/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 -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:38:22,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:38:22,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:38:22,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:38:22,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:38:22,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:38:22,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:38:22,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:38:22,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:38:22,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:38:22,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:38:22,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:38:22,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:38:22,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:38:22,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:38:22,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:38:22,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:38:22,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:38:22,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:38:22,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:38:22,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:38:22,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:38:22,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:38:22,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:38:22,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 22:38:22,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:38:22,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:38:22,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:38:22,753 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 [2022-09-20 22:38:22,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:38:22,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:38:22,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:38:22,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:38:22,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:38:22,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:38:22,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:38:22,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:38:22,783 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:38:22,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:38:22,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:38:22,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:38:22,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:38:22,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:38:22,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:38:22,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:38:22,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:38:22,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:38:22,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:38:22,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:38:22,786 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:38:22,786 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:38:22,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:38:22,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:38:22,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:38:22,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:38:22,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:38:23,000 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:38:23,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-09-20 22:38:23,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473d53bc9/f2814e0b23d2407bb06b868ba97682f9/FLAGbc6619591 [2022-09-20 22:38:23,454 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:38:23,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-09-20 22:38:23,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473d53bc9/f2814e0b23d2407bb06b868ba97682f9/FLAGbc6619591 [2022-09-20 22:38:23,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/473d53bc9/f2814e0b23d2407bb06b868ba97682f9 [2022-09-20 22:38:23,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:38:23,791 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:38:23,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:38:23,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:38:23,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:38:23,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:38:23" (1/1) ... [2022-09-20 22:38:23,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3893e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:23, skipping insertion in model container [2022-09-20 22:38:23,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:38:23" (1/1) ... [2022-09-20 22:38:23,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:38:23,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:38:24,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-09-20 22:38:24,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:38:24,206 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:38:24,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2022-09-20 22:38:24,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:38:24,256 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:38:24,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24 WrapperNode [2022-09-20 22:38:24,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:38:24,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:38:24,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:38:24,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:38:24,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,288 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-09-20 22:38:24,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:38:24,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:38:24,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:38:24,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:38:24,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:38:24,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:38:24,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:38:24,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:38:24,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (1/1) ... [2022-09-20 22:38:24,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:38:24,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:38:24,353 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) [2022-09-20 22:38:24,361 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 [2022-09-20 22:38:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:38:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 22:38:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:38:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:38:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-20 22:38:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-20 22:38:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:38:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:38:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:38:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:38:24,389 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:38:24,462 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:38:24,463 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:38:24,676 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:38:24,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:38:24,682 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:38:24,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:38:24 BoogieIcfgContainer [2022-09-20 22:38:24,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:38:24,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:38:24,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:38:24,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:38:24,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:38:23" (1/3) ... [2022-09-20 22:38:24,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6c8dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:38:24, skipping insertion in model container [2022-09-20 22:38:24,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:38:24" (2/3) ... [2022-09-20 22:38:24,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6c8dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:38:24, skipping insertion in model container [2022-09-20 22:38:24,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:38:24" (3/3) ... [2022-09-20 22:38:24,690 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2022-09-20 22:38:24,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:38:24,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-09-20 22:38:24,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:38:24,747 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 22:38:24,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 183 transitions, 371 flow [2022-09-20 22:38:24,835 INFO L130 PetriNetUnfolder]: 8/186 cut-off events. [2022-09-20 22:38:24,835 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:38:24,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 186 events. 