./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:53:06,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:53:06,982 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:53:06,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:53:06,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:53:07,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:53:07,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:53:07,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:53:07,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:53:07,018 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:53:07,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:53:07,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:53:07,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:53:07,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:53:07,020 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:53:07,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:53:07,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:53:07,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:53:07,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:53:07,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:53:07,025 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:53:07,026 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:53:07,026 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:53:07,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:53:07,027 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:53:07,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:53:07,028 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:53:07,031 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:53:07,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:53:07,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:53:07,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:53:07,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:53:07,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:53:07,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:53:07,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:53:07,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:53:07,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:53:07,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:53:07,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:53:07,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:53:07,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:53:07,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:53:07,036 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2024-11-20 17:53:07,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:53:07,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:53:07,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:53:07,313 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:53:07,313 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:53:07,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2024-11-20 17:53:08,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:53:09,045 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:53:09,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2024-11-20 17:53:09,064 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c91c8c54/0a4a786a5b6b4606a5af99b85e947bb3/FLAGdcd177793 [2024-11-20 17:53:09,374 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c91c8c54/0a4a786a5b6b4606a5af99b85e947bb3 [2024-11-20 17:53:09,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:53:09,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:53:09,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:53:09,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:53:09,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:53:09,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:09,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6a08af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09, skipping insertion in model container [2024-11-20 17:53:09,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:09,438 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:53:09,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:53:09,847 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:53:09,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:53:09,926 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:53:09,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09 WrapperNode [2024-11-20 17:53:09,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:53:09,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:53:09,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:53:09,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:53:09,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:09,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:09,971 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2024-11-20 17:53:09,971 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:53:09,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:53:09,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:53:09,972 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:53:09,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:09,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:09,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:10,005 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 17:53:10,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:10,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:10,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:10,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:10,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:10,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:10,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:53:10,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:53:10,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:53:10,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:53:10,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (1/1) ... [2024-11-20 17:53:10,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:53:10,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:53:10,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 17:53:10,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 17:53:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:53:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-20 17:53:10,120 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-20 17:53:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-20 17:53:10,121 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-20 17:53:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:53:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:53:10,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:53:10,123 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:53:10,306 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:53:10,308 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:53:10,468 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:53:10,468 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:53:10,583 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:53:10,583 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:53:10,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:10 BoogieIcfgContainer [2024-11-20 17:53:10,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:53:10,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:53:10,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:53:10,589 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:53:10,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:53:09" (1/3) ... [2024-11-20 17:53:10,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78163b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:10, skipping insertion in model container [2024-11-20 17:53:10,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09" (2/3) ... [2024-11-20 17:53:10,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78163b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:10, skipping insertion in model container [2024-11-20 17:53:10,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:10" (3/3) ... [2024-11-20 17:53:10,593 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2024-11-20 17:53:10,610 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:53:10,611 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:53:10,611 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:53:10,654 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 17:53:10,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2024-11-20 17:53:10,718 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-11-20 17:53:10,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:53:10,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2024-11-20 17:53:10,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2024-11-20 17:53:10,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2024-11-20 17:53:10,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:53:10,748 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3034638d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:53:10,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 17:53:10,761 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:53:10,765 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-20 17:53:10,765 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:53:10,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:10,766 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:10,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:53:10,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:10,772 INFO L85 PathProgramCache]: Analyzing trace with hash 964763989, now seen corresponding path program 1 times [2024-11-20 17:53:10,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:10,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883058809] [2024-11-20 17:53:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:10,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:10,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:10,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883058809] [2024-11-20 17:53:10,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883058809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:10,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:10,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:53:10,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346286409] [2024-11-20 17:53:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:11,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:53:11,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:53:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:53:11,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-20 17:53:11,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 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) [2024-11-20 17:53:11,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:11,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-20 17:53:11,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:11,116 INFO L124 PetriNetUnfolderBase]: 80/193 cut-off events. [2024-11-20 17:53:11,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:53:11,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 193 events. 