/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/28-race_reach_46-escape_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:45:59,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:45:59,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:45:59,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:45:59,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:45:59,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:45:59,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:45:59,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:45:59,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:45:59,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:45:59,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:45:59,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:45:59,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:45:59,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:45:59,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:45:59,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:45:59,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:45:59,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:45:59,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:45:59,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:45:59,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:45:59,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:45:59,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:45:59,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:45:59,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 20:45:59,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:45:59,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:45:59,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:45:59,992 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 20:46:00,015 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:46:00,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:46:00,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:46:00,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:46:00,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:46:00,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:46:00,017 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:46:00,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:46:00,017 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:46:00,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:46:00,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:46:00,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:46:00,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:46:00,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:46:00,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:46:00,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:46:00,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:46:00,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:46:00,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:46:00,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:46:00,020 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:46:00,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:46:00,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:46:00,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:46:00,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:46:00,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:46:00,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:46:00,199 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:46:00,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2022-09-20 20:46:00,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20f525c8/6bf5654abde048fdb75b359f011f6385/FLAG085a4c8fa [2022-09-20 20:46:00,620 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:46:00,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2022-09-20 20:46:00,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20f525c8/6bf5654abde048fdb75b359f011f6385/FLAG085a4c8fa [2022-09-20 20:46:00,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20f525c8/6bf5654abde048fdb75b359f011f6385 [2022-09-20 20:46:00,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:46:00,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:46:00,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:46:00,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:46:01,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:46:01,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:46:00" (1/1) ... [2022-09-20 20:46:01,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407d1004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01, skipping insertion in model container [2022-09-20 20:46:01,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:46:00" (1/1) ... [2022-09-20 20:46:01,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:46:01,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:46:01,315 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/28-race_reach_46-escape_racefree.i[30176,30189] [2022-09-20 20:46:01,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:46:01,341 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:46:01,369 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/28-race_reach_46-escape_racefree.i[30176,30189] [2022-09-20 20:46:01,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:46:01,408 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:46:01,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01 WrapperNode [2022-09-20 20:46:01,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:46:01,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:46:01,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:46:01,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:46:01,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,451 INFO L138 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-09-20 20:46:01,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:46:01,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:46:01,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:46:01,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:46:01,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:46:01,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:46:01,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:46:01,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:46:01,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (1/1) ... [2022-09-20 20:46:01,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:46:01,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:46:01,512 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 20:46:01,514 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 20:46:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:46:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:46:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 20:46:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:46:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:46:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-20 20:46:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-20 20:46:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:46:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:46:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:46:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:46:01,546 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 20:46:01,682 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:46:01,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:46:01,883 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:46:01,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:46:01,889 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-09-20 20:46:01,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:46:01 BoogieIcfgContainer [2022-09-20 20:46:01,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:46:01,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:46:01,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:46:01,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:46:01,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:46:00" (1/3) ... [2022-09-20 20:46:01,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9868a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:46:01, skipping insertion in model container [2022-09-20 20:46:01,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:46:01" (2/3) ... [2022-09-20 20:46:01,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9868a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:46:01, skipping insertion in model container [2022-09-20 20:46:01,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:46:01" (3/3) ... [2022-09-20 20:46:01,899 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2022-09-20 20:46:01,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:46:01,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:46:01,912 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:46:01,966 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-20 20:46:02,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 228 flow [2022-09-20 20:46:02,060 INFO L130 PetriNetUnfolder]: 9/109 cut-off events. [2022-09-20 20:46:02,060 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 20:46:02,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 109 events. 