8/186 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 163 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2022-09-20 22:38:24,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 183 transitions, 371 flow [2022-09-20 22:38:24,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 181 transitions, 365 flow [2022-09-20 22:38:24,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:38:24,863 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;@7faf190d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:38:24,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-20 22:38:24,879 INFO L130 PetriNetUnfolder]: 2/97 cut-off events. [2022-09-20 22:38:24,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:38:24,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:24,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:24,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash -930805020, now seen corresponding path program 1 times [2022-09-20 22:38:24,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:24,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129333826] [2022-09-20 22:38:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:24,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:25,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:25,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129333826] [2022-09-20 22:38:25,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129333826] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:25,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:25,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:38:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466698454] [2022-09-20 22:38:25,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:25,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:38:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:25,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:38:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:38:25,276 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 183 [2022-09-20 22:38:25,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 181 transitions, 365 flow. Second operand has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:25,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:25,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 183 [2022-09-20 22:38:25,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:25,586 INFO L130 PetriNetUnfolder]: 95/1143 cut-off events. [2022-09-20 22:38:25,587 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 22:38:25,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 1143 events. 95/1143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7372 event pairs, 25 based on Foata normal form. 93/1163 useless extension candidates. Maximal degree in co-relation 1332. Up to 89 conditions per place. [2022-09-20 22:38:25,598 INFO L137 encePairwiseOnDemand]: 161/183 looper letters, 52 selfloop transitions, 38 changer transitions 11/239 dead transitions. [2022-09-20 22:38:25,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 239 transitions, 673 flow [2022-09-20 22:38:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 22:38:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 22:38:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2885 transitions. [2022-09-20 22:38:25,616 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8297382801265458 [2022-09-20 22:38:25,617 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2885 transitions. [2022-09-20 22:38:25,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2885 transitions. [2022-09-20 22:38:25,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:25,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2885 transitions. [2022-09-20 22:38:25,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 151.8421052631579) internal successors, (2885), 19 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:25,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:25,645 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:25,646 INFO L175 Difference]: Start difference. First operand has 177 places, 181 transitions, 365 flow. Second operand 19 states and 2885 transitions. [2022-09-20 22:38:25,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 239 transitions, 673 flow [2022-09-20 22:38:25,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 239 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:38:25,655 INFO L231 Difference]: Finished difference. Result has 196 places, 197 transitions, 514 flow [2022-09-20 22:38:25,657 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=514, PETRI_PLACES=196, PETRI_TRANSITIONS=197} [2022-09-20 22:38:25,660 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 19 predicate places. [2022-09-20 22:38:25,660 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 197 transitions, 514 flow [2022-09-20 22:38:25,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:25,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:25,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:25,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:38:25,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1816353862, now seen corresponding path program 1 times [2022-09-20 22:38:25,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:25,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322277245] [2022-09-20 22:38:25,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:25,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:25,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:25,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322277245] [2022-09-20 22:38:25,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322277245] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:25,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:25,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:38:25,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842778684] [2022-09-20 22:38:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:38:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:38:25,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:38:25,884 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 183 [2022-09-20 22:38:25,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 197 transitions, 514 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:25,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:25,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 183 [2022-09-20 22:38:25,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:26,011 INFO L130 PetriNetUnfolder]: 19/584 cut-off events. [2022-09-20 22:38:26,011 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-09-20 22:38:26,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 584 events. 