80/193 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 796 event pairs, 68 based on Foata normal form. 24/196 useless extension candidates. Maximal degree in co-relation 281. Up to 155 conditions per place. [2024-11-20 17:53:11,120 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 13 selfloop transitions, 1 changer transitions 1/22 dead transitions. [2024-11-20 17:53:11,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 81 flow [2024-11-20 17:53:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:53:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:53:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-20 17:53:11,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-20 17:53:11,131 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 42 transitions. [2024-11-20 17:53:11,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 81 flow [2024-11-20 17:53:11,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:53:11,135 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 50 flow [2024-11-20 17:53:11,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2024-11-20 17:53:11,141 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2024-11-20 17:53:11,141 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 50 flow [2024-11-20 17:53:11,141 INFO L472 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) [2024-11-20 17:53:11,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:11,142 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:11,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:53:11,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:53:11,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash -158079315, now seen corresponding path program 1 times [2024-11-20 17:53:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:11,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832257855] [2024-11-20 17:53:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:11,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:11,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 17:53:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:11,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 17:53:11,226 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 17:53:11,228 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-20 17:53:11,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-20 17:53:11,232 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-20 17:53:11,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-20 17:53:11,233 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-20 17:53:11,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:53:11,233 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 17:53:11,236 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 17:53:11,237 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 17:53:11,266 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 17:53:11,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 106 flow [2024-11-20 17:53:11,286 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2024-11-20 17:53:11,289 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:53:11,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2024-11-20 17:53:11,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 106 flow [2024-11-20 17:53:11,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 73 flow [2024-11-20 17:53:11,292 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:53:11,294 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3034638d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:53:11,295 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-20 17:53:11,302 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:53:11,303 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-20 17:53:11,303 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 17:53:11,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:11,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:11,303 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-20 17:53:11,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1744819631, now seen corresponding path program 1 times [2024-11-20 17:53:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317864132] [2024-11-20 17:53:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:11,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317864132] [2024-11-20 17:53:11,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317864132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:11,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:11,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:53:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19537829] [2024-11-20 17:53:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:11,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:53:11,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:11,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:53:11,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:53:11,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-20 17:53:11,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-20 17:53:11,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:11,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-20 17:53:11,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:11,558 INFO L124 PetriNetUnfolderBase]: 401/777 cut-off events. [2024-11-20 17:53:11,559 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-20 17:53:11,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 777 events. 401/777 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4032 event pairs, 362 based on Foata normal form. 69/792 useless extension candidates. Maximal degree in co-relation 399. Up to 647 conditions per place. [2024-11-20 17:53:11,568 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 16 selfloop transitions, 1 changer transitions 1/26 dead transitions. [2024-11-20 17:53:11,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 101 flow [2024-11-20 17:53:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:53:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:53:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-20 17:53:11,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-11-20 17:53:11,573 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 73 flow. Second operand 3 states and 57 transitions. [2024-11-20 17:53:11,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 101 flow [2024-11-20 17:53:11,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:53:11,575 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 64 flow [2024-11-20 17:53:11,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2024-11-20 17:53:11,578 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-20 17:53:11,578 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 64 flow [2024-11-20 17:53:11,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-20 17:53:11,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:11,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:11,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:53:11,579 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-20 17:53:11,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2060236629, now seen corresponding path program 1 times [2024-11-20 17:53:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906584816] [2024-11-20 17:53:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:11,614 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 17:53:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:11,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 17:53:11,639 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 17:53:11,640 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-20 17:53:11,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-20 17:53:11,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-20 17:53:11,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-20 17:53:11,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-20 17:53:11,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-20 17:53:11,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:53:11,642 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 17:53:11,668 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-11-20 17:53:11,669 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:53:11,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:53:11 BasicIcfg [2024-11-20 17:53:11,676 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:53:11,677 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:53:11,677 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:53:11,677 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:53:11,678 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:10" (3/4) ... [2024-11-20 17:53:11,680 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 17:53:11,681 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:53:11,683 INFO L158 Benchmark]: Toolchain (without parser) took 2303.33ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 95.6MB in the beginning and 154.9MB in the end (delta: -59.3MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2024-11-20 17:53:11,684 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory was 111.3MB in the beginning and 111.1MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:53:11,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 548.14ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 72.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:11,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.60ms. Allocated memory is still 151.0MB. Free memory was 72.2MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:11,686 INFO L158 Benchmark]: Boogie Preprocessor took 55.44ms. Allocated memory is still 151.0MB. Free memory was 70.1MB in the beginning and 67.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:11,688 INFO L158 Benchmark]: RCFGBuilder took 555.23ms. Allocated memory is still 151.0MB. Free memory was 67.9MB in the beginning and 104.1MB in the end (delta: -36.1MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:11,688 INFO L158 Benchmark]: TraceAbstraction took 1091.18ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 104.1MB in the beginning and 154.9MB in the end (delta: -50.