9/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 160 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2022-09-20 20:46:02,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 228 flow [2022-09-20 20:46:02,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 99 transitions, 201 flow [2022-09-20 20:46:02,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:46:02,085 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;@2171ff6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:46:02,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-09-20 20:46:02,110 INFO L130 PetriNetUnfolder]: 4/89 cut-off events. [2022-09-20 20:46:02,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:46:02,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:02,111 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] [2022-09-20 20:46:02,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:46:02,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:02,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1929624586, now seen corresponding path program 1 times [2022-09-20 20:46:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:02,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844470472] [2022-09-20 20:46:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:02,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:02,387 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 20:46:02,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:02,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844470472] [2022-09-20 20:46:02,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844470472] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:02,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:02,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 20:46:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910018970] [2022-09-20 20:46:02,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:02,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 20:46:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 20:46:02,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-09-20 20:46:02,417 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 110 [2022-09-20 20:46:02,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:02,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:02,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 110 [2022-09-20 20:46:02,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:02,677 INFO L130 PetriNetUnfolder]: 41/308 cut-off events. [2022-09-20 20:46:02,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:46:02,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 308 events. 41/308 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1416 event pairs, 10 based on Foata normal form. 96/401 useless extension candidates. Maximal degree in co-relation 370. Up to 29 conditions per place. [2022-09-20 20:46:02,680 INFO L137 encePairwiseOnDemand]: 91/110 looper letters, 28 selfloop transitions, 4 changer transitions 38/120 dead transitions. [2022-09-20 20:46:02,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 375 flow [2022-09-20 20:46:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 20:46:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 20:46:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 948 transitions. [2022-09-20 20:46:02,695 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6155844155844156 [2022-09-20 20:46:02,695 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 948 transitions. [2022-09-20 20:46:02,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 948 transitions. [2022-09-20 20:46:02,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:02,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 948 transitions. [2022-09-20 20:46:02,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 67.71428571428571) internal successors, (948), 14 states have internal predecessors, (948), 0 states have call successors, (0), 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 20:46:02,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 0 states have call successors, (0), 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 20:46:02,712 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 0 states have call successors, (0), 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 20:46:02,713 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 201 flow. Second operand 14 states and 948 transitions. [2022-09-20 20:46:02,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 375 flow [2022-09-20 20:46:02,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:46:02,718 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 190 flow [2022-09-20 20:46:02,720 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=190, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2022-09-20 20:46:02,722 INFO L287 CegarLoopForPetriNet]: 94 programPoint places, 18 predicate places. [2022-09-20 20:46:02,722 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 190 flow [2022-09-20 20:46:02,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:02,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:02,723 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] [2022-09-20 20:46:02,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:46:02,726 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:46:02,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1867093068, now seen corresponding path program 1 times [2022-09-20 20:46:02,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:02,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446362176] [2022-09-20 20:46:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:02,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:02,874 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 20:46:02,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:02,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446362176] [2022-09-20 20:46:02,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446362176] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:02,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:02,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:46:02,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626611507] [2022-09-20 20:46:02,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:02,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:46:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:02,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:46:02,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:46:02,878 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-09-20 20:46:02,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 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 20:46:02,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:02,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-09-20 20:46:02,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:02,943 INFO L130 PetriNetUnfolder]: 0/86 cut-off events. [2022-09-20 20:46:02,943 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 20:46:02,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 86 events. 