19/584 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2332 event pairs, 6 based on Foata normal form. 8/573 useless extension candidates. Maximal degree in co-relation 735. Up to 36 conditions per place. [2022-09-20 22:38:26,014 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 24 selfloop transitions, 8 changer transitions 0/180 dead transitions. [2022-09-20 22:38:26,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 180 transitions, 487 flow [2022-09-20 22:38:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:38:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:38:26,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2022-09-20 22:38:26,022 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8360655737704918 [2022-09-20 22:38:26,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2022-09-20 22:38:26,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2022-09-20 22:38:26,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:26,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2022-09-20 22:38:26,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 183.0) internal successors, (1098), 6 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,026 INFO L175 Difference]: Start difference. First operand has 196 places, 197 transitions, 514 flow. Second operand 5 states and 765 transitions. [2022-09-20 22:38:26,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 180 transitions, 487 flow [2022-09-20 22:38:26,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 180 transitions, 479 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-20 22:38:26,033 INFO L231 Difference]: Finished difference. Result has 183 places, 174 transitions, 427 flow [2022-09-20 22:38:26,033 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=183, PETRI_TRANSITIONS=174} [2022-09-20 22:38:26,034 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 6 predicate places. [2022-09-20 22:38:26,034 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 174 transitions, 427 flow [2022-09-20 22:38:26,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:26,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:26,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:38:26,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:26,037 INFO L85 PathProgramCache]: Analyzing trace with hash 621951114, now seen corresponding path program 1 times [2022-09-20 22:38:26,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:26,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826629587] [2022-09-20 22:38:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:26,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:26,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:26,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826629587] [2022-09-20 22:38:26,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826629587] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:26,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:26,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:38:26,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277997331] [2022-09-20 22:38:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:26,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:38:26,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:38:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:38:26,178 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 183 [2022-09-20 22:38:26,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 174 transitions, 427 flow. Second operand has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:26,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 183 [2022-09-20 22:38:26,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:26,306 INFO L130 PetriNetUnfolder]: 9/473 cut-off events. [2022-09-20 22:38:26,306 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-09-20 22:38:26,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 473 events. 9/473 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1492 event pairs, 0 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 604. Up to 58 conditions per place. [2022-09-20 22:38:26,308 INFO L137 encePairwiseOnDemand]: 169/183 looper letters, 29 selfloop transitions, 15 changer transitions 2/183 dead transitions. [2022-09-20 22:38:26,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 183 transitions, 533 flow [2022-09-20 22:38:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 22:38:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 22:38:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1495 transitions. [2022-09-20 22:38:26,311 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8169398907103825 [2022-09-20 22:38:26,311 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1495 transitions. [2022-09-20 22:38:26,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1495 transitions. [2022-09-20 22:38:26,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:26,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1495 transitions. [2022-09-20 22:38:26,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.5) internal successors, (1495), 10 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,317 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,317 INFO L175 Difference]: Start difference. First operand has 183 places, 174 transitions, 427 flow. Second operand 10 states and 1495 transitions. [2022-09-20 22:38:26,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 183 transitions, 533 flow [2022-09-20 22:38:26,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 183 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:38:26,324 INFO L231 Difference]: Finished difference. Result has 192 places, 174 transitions, 468 flow [2022-09-20 22:38:26,325 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=468, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2022-09-20 22:38:26,326 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 15 predicate places. [2022-09-20 22:38:26,327 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 468 flow [2022-09-20 22:38:26,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:26,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:26,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:38:26,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1029282794, now seen corresponding path program 1 times [2022-09-20 22:38:26,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:26,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806070946] [2022-09-20 22:38:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:26,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:26,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:26,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806070946] [2022-09-20 22:38:26,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806070946] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:26,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:26,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-09-20 22:38:26,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352949437] [2022-09-20 22:38:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:26,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-20 22:38:26,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:26,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-20 22:38:26,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-09-20 22:38:26,513 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 183 [2022-09-20 22:38:26,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 132.15384615384616) internal successors, (1718), 13 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:26,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 183 [2022-09-20 22:38:26,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:26,890 INFO L130 PetriNetUnfolder]: 42/496 cut-off events. [2022-09-20 22:38:26,890 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-09-20 22:38:26,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 806 conditions, 496 events. 