11:39:41,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:41" (1/1) ... [2022-09-16 11:39:41,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:39:41,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:39:41,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:41,905 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:39:41,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:42,003 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:39:42,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42 WrapperNode [2022-09-16 11:39:42,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:42,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:42,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:39:42,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:39:42,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,054 INFO L138 Inliner]: procedures = 266, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2022-09-16 11:39:42,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:42,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:39:42,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:39:42,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:39:42,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:39:42,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:39:42,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:39:42,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:39:42,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (1/1) ... [2022-09-16 11:39:42,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:42,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:42,105 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 11:39:42,107 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 11:39:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:39:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:39:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:39:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:39:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:39:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-16 11:39:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-16 11:39:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:39:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:39:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:39:42,149 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 11:39:42,245 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:39:42,246 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:39:42,371 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:39:42,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:39:42,378 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 11:39:42,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:42 BoogieIcfgContainer [2022-09-16 11:39:42,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:39:42,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:39:42,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:39:42,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:39:42,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:39:41" (1/3) ... [2022-09-16 11:39:42,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a31ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:42, skipping insertion in model container [2022-09-16 11:39:42,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:42" (2/3) ... [2022-09-16 11:39:42,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a31ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:42, skipping insertion in model container [2022-09-16 11:39:42,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:42" (3/3) ... [2022-09-16 11:39:42,386 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_07-ps_nr.i [2022-09-16 11:39:42,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:39:42,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-09-16 11:39:42,419 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:39:42,477 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-16 11:39:42,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 141 flow [2022-09-16 11:39:42,539 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2022-09-16 11:39:42,539 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:39:42,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 67 events. 3/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2022-09-16 11:39:42,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 68 transitions, 141 flow [2022-09-16 11:39:42,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 137 flow [2022-09-16 11:39:42,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:39:42,561 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;@3a888945, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:39:42,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-16 11:39:42,576 INFO L130 PetriNetUnfolder]: 0/37 cut-off events. [2022-09-16 11:39:42,576 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:39:42,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:42,577 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] [2022-09-16 11:39:42,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:42,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash -322448414, now seen corresponding path program 1 times [2022-09-16 11:39:42,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:42,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58323246] [2022-09-16 11:39:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:42,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:42,944 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 11:39:42,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:42,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58323246] [2022-09-16 11:39:42,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58323246] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:42,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:42,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:39:42,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857020907] [2022-09-16 11:39:42,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:42,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:39:42,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:42,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:39:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:39:43,000 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2022-09-16 11:39:43,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 11:39:43,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:43,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2022-09-16 11:39:43,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:43,150 INFO L130 PetriNetUnfolder]: 17/151 cut-off events. [2022-09-16 11:39:43,151 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:39:43,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 151 events. 17/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 493 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 157. Up to 14 conditions per place. [2022-09-16 11:39:43,154 INFO L137 encePairwiseOnDemand]: 61/68 looper letters, 14 selfloop transitions, 5 changer transitions 7/81 dead transitions. [2022-09-16 11:39:43,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 215 flow [2022-09-16 11:39:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:39:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:39:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2022-09-16 11:39:43,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9235294117647059 [2022-09-16 11:39:43,176 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 314 transitions. [2022-09-16 11:39:43,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 314 transitions. [2022-09-16 11:39:43,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:43,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 314 transitions. [2022-09-16 11:39:43,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 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 11:39:43,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:43,196 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:43,198 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 137 flow. Second operand 5 states and 314 transitions. [2022-09-16 