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2024-11-20 17:53:11,688 INFO L158 Benchmark]: Witness Printer took 3.76ms. Allocated memory is still 216.0MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:53:11,690 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 151.0MB. Free memory was 111.3MB in the beginning and 111.1MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 548.14ms. Allocated memory is still 151.0MB. Free memory was 95.2MB in the beginning and 72.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.60ms. Allocated memory is still 151.0MB. Free memory was 72.2MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.44ms. Allocated memory is still 151.0MB. Free memory was 70.1MB in the beginning and 67.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 555.23ms. Allocated memory is still 151.0MB. Free memory was 67.9MB in the beginning and 104.1MB in the end (delta: -36.1MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1091.18ms. Allocated memory was 151.0MB in the beginning and 216.0MB in the end (delta: 65.0MB). Free memory was 104.1MB in the beginning and 154.9MB in the end (delta: -50.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 3.76ms. Allocated memory is still 216.0MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L770] 0 _N = __VERIFIER_nondet_int() [L771] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L750] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L772] 0 limit = _N VAL [_N=0, limit=0] [L773] 0 int i = 0; VAL [_N=0, i=0, limit=0] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [_N=0, limit=0, t=-1] [L763] 1 int i, bound; [L764] 1 bound = limit [L765] 1 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, limit=0] [L765] COND FALSE 1 !(i < bound) [L766] CALL 1 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 1 !expression [L753] CALL 1 reach_error() [L752] COND FALSE 1 !(0) VAL [_N=0, limit=0] [L752] 1 __assert_fail ("0", "generated/unwind3.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 5 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: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 52 locations, 6 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces [2024-11-20 17:53:11,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:53:13,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:53:13,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-20 17:53:13,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:53:13,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:53:13,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:53:13,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:53:13,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:53:13,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:53:13,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:53:13,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:53:13,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:53:13,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:53:13,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:53:13,994 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:53:13,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:53:13,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:53:13,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:53:13,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:53:13,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:53:13,998 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:53:13,998 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:53:13,998 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:53:14,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:53:14,000 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:53:14,001 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-20 17:53:14,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:53:14,001 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-20 17:53:14,001 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:53:14,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:53:14,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:53:14,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:53:14,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:53:14,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:53:14,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:53:14,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:53:14,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:53:14,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:53:14,004 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-20 17:53:14,004 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-20 17:53:14,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:53:14,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:53:14,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:53:14,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:53:14,006 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2024-11-20 17:53:14,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:53:14,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:53:14,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:53:14,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:53:14,328 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:53:14,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2024-11-20 17:53:15,872 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:53:16,146 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:53:16,147 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2024-11-20 17:53:16,165 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b936460f/d3e27e8ba04e4ba3bcdfb84e9e64b2a9/FLAG591eeddd7 [2024-11-20 17:53:16,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b936460f/d3e27e8ba04e4ba3bcdfb84e9e64b2a9 [2024-11-20 17:53:16,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:53:16,184 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:53:16,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:53:16,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:53:16,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:53:16,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51819298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16, skipping insertion in model container [2024-11-20 17:53:16,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:53:16,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:53:16,614 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:53:16,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:53:16,733 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:53:16,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16 WrapperNode [2024-11-20 17:53:16,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:53:16,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:53:16,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:53:16,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:53:16,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,762 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,784 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2024-11-20 17:53:16,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:53:16,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:53:16,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:53:16,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:53:16,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,827 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 17:53:16,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:53:16,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:53:16,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:53:16,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:53:16,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (1/1) ... [2024-11-20 17:53:16,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:53:16,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:53:16,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 17:53:16,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 17:53:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:53:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-20 17:53:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-20 17:53:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-20 17:53:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-20 17:53:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-20 17:53:16,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:53:16,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:53:16,956 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:53:17,124 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:53:17,126 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:53:17,303 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:53:17,303 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:53:17,436 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:53:17,436 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:53:17,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:17 BoogieIcfgContainer [2024-11-20 17:53:17,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:53:17,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:53:17,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:53:17,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:53:17,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:53:16" (1/3) ... [2024-11-20 17:53:17,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee1d5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:17, skipping insertion in model container [2024-11-20 17:53:17,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:16" (2/3) ... [2024-11-20 17:53:17,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee1d5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:17, skipping insertion in model container [2024-11-20 17:53:17,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:17" (3/3) ... [2024-11-20 17:53:17,447 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2024-11-20 17:53:17,462 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:53:17,462 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:53:17,463 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:53:17,530 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 17:53:17,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2024-11-20 17:53:17,599 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2024-11-20 17:53:17,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:53:17,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2024-11-20 17:53:17,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2024-11-20 17:53:17,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2024-11-20 17:53:17,618 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:53:17,624 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@64eebfa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:53:17,625 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 17:53:17,633 