42/496 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1761 event pairs, 0 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 739. Up to 38 conditions per place. [2022-09-20 22:38:26,892 INFO L137 encePairwiseOnDemand]: 164/183 looper letters, 70 selfloop transitions, 25 changer transitions 0/218 dead transitions. [2022-09-20 22:38:26,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 218 transitions, 782 flow [2022-09-20 22:38:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:38:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:38:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2306 transitions. [2022-09-20 22:38:26,896 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7412407585985213 [2022-09-20 22:38:26,896 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2306 transitions. [2022-09-20 22:38:26,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2306 transitions. [2022-09-20 22:38:26,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:26,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2306 transitions. [2022-09-20 22:38:26,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 135.64705882352942) internal successors, (2306), 17 states have internal predecessors, (2306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,904 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,904 INFO L175 Difference]: Start difference. First operand has 192 places, 174 transitions, 468 flow. Second operand 17 states and 2306 transitions. [2022-09-20 22:38:26,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 218 transitions, 782 flow [2022-09-20 22:38:26,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 218 transitions, 757 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 22:38:26,909 INFO L231 Difference]: Finished difference. Result has 207 places, 183 transitions, 576 flow [2022-09-20 22:38:26,910 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=576, PETRI_PLACES=207, PETRI_TRANSITIONS=183} [2022-09-20 22:38:26,910 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 30 predicate places. [2022-09-20 22:38:26,910 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 183 transitions, 576 flow [2022-09-20 22:38:26,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 132.15384615384616) internal successors, (1718), 13 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:26,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:26,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:38:26,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:26,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:26,912 INFO L85 PathProgramCache]: Analyzing trace with hash 985129269, now seen corresponding path program 1 times [2022-09-20 22:38:26,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:26,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336853380] [2022-09-20 22:38:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:26,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:26,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:26,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336853380] [2022-09-20 22:38:26,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336853380] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:26,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:26,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:38:26,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021534838] [2022-09-20 22:38:26,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:26,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:38:26,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:26,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:38:26,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:38:26,973 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-09-20 22:38:26,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 183 transitions, 576 flow. Second operand has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:26,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:26,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-09-20 22:38:26,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:27,148 INFO L130 PetriNetUnfolder]: 12/462 cut-off events. [2022-09-20 22:38:27,149 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-09-20 22:38:27,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 462 events. 12/462 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1437 event pairs, 0 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 699. Up to 32 conditions per place. [2022-09-20 22:38:27,150 INFO L137 encePairwiseOnDemand]: 171/183 looper letters, 48 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2022-09-20 22:38:27,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 198 transitions, 740 flow [2022-09-20 22:38:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:38:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:38:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1607 transitions. [2022-09-20 22:38:27,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7983109786388475 [2022-09-20 22:38:27,153 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1607 transitions. [2022-09-20 22:38:27,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1607 transitions. [2022-09-20 22:38:27,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:27,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1607 transitions. [2022-09-20 22:38:27,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.0909090909091) internal successors, (1607), 11 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,159 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,159 INFO L175 Difference]: Start difference. First operand has 207 places, 183 transitions, 576 flow. Second operand 11 states and 1607 transitions. [2022-09-20 22:38:27,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 198 transitions, 740 flow [2022-09-20 22:38:27,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 198 transitions, 714 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-09-20 22:38:27,163 INFO L231 Difference]: Finished difference. Result has 207 places, 181 transitions, 578 flow [2022-09-20 22:38:27,163 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=578, PETRI_PLACES=207, PETRI_TRANSITIONS=181} [2022-09-20 22:38:27,164 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 30 predicate places. [2022-09-20 22:38:27,164 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 181 transitions, 578 flow [2022-09-20 22:38:27,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:27,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:27,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:38:27,165 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash -590826818, now seen corresponding path program 1 times [2022-09-20 22:38:27,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:27,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105250382] [2022-09-20 22:38:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:27,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:27,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:27,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105250382] [2022-09-20 22:38:27,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105250382] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:27,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:27,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-09-20 22:38:27,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842211895] [2022-09-20 22:38:27,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:27,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-20 22:38:27,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-20 22:38:27,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-09-20 22:38:27,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 183 [2022-09-20 22:38:27,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 181 transitions, 578 flow. Second operand has 13 states, 13 states have (on average 136.46153846153845) internal successors, (1774), 13 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:27,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 183 [2022-09-20 22:38:27,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:27,594 INFO L130 PetriNetUnfolder]: 36/545 cut-off events. [2022-09-20 22:38:27,594 INFO L131 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2022-09-20 22:38:27,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 545 events. 