0/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 7/93 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2022-09-20 20:46:02,945 INFO L137 encePairwiseOnDemand]: 105/110 looper letters, 16 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2022-09-20 20:46:02,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 82 transitions, 232 flow [2022-09-20 20:46:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:46:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:46:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2022-09-20 20:46:02,953 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7327272727272728 [2022-09-20 20:46:02,954 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2022-09-20 20:46:02,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2022-09-20 20:46:02,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:02,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2022-09-20 20:46:02,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 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 20:46:02,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 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 20:46:02,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 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 20:46:02,956 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 190 flow. Second operand 5 states and 403 transitions. [2022-09-20 20:46:02,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 82 transitions, 232 flow [2022-09-20 20:46:02,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 82 transitions, 212 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-09-20 20:46:02,961 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 180 flow [2022-09-20 20:46:02,962 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2022-09-20 20:46:02,962 INFO L287 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2022-09-20 20:46:02,962 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 180 flow [2022-09-20 20:46:02,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 0 states have call successors, (0), 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 20:46:02,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:02,963 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] [2022-09-20 20:46:02,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:46:02,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:46:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:02,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1261698595, now seen corresponding path program 1 times [2022-09-20 20:46:02,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:02,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583995204] [2022-09-20 20:46:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:02,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:03,218 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 20:46:03,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:03,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583995204] [2022-09-20 20:46:03,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583995204] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:03,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:03,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-20 20:46:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768074138] [2022-09-20 20:46:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:03,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-20 20:46:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:03,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-20 20:46:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-09-20 20:46:03,222 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2022-09-20 20:46:03,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 180 flow. Second operand has 17 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 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 20:46:03,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:03,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2022-09-20 20:46:03,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:03,740 INFO L130 PetriNetUnfolder]: 0/84 cut-off events. [2022-09-20 20:46:03,740 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 20:46:03,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 84 events. 0/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2022-09-20 20:46:03,741 INFO L137 encePairwiseOnDemand]: 90/110 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-09-20 20:46:03,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 80 transitions, 254 flow [2022-09-20 20:46:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:46:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:46:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1132 transitions. [2022-09-20 20:46:03,743 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.49004329004329006 [2022-09-20 20:46:03,743 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1132 transitions. [2022-09-20 20:46:03,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1132 transitions. [2022-09-20 20:46:03,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:03,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1132 transitions. [2022-09-20 20:46:03,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.904761904761905) internal successors, (1132), 21 states have internal predecessors, (1132), 0 states have call successors, (0), 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 20:46:03,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 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 20:46:03,749 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 0 states have call successors, (0), 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 20:46:03,749 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 180 flow. Second operand 21 states and 1132 transitions. [2022-09-20 20:46:03,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 80 transitions, 254 flow [2022-09-20 20:46:03,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 80 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 20:46:03,751 INFO L231 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2022-09-20 20:46:03,751 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2022-09-20 20:46:03,752 INFO L287 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2022-09-20 20:46:03,752 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2022-09-20 20:46:03,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 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 20:46:03,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-09-20 20:46:03,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-09-20 20:46:03,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:46:03,755 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-20 20:46:03,757 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:46:03,757 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:46:03,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:46:03 BasicIcfg [2022-09-20 20:46:03,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:46:03,761 INFO L158 Benchmark]: Toolchain (without parser) took 2763.96ms. Allocated memory is still 272.6MB. Free memory was 244.9MB in the beginning and 151.6MB in the end (delta: 93.3MB). Peak memory consumption was 93.3MB. Max. memory is 8.0GB. [2022-09-20 20:46:03,762 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 175.1MB. Free memory is still 128.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:46:03,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.03ms. Allocated memory is still 272.6MB. Free memory was 244.3MB in the beginning and 233.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-09-20 20:46:03,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.53ms. Allocated memory is still 272.6MB. Free memory was 233.2MB in the beginning and 231.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 20:46:03,763 INFO L158 Benchmark]: Boogie Preprocessor took 25.62ms. Allocated memory is still 272.6MB. Free memory was 231.1MB in the beginning and 229.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 20:46:03,763 INFO L158 Benchmark]: RCFGBuilder took 412.36ms. Allocated memory is still 272.6MB. Free memory was 229.5MB in the beginning and 215.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-09-20 20:46:03,763 INFO L158 Benchmark]: TraceAbstraction took 1869.51ms. Allocated memory is still 272.6MB. Free memory was 214.8MB in the beginning and 151.6MB in the end (delta: 63.2MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. [2022-09-20 20:46:03,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 175.1MB. Free memory is still 128.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 410.03ms. Allocated memory is still 272.6MB. Free memory was 244.3MB in the beginning and 233.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.53ms. Allocated memory is still 272.6MB. Free memory was 233.2MB in the beginning and 231.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.62ms. Allocated memory is still 272.6MB. Free memory was 231.1MB in the beginning and 229.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 412.36ms. Allocated memory is still 272.6MB. Free memory was 229.5MB in the beginning and 215.9MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1869.51ms. Allocated memory is still 272.6MB. Free memory was 214.8MB in the beginning and 151.6MB in the end (delta: 63.2MB). Peak memory consumption was 64.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 691]: 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, 131 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 355 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 385 IncrementalHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 57 mSDtfsCounter, 385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=0, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 20:46:03,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...