11:39:43,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 215 flow [2022-09-16 11:39:43,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:43,213 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 171 flow [2022-09-16 11:39:43,215 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2022-09-16 11:39:43,218 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2022-09-16 11:39:43,218 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 171 flow [2022-09-16 11:39:43,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 11:39:43,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:43,220 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] [2022-09-16 11:39:43,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:39:43,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:43,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:43,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1793557322, now seen corresponding path program 1 times [2022-09-16 11:39:43,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:43,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100272564] [2022-09-16 11:39:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:43,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:43,296 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 11:39:43,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:43,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100272564] [2022-09-16 11:39:43,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100272564] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:43,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:43,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:39:43,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281393718] [2022-09-16 11:39:43,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:43,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:43,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:43,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:43,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:43,301 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 68 [2022-09-16 11:39:43,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 11:39:43,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:43,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 68 [2022-09-16 11:39:43,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:43,351 INFO L130 PetriNetUnfolder]: 0/81 cut-off events. [2022-09-16 11:39:43,352 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-16 11:39:43,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 81 events. 0/81 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-09-16 11:39:43,353 INFO L137 encePairwiseOnDemand]: 65/68 looper letters, 6 selfloop transitions, 1 changer transitions 3/69 dead transitions. [2022-09-16 11:39:43,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 187 flow [2022-09-16 11:39:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:43,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:43,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2022-09-16 11:39:43,359 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9117647058823529 [2022-09-16 11:39:43,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2022-09-16 11:39:43,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2022-09-16 11:39:43,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:43,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2022-09-16 11:39:43,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 11:39:43,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 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 11:39:43,365 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 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 11:39:43,366 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 171 flow. Second operand 3 states and 186 transitions. [2022-09-16 11:39:43,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 187 flow [2022-09-16 11:39:43,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 180 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:43,368 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 159 flow [2022-09-16 11:39:43,368 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2022-09-16 11:39:43,369 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2022-09-16 11:39:43,369 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 159 flow [2022-09-16 11:39:43,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 11:39:43,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:43,370 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] [2022-09-16 11:39:43,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:39:43,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:43,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:43,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1267853358, now seen corresponding path program 1 times [2022-09-16 11:39:43,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:43,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209453690] [2022-09-16 11:39:43,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:43,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:43,465 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 11:39:43,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:43,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209453690] [2022-09-16 11:39:43,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209453690] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:43,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:43,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:39:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734096960] [2022-09-16 11:39:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:43,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:39:43,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:43,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:39:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:39:43,468 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 68 [2022-09-16 11:39:43,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 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 11:39:43,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:43,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 68 [2022-09-16 11:39:43,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:43,549 INFO L130 PetriNetUnfolder]: 6/118 cut-off events. [2022-09-16 11:39:43,549 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-09-16 11:39:43,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 118 events. 6/118 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 162. Up to 10 conditions per place. [2022-09-16 11:39:43,550 INFO L137 encePairwiseOnDemand]: 61/68 looper letters, 11 selfloop transitions, 5 changer transitions 5/74 dead transitions. [2022-09-16 11:39:43,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 227 flow [2022-09-16 11:39:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:39:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:39:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2022-09-16 11:39:43,552 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8970588235294118 [2022-09-16 11:39:43,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 305 transitions. [2022-09-16 11:39:43,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 305 transitions. [2022-09-16 11:39:43,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:43,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 305 transitions. [2022-09-16 11:39:43,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 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 11:39:43,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:43,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:43,556 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 159 flow. Second operand 5 states and 305 transitions. [2022-09-16 11:39:43,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 227 flow [2022-09-16 11:39:43,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 217 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-16 11:39:43,559 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 180 flow [2022-09-16 11:39:43,559 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2022-09-16 11:39:43,560 