/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 01:16:05,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 01:16:05,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 01:16:05,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-12-13 01:16:05,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 01:16:05,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 01:16:05,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 01:16:05,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 01:16:05,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 01:16:05,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 01:16:05,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 01:16:05,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 01:16:05,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 01:16:05,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 01:16:05,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 01:16:05,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 01:16:05,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-13 01:16:05,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 01:16:05,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 01:16:05,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 01:16:05,444 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-RepeatedSemanticLbe.epf [2022-12-13 01:16:05,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 01:16:05,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 01:16:05,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 01:16:05,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 01:16:05,471 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 01:16:05,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 01:16:05,471 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 01:16:05,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 01:16:05,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 01:16:05,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 01:16:05,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 01:16:05,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 01:16:05,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 01:16:05,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 01:16:05,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 01:16:05,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 01:16:05,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 01:16:05,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 01:16:05,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 01:16:05,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 01:16:05,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 01:16:05,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 01:16:05,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 01:16:05,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 01:16:05,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 01:16:05,734 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 01:16:05,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2022-12-13 01:16:06,654 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 01:16:06,911 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 01:16:06,912 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2022-12-13 01:16:06,927 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3fbb9a40/d90c2f22549c4f8991960ff4d09c9ae3/FLAG9fdd76b44 [2022-12-13 01:16:06,947 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3fbb9a40/d90c2f22549c4f8991960ff4d09c9ae3 [2022-12-13 01:16:06,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 01:16:06,950 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 01:16:06,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 01:16:06,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 01:16:06,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 01:16:06,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:16:06" (1/1) ... [2022-12-13 01:16:06,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0a7d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:06, skipping insertion in model container [2022-12-13 01:16:06,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:16:06" (1/1) ... [2022-12-13 01:16:06,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 01:16:07,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 01:16:07,282 WARN L237 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_45-escape_racing.i[30176,30189] [2022-12-13 01:16:07,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 01:16:07,306 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 01:16:07,335 WARN L237 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_45-escape_racing.i[30176,30189] [2022-12-13 01:16:07,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 01:16:07,375 INFO L208 MainTranslator]: Completed translation [2022-12-13 01:16:07,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07 WrapperNode [2022-12-13 01:16:07,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 01:16:07,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 01:16:07,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 01:16:07,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 01:16:07,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,409 INFO L138 Inliner]: procedures = 170, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-12-13 01:16:07,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 01:16:07,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 01:16:07,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 01:16:07,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 01:16:07,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 01:16:07,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 01:16:07,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 01:16:07,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 01:16:07,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 01:16:07,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 01:16:07,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 01:16:07,470 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) [2022-12-13 01:16:07,477 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 [2022-12-13 01:16:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 01:16:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 01:16:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 01:16:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 01:16:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 01:16:07,497 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 01:16:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 01:16:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 01:16:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 01:16:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 01:16:07,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 01:16:07,499 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 01:16:07,607 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 01:16:07,608 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 01:16:07,852 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 01:16:07,856 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 01:16:07,857 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 01:16:07,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:07 BoogieIcfgContainer [2022-12-13 01:16:07,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 