36/545 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2011 event pairs, 13 based on Foata normal form. 1/537 useless extension candidates. Maximal degree in co-relation 906. Up to 85 conditions per place. [2022-09-20 22:38:27,596 INFO L137 encePairwiseOnDemand]: 165/183 looper letters, 38 selfloop transitions, 10 changer transitions 26/200 dead transitions. [2022-09-20 22:38:27,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 200 transitions, 762 flow [2022-09-20 22:38:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:38:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:38:27,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2210 transitions. [2022-09-20 22:38:27,599 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7547814207650273 [2022-09-20 22:38:27,599 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2210 transitions. [2022-09-20 22:38:27,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2210 transitions. [2022-09-20 22:38:27,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:27,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2210 transitions. [2022-09-20 22:38:27,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.125) internal successors, (2210), 16 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,607 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,607 INFO L175 Difference]: Start difference. First operand has 207 places, 181 transitions, 578 flow. Second operand 16 states and 2210 transitions. [2022-09-20 22:38:27,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 200 transitions, 762 flow [2022-09-20 22:38:27,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 200 transitions, 704 flow, removed 9 selfloop flow, removed 11 redundant places. [2022-09-20 22:38:27,611 INFO L231 Difference]: Finished difference. Result has 221 places, 170 transitions, 497 flow [2022-09-20 22:38:27,612 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=497, PETRI_PLACES=221, PETRI_TRANSITIONS=170} [2022-09-20 22:38:27,612 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 44 predicate places. [2022-09-20 22:38:27,612 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 170 transitions, 497 flow [2022-09-20 22:38:27,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 136.46153846153845) internal successors, (1774), 13 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:27,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:27,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:38:27,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2064819612, now seen corresponding path program 1 times [2022-09-20 22:38:27,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:27,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213284828] [2022-09-20 22:38:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:27,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:27,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:27,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213284828] [2022-09-20 22:38:27,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213284828] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:27,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:27,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:38:27,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74700353] [2022-09-20 22:38:27,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:27,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:38:27,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:27,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:38:27,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:38:27,734 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-09-20 22:38:27,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 170 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:27,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-09-20 22:38:27,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:27,861 INFO L130 PetriNetUnfolder]: 15/339 cut-off events. [2022-09-20 22:38:27,862 INFO L131 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-09-20 22:38:27,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 339 events. 15/339 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 795 event pairs, 7 based on Foata normal form. 2/334 useless extension candidates. Maximal degree in co-relation 559. Up to 30 conditions per place. [2022-09-20 22:38:27,863 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 29 selfloop transitions, 7 changer transitions 5/170 dead transitions. [2022-09-20 22:38:27,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 170 transitions, 547 flow [2022-09-20 22:38:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:38:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:38:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 876 transitions. [2022-09-20 22:38:27,866 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7978142076502732 [2022-09-20 22:38:27,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 876 transitions. [2022-09-20 22:38:27,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 876 transitions. [2022-09-20 22:38:27,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:27,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 876 transitions. [2022-09-20 22:38:27,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,869 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,869 INFO L175 Difference]: Start difference. First operand has 221 places, 170 transitions, 497 flow. Second operand 6 states and 876 transitions. [2022-09-20 22:38:27,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 170 transitions, 547 flow [2022-09-20 22:38:27,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 170 transitions, 477 flow, removed 14 selfloop flow, removed 22 redundant places. [2022-09-20 22:38:27,872 INFO L231 Difference]: Finished difference. Result has 182 places, 161 transitions, 386 flow [2022-09-20 22:38:27,873 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=182, PETRI_TRANSITIONS=161} [2022-09-20 22:38:27,873 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 5 predicate places. [2022-09-20 22:38:27,873 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 161 transitions, 386 flow [2022-09-20 22:38:27,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.125) internal successors, (1145), 8 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:27,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:27,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:38:27,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:27,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:27,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1525521826, now seen corresponding path program 1 times [2022-09-20 22:38:27,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:27,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148394325] [2022-09-20 22:38:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:27,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:27,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148394325] [2022-09-20 22:38:27,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148394325] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:27,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:27,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:38:27,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615318726] [2022-09-20 22:38:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:27,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:38:27,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:27,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:38:27,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:38:27,964 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-09-20 22:38:27,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 161 transitions, 386 flow. Second operand has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:27,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:27,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-09-20 22:38:27,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:28,104 INFO L130 PetriNetUnfolder]: 12/360 cut-off events. [2022-09-20 22:38:28,104 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-09-20 22:38:28,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 360 events. 