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2022-09-16 11:39:43,560 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 180 flow [2022-09-16 11:39:43,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 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 11:39:43,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:43,561 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] [2022-09-16 11:39:43,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:39:43,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:43,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:43,562 INFO L85 PathProgramCache]: Analyzing trace with hash 971809342, now seen corresponding path program 1 times [2022-09-16 11:39:43,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:43,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72620150] [2022-09-16 11:39:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:43,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:43,632 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 11:39:43,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:43,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72620150] [2022-09-16 11:39:43,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72620150] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:43,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:43,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:39:43,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011463938] [2022-09-16 11:39:43,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:43,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:43,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:43,635 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2022-09-16 11:39:43,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 11:39:43,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:43,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2022-09-16 11:39:43,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:43,673 INFO L130 PetriNetUnfolder]: 0/83 cut-off events. [2022-09-16 11:39:43,673 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-09-16 11:39:43,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 83 events. 0/83 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 113 event pairs, 0 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2022-09-16 11:39:43,674 INFO L137 encePairwiseOnDemand]: 64/68 looper letters, 7 selfloop transitions, 4 changer transitions 1/67 dead transitions. [2022-09-16 11:39:43,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 202 flow [2022-09-16 11:39:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2022-09-16 11:39:43,676 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9019607843137255 [2022-09-16 11:39:43,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2022-09-16 11:39:43,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2022-09-16 11:39:43,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:43,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2022-09-16 11:39:43,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 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 11:39:43,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 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 11:39:43,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 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 11:39:43,680 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 180 flow. Second operand 3 states and 184 transitions. [2022-09-16 11:39:43,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 202 flow [2022-09-16 11:39:43,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 67 transitions, 191 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-16 11:39:43,685 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 174 flow [2022-09-16 11:39:43,685 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2022-09-16 11:39:43,686 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, 10 predicate places. [2022-09-16 11:39:43,686 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 174 flow [2022-09-16 11:39:43,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 11:39:43,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:43,687 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] [2022-09-16 11:39:43,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:39:43,688 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:43,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash 538054559, now seen corresponding path program 1 times [2022-09-16 11:39:43,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:43,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980735182] [2022-09-16 11:39:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:43,797 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 11:39:43,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:43,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980735182] [2022-09-16 11:39:43,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980735182] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:43,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:43,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:39:43,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890828169] [2022-09-16 11:39:43,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:43,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:39:43,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:43,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:39:43,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:39:43,800 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 68 [2022-09-16 11:39:43,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 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 11:39:43,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:43,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 68 [2022-09-16 11:39:43,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:43,894 INFO L130 PetriNetUnfolder]: 0/75 cut-off events. [2022-09-16 11:39:43,895 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-09-16 11:39:43,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 75 events. 0/75 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-09-16 11:39:43,896 INFO L137 encePairwiseOnDemand]: 60/68 looper letters, 12 selfloop transitions, 8 changer transitions 2/69 dead transitions. [2022-09-16 11:39:43,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 69 transitions, 222 flow [2022-09-16 11:39:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:39:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:39:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 482 transitions. [2022-09-16 11:39:43,899 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7875816993464052 [2022-09-16 11:39:43,899 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 482 transitions. [2022-09-16 11:39:43,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 482 transitions. [2022-09-16 11:39:43,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:43,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 482 transitions. [2022-09-16 11:39:43,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 53.55555555555556) internal successors, (482), 9 states have internal predecessors, (482), 0 states have call successors, (0), 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 11:39:43,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 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 11:39:43,904 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 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 11:39:43,904 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 174 flow. Second operand 9 states and 482 transitions. [2022-09-16 11:39:43,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 69 transitions, 222 flow [2022-09-16 11:39:43,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 69 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:43,909 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 182 flow [2022-09-16 11:39:43,909 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=182, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2022-09-16 11:39:43,912 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2022-09-16 11:39:43,912 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 182 flow [2022-09-16 