01:16:07,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 01:16:07,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 01:16:07,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 01:16:07,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:16:06" (1/3) ... [2022-12-13 01:16:07,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3074bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:16:07, skipping insertion in model container [2022-12-13 01:16:07,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (2/3) ... [2022-12-13 01:16:07,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3074bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:16:07, skipping insertion in model container [2022-12-13 01:16:07,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:07" (3/3) ... [2022-12-13 01:16:07,865 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_45-escape_racing.i [2022-12-13 01:16:07,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 01:16:07,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 01:16:07,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 01:16:07,945 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 01:16:07,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 102 transitions, 212 flow [2022-12-13 01:16:08,028 INFO L130 PetriNetUnfolder]: 9/101 cut-off events. [2022-12-13 01:16:08,029 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 01:16:08,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 9/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 149 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2022-12-13 01:16:08,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 102 transitions, 212 flow [2022-12-13 01:16:08,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 92 transitions, 187 flow [2022-12-13 01:16:08,041 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:16:08,057 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 92 transitions, 187 flow [2022-12-13 01:16:08,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 92 transitions, 187 flow [2022-12-13 01:16:08,089 INFO L130 PetriNetUnfolder]: 9/92 cut-off events. [2022-12-13 01:16:08,090 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:16:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 92 events. 9/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2022-12-13 01:16:08,094 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 92 transitions, 187 flow [2022-12-13 01:16:08,094 INFO L226 LiptonReduction]: Number of co-enabled transitions 1452 [2022-12-13 01:16:11,815 INFO L241 LiptonReduction]: Total number of compositions: 71 [2022-12-13 01:16:11,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 01:16:11,847 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=REPEATED_LIPTON_PN, 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;@32414216, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 01:16:11,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 01:16:11,876 INFO L130 PetriNetUnfolder]: 4/24 cut-off events. [2022-12-13 01:16:11,876 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:16:11,876 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:16:11,877 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 01:16:11,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:16:11,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:16:11,880 INFO L85 PathProgramCache]: Analyzing trace with hash 369542158, now seen corresponding path program 1 times [2022-12-13 01:16:11,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:16:11,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243730634] [2022-12-13 01:16:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:16:11,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:16:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:16:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 01:16:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:16:12,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243730634] [2022-12-13 01:16:12,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243730634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:16:12,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:16:12,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 01:16:12,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035307997] [2022-12-13 01:16:12,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:16:12,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 01:16:12,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:16:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 01:16:12,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 01:16:12,301 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2022-12-13 01:16:12,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 45 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:16:12,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:16:12,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2022-12-13 01:16:12,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:16:12,423 INFO L130 PetriNetUnfolder]: 130/363 cut-off events. [2022-12-13 01:16:12,423 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:16:12,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 363 events. 130/363 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1996 event pairs, 41 based on Foata normal form. 16/266 useless extension candidates. Maximal degree in co-relation 672. Up to 175 conditions per place. [2022-12-13 01:16:12,427 INFO L137 encePairwiseOnDemand]: 27/45 looper letters, 19 selfloop transitions, 4 changer transitions 24/52 dead transitions. [2022-12-13 01:16:12,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 195 flow [2022-12-13 01:16:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 01:16:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 01:16:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-12-13 01:16:12,439 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2022-12-13 01:16:12,441 INFO L175 Difference]: Start difference. First operand has 40 places, 45 transitions, 93 flow. Second operand 3 states and 84 transitions. [2022-12-13 01:16:12,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 195 flow [2022-12-13 01:16:12,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 01:16:12,447 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 74 flow [2022-12-13 01:16:12,448 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2022-12-13 01:16:12,452 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2022-12-13 01:16:12,452 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:16:12,453 INFO L89 Accepts]: Start accepts. Operand has 42 places, 26 transitions, 74 flow [2022-12-13 01:16:12,455 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:16:12,455 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:16:12,455 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 26 transitions, 74 flow [2022-12-13 01:16:12,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 26 transitions, 74 flow [2022-12-13 01:16:12,465 INFO L130 PetriNetUnfolder]: 3/34 cut-off events. [2022-12-13 01:16:12,465 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:16:12,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 34 events. 