12/360 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 844 event pairs, 0 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 456. Up to 21 conditions per place. [2022-09-20 22:38:28,105 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 24 selfloop transitions, 10 changer transitions 0/165 dead transitions. [2022-09-20 22:38:28,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 165 transitions, 462 flow [2022-09-20 22:38:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:38:28,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:38:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1295 transitions. [2022-09-20 22:38:28,108 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7862780813600486 [2022-09-20 22:38:28,108 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1295 transitions. [2022-09-20 22:38:28,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1295 transitions. [2022-09-20 22:38:28,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:28,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1295 transitions. [2022-09-20 22:38:28,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.88888888888889) internal successors, (1295), 9 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,113 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,113 INFO L175 Difference]: Start difference. First operand has 182 places, 161 transitions, 386 flow. Second operand 9 states and 1295 transitions. [2022-09-20 22:38:28,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 165 transitions, 462 flow [2022-09-20 22:38:28,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 428 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-09-20 22:38:28,116 INFO L231 Difference]: Finished difference. Result has 174 places, 159 transitions, 368 flow [2022-09-20 22:38:28,116 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=174, PETRI_TRANSITIONS=159} [2022-09-20 22:38:28,116 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, -3 predicate places. [2022-09-20 22:38:28,116 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 159 transitions, 368 flow [2022-09-20 22:38:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:28,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:28,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:38:28,117 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:28,118 INFO L85 PathProgramCache]: Analyzing trace with hash -843987398, now seen corresponding path program 1 times [2022-09-20 22:38:28,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:28,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911571273] [2022-09-20 22:38:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:28,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:28,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:28,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911571273] [2022-09-20 22:38:28,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911571273] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:28,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:28,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 22:38:28,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661089985] [2022-09-20 22:38:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:28,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 22:38:28,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:28,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 22:38:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:38:28,203 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 183 [2022-09-20 22:38:28,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 159 transitions, 368 flow. Second operand has 11 states, 11 states have (on average 138.9090909090909) internal successors, (1528), 11 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:28,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 183 [2022-09-20 22:38:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:28,467 INFO L130 PetriNetUnfolder]: 29/341 cut-off events. [2022-09-20 22:38:28,467 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-09-20 22:38:28,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 341 events. 29/341 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 854 event pairs, 12 based on Foata normal form. 4/338 useless extension candidates. Maximal degree in co-relation 475. Up to 44 conditions per place. [2022-09-20 22:38:28,468 INFO L137 encePairwiseOnDemand]: 167/183 looper letters, 21 selfloop transitions, 14 changer transitions 20/178 dead transitions. [2022-09-20 22:38:28,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 178 transitions, 518 flow [2022-09-20 22:38:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:38:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:38:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2366 transitions. [2022-09-20 22:38:28,473 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7605271616843459 [2022-09-20 22:38:28,473 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2366 transitions. [2022-09-20 22:38:28,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2366 transitions. [2022-09-20 22:38:28,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:28,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2366 transitions. [2022-09-20 22:38:28,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 139.1764705882353) internal successors, (2366), 17 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,483 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,483 INFO L175 Difference]: Start difference. First operand has 174 places, 159 transitions, 368 flow. Second operand 17 states and 2366 transitions. [2022-09-20 22:38:28,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 178 transitions, 518 flow [2022-09-20 22:38:28,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 178 transitions, 490 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 22:38:28,486 INFO L231 Difference]: Finished difference. Result has 189 places, 158 transitions, 388 flow [2022-09-20 22:38:28,487 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=388, PETRI_PLACES=189, PETRI_TRANSITIONS=158} [2022-09-20 22:38:28,488 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, 12 predicate places. [2022-09-20 22:38:28,488 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 158 transitions, 388 flow [2022-09-20 22:38:28,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.9090909090909) internal successors, (1528), 11 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:38:28,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:28,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:38:28,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-09-20 22:38:28,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:38:28,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411450, now seen corresponding path program 1 times [2022-09-20 22:38:28,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:38:28,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517749653] [2022-09-20 