11:39:43,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 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 11:39:43,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:43,913 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] [2022-09-16 11:39:43,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:39:43,913 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:43,915 INFO L85 PathProgramCache]: Analyzing trace with hash -500177690, now seen corresponding path program 1 times [2022-09-16 11:39:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:43,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506312635] [2022-09-16 11:39:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:43,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:44,011 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 11:39:44,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:44,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506312635] [2022-09-16 11:39:44,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506312635] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:44,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:44,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:39:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954504251] [2022-09-16 11:39:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:44,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:39:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:44,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:39:44,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:39:44,016 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 68 [2022-09-16 11:39:44,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 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 11:39:44,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:44,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 68 [2022-09-16 11:39:44,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:44,085 INFO L130 PetriNetUnfolder]: 0/74 cut-off events. [2022-09-16 11:39:44,085 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-09-16 11:39:44,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 74 events. 0/74 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2022-09-16 11:39:44,086 INFO L137 encePairwiseOnDemand]: 61/68 looper letters, 10 selfloop transitions, 2 changer transitions 12/68 dead transitions. [2022-09-16 11:39:44,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 68 transitions, 228 flow [2022-09-16 11:39:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:39:44,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:39:44,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 379 transitions. [2022-09-16 11:39:44,088 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7962184873949579 [2022-09-16 11:39:44,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 379 transitions. [2022-09-16 11:39:44,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 379 transitions. [2022-09-16 11:39:44,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:44,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 379 transitions. [2022-09-16 11:39:44,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 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 11:39:44,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 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 11:39:44,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 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 11:39:44,090 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 182 flow. Second operand 7 states and 379 transitions. [2022-09-16 11:39:44,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 68 transitions, 228 flow [2022-09-16 11:39:44,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 205 flow, removed 1 selfloop flow, removed 9 redundant places. [2022-09-16 11:39:44,093 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 133 flow [2022-09-16 11:39:44,093 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2022-09-16 11:39:44,096 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2022-09-16 11:39:44,096 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 133 flow [2022-09-16 11:39:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 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 11:39:44,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:44,097 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] [2022-09-16 11:39:44,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:39:44,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash -520955449, now seen corresponding path program 1 times [2022-09-16 11:39:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:44,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481419065] [2022-09-16 11:39:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:44,183 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 11:39:44,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:44,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481419065] [2022-09-16 11:39:44,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481419065] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:44,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:44,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:39:44,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91838118] [2022-09-16 11:39:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:44,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:39:44,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:44,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:39:44,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:39:44,186 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 68 [2022-09-16 11:39:44,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 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 11:39:44,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:44,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 68 [2022-09-16 11:39:44,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:44,229 INFO L130 PetriNetUnfolder]: 0/57 cut-off events. [2022-09-16 11:39:44,230 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-16 11:39:44,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 57 events. 0/57 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 1/58 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-09-16 11:39:44,232 INFO L137 encePairwiseOnDemand]: 62/68 looper letters, 6 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2022-09-16 11:39:44,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 151 flow [2022-09-16 11:39:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:39:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:39:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 369 transitions. [2022-09-16 11:39:44,234 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7752100840336135 [2022-09-16 11:39:44,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 369 transitions. [2022-09-16 11:39:44,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 369 transitions. [2022-09-16 11:39:44,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:44,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 369 transitions. [2022-09-16 11:39:44,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:44,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 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 11:39:44,237 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 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 11:39:44,237 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 133 flow. Second operand 7 states and 369 transitions. [2022-09-16 11:39:44,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 55 transitions, 151 flow [2022-09-16 11:39:44,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 141 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:39:44,242 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 129 flow [2022-09-16 11:39:44,242 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2022-09-16 11:39:44,242 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2022-09-16 11:39:44,243 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 129 flow [2022-09-16 11:39:44,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 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 