3/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 3 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 50. Up to 16 conditions per place. [2022-12-13 01:16:12,468 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 26 transitions, 74 flow [2022-12-13 01:16:12,468 INFO L226 LiptonReduction]: Number of co-enabled transitions 108 [2022-12-13 01:16:12,958 INFO L241 LiptonReduction]: Total number of compositions: 6 [2022-12-13 01:16:12,959 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 507 [2022-12-13 01:16:12,960 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 64 flow [2022-12-13 01:16:12,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:16:12,960 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:16:12,960 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 01:16:12,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 01:16:12,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:16:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:16:12,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1429093509, now seen corresponding path program 1 times [2022-12-13 01:16:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:16:12,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884239729] [2022-12-13 01:16:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:16:12,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:16:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 01:16:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 01:16:13,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 01:16:13,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884239729] [2022-12-13 01:16:13,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884239729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 01:16:13,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 01:16:13,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 01:16:13,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233545840] [2022-12-13 01:16:13,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 01:16:13,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 01:16:13,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 01:16:13,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 01:16:13,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 01:16:13,204 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-13 01:16:13,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:16:13,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 01:16:13,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-13 01:16:13,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 01:16:13,270 INFO L130 PetriNetUnfolder]: 22/72 cut-off events. [2022-12-13 01:16:13,270 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 01:16:13,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 72 events. 22/72 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 236 event pairs, 7 based on Foata normal form. 12/58 useless extension candidates. Maximal degree in co-relation 165. Up to 48 conditions per place. [2022-12-13 01:16:13,271 INFO L137 encePairwiseOnDemand]: 9/21 looper letters, 10 selfloop transitions, 8 changer transitions 7/25 dead transitions. [2022-12-13 01:16:13,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 122 flow [2022-12-13 01:16:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 01:16:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 01:16:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 32 transitions. [2022-12-13 01:16:13,273 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2022-12-13 01:16:13,273 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 64 flow. Second operand 4 states and 32 transitions. [2022-12-13 01:16:13,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 122 flow [2022-12-13 01:16:13,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 01:16:13,274 INFO L231 Difference]: Finished difference. Result has 28 places, 14 transitions, 52 flow [2022-12-13 01:16:13,274 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=14} [2022-12-13 01:16:13,275 INFO L295 CegarLoopForPetriNet]: 40 programPoint places, -12 predicate places. [2022-12-13 01:16:13,275 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 01:16:13,275 INFO L89 Accepts]: Start accepts. Operand has 28 places, 14 transitions, 52 flow [2022-12-13 01:16:13,275 INFO L95 Accepts]: Finished accepts. [2022-12-13 01:16:13,275 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 01:16:13,275 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 14 transitions, 52 flow [2022-12-13 01:16:13,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 14 transitions, 52 flow [2022-12-13 01:16:13,278 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2022-12-13 01:16:13,279 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 01:16:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 21 events. 0/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 42 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-12-13 01:16:13,279 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 14 transitions, 52 flow [2022-12-13 01:16:13,279 INFO L226 LiptonReduction]: Number of co-enabled transitions 30 [2022-12-13 01:16:13,689 INFO L241 LiptonReduction]: Total number of compositions: 4 [2022-12-13 01:16:13,690 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 415 [2022-12-13 01:16:13,690 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 43 flow [2022-12-13 01:16:13,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 01:16:13,691 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 01:16:13,691 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 01:16:13,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 01:16:13,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 01:16:13,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 01:16:13,691 INFO L85 PathProgramCache]: Analyzing trace with hash 369545460, now seen corresponding path program 1 times [2022-12-13 01:16:13,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 01:16:13,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238559911] [2022-12-13 01:16:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 01:16:13,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 01:16:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 01:16:13,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 01:16:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 01:16:13,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 01:16:13,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 01:16:13,720 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-13 01:16:13,721 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-13 01:16:13,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 01:16:13,722 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 01:16:13,725 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 01:16:13,725 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 01:16:13,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:16:13 BasicIcfg [2022-12-13 01:16:13,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 01:16:13,740 INFO L158 Benchmark]: Toolchain (without parser) took 6789.34ms. Allocated memory was 173.0MB in the beginning and 249.6MB in the end (delta: 76.5MB). Free memory was 147.3MB in the beginning and 142.4MB in the end (delta: 4.9MB). Peak memory consumption was 82.7MB. Max. memory is 8.0GB. [2022-12-13 01:16:13,740 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory was 149.0MB in the beginning and 148.9MB in the end (delta: 87.