22:38:28,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:38:28,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:38:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:38:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:38:28,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:38:28,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517749653] [2022-09-20 22:38:28,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517749653] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:38:28,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:38:28,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:38:28,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059801065] [2022-09-20 22:38:28,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:38:28,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:38:28,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:38:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:38:28,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:38:28,654 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 183 [2022-09-20 22:38:28,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 158 transitions, 388 flow. Second operand has 8 states, 8 states have (on average 143.75) internal successors, (1150), 8 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:38:28,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 183 [2022-09-20 22:38:28,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:38:28,723 INFO L130 PetriNetUnfolder]: 8/177 cut-off events. [2022-09-20 22:38:28,723 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-09-20 22:38:28,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 177 events. 8/177 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 5/180 useless extension candidates. Maximal degree in co-relation 262. Up to 23 conditions per place. [2022-09-20 22:38:28,724 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 0 selfloop transitions, 0 changer transitions 147/147 dead transitions. [2022-09-20 22:38:28,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 147 transitions, 426 flow [2022-09-20 22:38:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:38:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:38:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2022-09-20 22:38:28,727 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7996357012750456 [2022-09-20 22:38:28,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2022-09-20 22:38:28,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2022-09-20 22:38:28,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:38:28,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2022-09-20 22:38:28,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,732 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 183.0) internal successors, (1281), 7 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,732 INFO L175 Difference]: Start difference. First operand has 189 places, 158 transitions, 388 flow. Second operand 6 states and 878 transitions. [2022-09-20 22:38:28,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 147 transitions, 426 flow [2022-09-20 22:38:28,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 147 transitions, 388 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-09-20 22:38:28,734 INFO L231 Difference]: Finished difference. Result has 159 places, 0 transitions, 0 flow [2022-09-20 22:38:28,734 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=159, PETRI_TRANSITIONS=0} [2022-09-20 22:38:28,735 INFO L287 CegarLoopForPetriNet]: 177 programPoint places, -18 predicate places. [2022-09-20 22:38:28,735 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 0 transitions, 0 flow [2022-09-20 22:38:28,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.75) internal successors, (1150), 8 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:38:28,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-09-20 22:38:28,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-09-20 22:38:28,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-09-20 22:38:28,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-09-20 22:38:28,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-09-20 22:38:28,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-09-20 22:38:28,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-09-20 22:38:28,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:38:28,740 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:38:28,744 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 22:38:28,744 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 22:38:28,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 10:38:28 BasicIcfg [2022-09-20 22:38:28,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 22:38:28,751 INFO L158 Benchmark]: Toolchain (without parser) took 4958.74ms. Allocated memory was 194.0MB in the beginning and 312.5MB in the end (delta: 118.5MB). Free memory was 163.4MB in the beginning and 253.6MB in the end (delta: -90.2MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-09-20 22:38:28,752 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:38:28,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.85ms. Allocated memory is still 194.0MB. Free memory was 163.1MB in the beginning and 155.4MB in the end (delta: 7.8MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2022-09-20 22:38:28,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.14ms. Allocated memory is still 194.0MB. Free memory was 155.1MB in the beginning and 152.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:38:28,752 INFO L158 Benchmark]: Boogie Preprocessor took 19.93ms. Allocated memory is still 194.0MB. Free memory was 152.9MB in the beginning and 151.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:38:28,752 INFO L158 Benchmark]: RCFGBuilder took 366.75ms. Allocated memory is still 194.0MB. Free memory was 151.4MB in the beginning and 135.6MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-09-20 22:38:28,754 INFO L158 Benchmark]: TraceAbstraction took 4063.96ms. Allocated memory was 194.0MB in the beginning and 312.5MB in the end (delta: 118.5MB). Free memory was 135.0MB in the beginning and 253.6MB in the end (delta: -118.6MB). Peak memory consumption was 982.0kB. Max. memory is 8.0GB. [2022-09-20 22:38:28,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 153.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 464.85ms. Allocated memory is still 194.0MB. Free memory was 163.1MB in the beginning and 155.4MB in the end (delta: 7.8MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.14ms. Allocated memory is still 194.0MB. Free memory was 155.1MB in the beginning and 152.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.93ms. Allocated memory is still 194.0MB. Free memory was 152.9MB in the beginning and 151.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 366.75ms. Allocated memory is still 194.0MB. Free memory was 151.4MB in the beginning and 135.6MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4063.96ms. Allocated memory was 194.0MB in the beginning and 312.5MB in the end (delta: 118.5MB). Free memory was 135.0MB in the beginning and 253.6MB in the end (delta: -118.6MB). Peak memory consumption was 982.0kB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 255 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: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 925 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 925 mSDsluCounter, 1406 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1181 mSDsCounter, 142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1112 IncrementalHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 142 mSolverCounterUnsat, 242 mSDtfsCounter, 1112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=578occurred in iteration=5, InterpolantAutomatonStates: 116, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1052 NumberOfCodeBlocks, 1052 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1042 ConstructedInterpolants, 0 QuantifiedInterpolants, 4894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 22:38:28,805 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...