11:39:44,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:44,243 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 11:39:44,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:39:44,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-16 11:39:44,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:44,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1030250450, now seen corresponding path program 1 times [2022-09-16 11:39:44,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:44,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970027151] [2022-09-16 11:39:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:44,316 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 11:39:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:44,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970027151] [2022-09-16 11:39:44,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970027151] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:44,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:44,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:39:44,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954887666] [2022-09-16 11:39:44,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:44,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:39:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:39:44,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:39:44,319 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 68 [2022-09-16 11:39:44,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 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 11:39:44,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:44,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 68 [2022-09-16 11:39:44,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:44,357 INFO L130 PetriNetUnfolder]: 0/56 cut-off events. [2022-09-16 11:39:44,357 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-09-16 11:39:44,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 56 events. 0/56 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-09-16 11:39:44,358 INFO L137 encePairwiseOnDemand]: 62/68 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2022-09-16 11:39:44,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 54 transitions, 147 flow [2022-09-16 11:39:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:39:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:39:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 368 transitions. [2022-09-16 11:39:44,359 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.773109243697479 [2022-09-16 11:39:44,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 368 transitions. [2022-09-16 11:39:44,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 368 transitions. [2022-09-16 11:39:44,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:44,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 368 transitions. [2022-09-16 11:39:44,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 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 11:39:44,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 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 11:39:44,362 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 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 11:39:44,362 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 129 flow. Second operand 7 states and 368 transitions. [2022-09-16 11:39:44,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 54 transitions, 147 flow [2022-09-16 11:39:44,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 54 transitions, 136 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:39:44,363 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2022-09-16 11:39:44,363 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2022-09-16 11:39:44,365 INFO L287 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2022-09-16 11:39:44,365 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2022-09-16 11:39:44,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.833333333333336) internal successors, (317), 6 states have internal predecessors, (317), 0 states have call successors, (0), 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 11:39:44,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-09-16 11:39:44,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-09-16 11:39:44,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-09-16 11:39:44,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2022-09-16 11:39:44,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-09-16 11:39:44,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-09-16 11:39:44,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-09-16 11:39:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:39:44,371 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:44,376 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:39:44,376 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:39:44,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:39:44 BasicIcfg [2022-09-16 11:39:44,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:39:44,382 INFO L158 Benchmark]: Toolchain (without parser) took 2925.29ms. Allocated memory was 179.3MB in the beginning and 221.2MB in the end (delta: 41.9MB). Free memory was 121.1MB in the beginning and 76.9MB in the end (delta: 44.3MB). Peak memory consumption was 86.6MB. Max. memory is 8.0GB. [2022-09-16 11:39:44,382 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 179.3MB. Free memory was 139.9MB in the beginning and 139.7MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:39:44,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.94ms. Allocated memory is still 179.3MB. Free memory was 121.0MB in the beginning and 136.6MB in the end (delta: -15.7MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. [2022-09-16 11:39:44,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.17ms. Allocated memory is still 179.3MB. Free memory was 136.6MB in the beginning and 134.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:39:44,383 INFO L158 Benchmark]: Boogie Preprocessor took 16.76ms. Allocated memory is still 179.3MB. Free memory was 134.5MB in the beginning and 133.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:39:44,383 INFO L158 Benchmark]: RCFGBuilder took 307.17ms. Allocated memory is still 179.3MB. Free memory was 133.2MB in the beginning and 121.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-09-16 11:39:44,384 INFO L158 Benchmark]: TraceAbstraction took 2000.13ms. Allocated memory was 179.3MB in the beginning and 221.2MB in the end (delta: 41.9MB). Free memory was 120.6MB in the beginning and 76.9MB in the end (delta: 43.7MB). Peak memory consumption was 86.7MB. Max. memory is 8.0GB. [2022-09-16 11:39:44,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 179.3MB. Free memory was 139.9MB in the beginning and 139.7MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 546.94ms. Allocated memory is still 179.3MB. Free memory was 121.0MB in the beginning and 136.6MB in the end (delta: -15.7MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.17ms. Allocated memory is still 179.3MB. Free memory was 136.6MB in the beginning and 134.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.76ms. Allocated memory is still 179.3MB. Free memory was 134.5MB in the beginning and 133.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 307.17ms. Allocated memory is still 179.3MB. Free memory was 133.2MB in the beginning and 121.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 2000.13ms. Allocated memory was 179.3MB in the beginning and 221.2MB in the end (delta: 41.9MB). Free memory was 120.6MB in the beginning and 76.9MB in the end (delta: 43.7MB). Peak memory consumption was 86.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 945]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 945]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 932]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 81 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 195 IncrementalHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 50 mSDtfsCounter, 195 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=5, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:39:44,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...