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 01:16:13,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.50ms. Allocated memory is still 173.0MB. Free memory was 147.3MB in the beginning and 127.6MB in the end (delta: 19.7MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-13 01:16:13,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.10ms. Allocated memory is still 173.0MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 01:16:13,741 INFO L158 Benchmark]: Boogie Preprocessor took 20.42ms. Allocated memory is still 173.0MB. Free memory was 125.5MB in the beginning and 124.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 01:16:13,741 INFO L158 Benchmark]: RCFGBuilder took 427.87ms. Allocated memory is still 173.0MB. Free memory was 124.0MB in the beginning and 109.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-13 01:16:13,741 INFO L158 Benchmark]: TraceAbstraction took 5879.37ms. Allocated memory was 173.0MB in the beginning and 249.6MB in the end (delta: 76.5MB). Free memory was 108.2MB in the beginning and 142.4MB in the end (delta: -34.2MB). Peak memory consumption was 43.9MB. Max. memory is 8.0GB. [2022-12-13 01:16:13,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory was 149.0MB in the beginning and 148.9MB in the end (delta: 87.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 423.50ms. Allocated memory is still 173.0MB. Free memory was 147.3MB in the beginning and 127.6MB in the end (delta: 19.7MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.10ms. Allocated memory is still 173.0MB. Free memory was 127.6MB in the beginning and 125.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.42ms. Allocated memory is still 173.0MB. Free memory was 125.5MB in the beginning and 124.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 427.87ms. Allocated memory is still 173.0MB. Free memory was 124.0MB in the beginning and 109.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5879.37ms. Allocated memory was 173.0MB in the beginning and 249.6MB in the end (delta: 76.5MB). Free memory was 108.2MB in the beginning and 142.4MB in the end (delta: -34.2MB). Peak memory consumption was 43.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 87 PlacesBefore, 40 PlacesAfterwards, 92 TransitionsBefore, 45 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 29 ConcurrentYvCompositions, 0 ChoiceCompositions, 71 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1942, independent: 1827, independent conditional: 1827, independent unconditional: 0, dependent: 115, dependent conditional: 115, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1942, independent: 1827, independent conditional: 0, independent unconditional: 1827, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1942, independent: 1827, independent conditional: 0, independent unconditional: 1827, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1942, independent: 1827, independent conditional: 0, independent unconditional: 1827, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1257, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1257, independent: 1136, independent conditional: 0, independent unconditional: 1136, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 121, independent: 77, independent conditional: 0, independent unconditional: 77, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 149, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1942, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 1257, unknown conditional: 0, unknown unconditional: 1257] , Statistics on independence cache: Total cache size (in pairs): 1934, Positive cache size: 1890, Positive conditional cache size: 0, Positive unconditional cache size: 1890, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 32 PlacesBefore, 27 PlacesAfterwards, 26 TransitionsBefore, 21 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 125, independent: 83, independent conditional: 83, independent unconditional: 0, dependent: 42, dependent conditional: 42, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 125, independent: 83, independent conditional: 9, independent unconditional: 74, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 125, independent: 83, independent conditional: 9, independent unconditional: 74, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 125, independent: 83, independent conditional: 9, independent unconditional: 74, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 62, independent: 47, independent conditional: 9, independent unconditional: 38, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 62, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, independent: 19, independent conditional: 3, independent unconditional: 16, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 46, independent: 24, independent conditional: 5, independent unconditional: 19, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 125, independent: 36, independent conditional: 0, independent unconditional: 36, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 62, unknown conditional: 9, unknown unconditional: 53] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 51, Positive conditional cache size: 9, Positive unconditional cache size: 42, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 21 PlacesBefore, 18 PlacesAfterwards, 14 TransitionsBefore, 11 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, independent: 20, independent conditional: 20, independent unconditional: 0, dependent: 9, dependent conditional: 9, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 29, independent: 20, independent conditional: 20, independent unconditional: 0, dependent: 9, dependent conditional: 1, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 29, independent: 20, independent conditional: 20, independent unconditional: 0, dependent: 9, dependent conditional: 1, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 29, independent: 20, independent conditional: 20, independent unconditional: 0, dependent: 9, dependent conditional: 1, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 16, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 32, independent: 30, independent conditional: 30, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29, independent: 5, independent conditional: 5, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 16, unknown conditional: 16, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 87, Positive cache size: 71, Positive conditional cache size: 24, Positive unconditional cache size: 47, Negative cache size: 16, Negative conditional cache size: 1, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - CounterExampleResult [Line: 691]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t id; [L708] 0 int i = 0; [L709] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={7:0}, i={7:0}, id={6:0}, mutex1={4:0}, mutex2={5:0}, pthread_create(&id, ((void *)0), t_fun, (void *) &i)=-1] [L700] 1 int *p = (int *) arg; [L702] EXPR 1 \read(*p) [L702] 1 (*p)++ [L711] EXPR 0 \read(i) [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={7:0}, arg={7:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={7:0}] - UnprovableResult [Line: 709]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 123 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: 5.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 1 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 0.4s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 01:16:13,773 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...