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:53:17,633 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-20 17:53:17,633 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:53:17,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:17,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:17,635 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:53:17,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:17,640 INFO L85 PathProgramCache]: Analyzing trace with hash 964763989, now seen corresponding path program 1 times [2024-11-20 17:53:17,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:17,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597769679] [2024-11-20 17:53:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:17,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:17,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:17,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:17,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-20 17:53:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:17,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 17:53:17,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:17,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:53:17,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:17,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597769679] [2024-11-20 17:53:17,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597769679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:17,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:17,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:53:17,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779736548] [2024-11-20 17:53:17,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:17,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:53:17,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:17,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:53:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:53:17,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-11-20 17:53:17,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 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) [2024-11-20 17:53:17,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:17,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-11-20 17:53:17,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:17,922 INFO L124 PetriNetUnfolderBase]: 80/193 cut-off events. [2024-11-20 17:53:17,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:53:17,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 193 events. 80/193 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 796 event pairs, 68 based on Foata normal form. 24/196 useless extension candidates. Maximal degree in co-relation 281. Up to 155 conditions per place. [2024-11-20 17:53:17,929 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 13 selfloop transitions, 1 changer transitions 1/22 dead transitions. [2024-11-20 17:53:17,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 81 flow [2024-11-20 17:53:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:53:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:53:17,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-20 17:53:17,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-20 17:53:17,943 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 42 transitions. [2024-11-20 17:53:17,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 81 flow [2024-11-20 17:53:17,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:53:17,948 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 50 flow [2024-11-20 17:53:17,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2024-11-20 17:53:17,953 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2024-11-20 17:53:17,953 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 50 flow [2024-11-20 17:53:17,954 INFO L472 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) [2024-11-20 17:53:17,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:17,954 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:17,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-20 17:53:18,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:18,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 17:53:18,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash -158079315, now seen corresponding path program 1 times [2024-11-20 17:53:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:18,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755004590] [2024-11-20 17:53:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:18,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:18,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:18,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-20 17:53:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:18,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 17:53:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:18,311 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-20 17:53:18,312 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 17:53:18,313 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-20 17:53:18,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-20 17:53:18,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-20 17:53:18,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-20 17:53:18,315 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-20 17:53:18,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-20 17:53:18,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:18,517 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 17:53:18,520 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 17:53:18,521 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 17:53:18,555 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 17:53:18,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 106 flow [2024-11-20 17:53:18,572 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2024-11-20 17:53:18,574 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:53:18,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 188 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2024-11-20 17:53:18,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 106 flow [2024-11-20 17:53:18,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 73 flow [2024-11-20 17:53:18,578 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:53:18,580 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@64eebfa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:53:18,580 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-20 17:53:18,589 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:53:18,590 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2024-11-20 17:53:18,590 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 17:53:18,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:18,590 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:18,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-20 17:53:18,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1744819631, now seen corresponding path program 1 times [2024-11-20 17:53:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:18,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592614550] [2024-11-20 17:53:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:18,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:18,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:18,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:18,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-20 17:53:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:18,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 17:53:18,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:18,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:53:18,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:18,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592614550] [2024-11-20 17:53:18,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592614550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:18,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:18,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:53:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654245880] [2024-11-20 17:53:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:18,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:53:18,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:18,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:53:18,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:53:18,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-20 17:53:18,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-20 17:53:18,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:18,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-20 17:53:18,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:18,803 INFO L124 PetriNetUnfolderBase]: 401/777 cut-off events. [2024-11-20 17:53:18,804 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-20 17:53:18,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 777 events. 401/777 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4032 event pairs, 362 based on Foata normal form. 69/792 useless extension candidates. Maximal degree in co-relation 399. Up to 647 conditions per place. [2024-11-20 17:53:18,809 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 16 selfloop transitions, 1 changer transitions 1/26 dead transitions. [2024-11-20 17:53:18,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 101 flow [2024-11-20 17:53:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:53:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:53:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-20 17:53:18,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-11-20 17:53:18,814 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 73 flow. Second operand 3 states and 57 transitions. [2024-11-20 17:53:18,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 101 flow [2024-11-20 17:53:18,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:53:18,816 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 64 flow [2024-11-20 17:53:18,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2024-11-20 17:53:18,817 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-20 17:53:18,818 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 64 flow [2024-11-20 17:53:18,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-20 17:53:18,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:18,818 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:18,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-20 17:53:19,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:19,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-20 17:53:19,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2060236629, now seen corresponding path program 1 times [2024-11-20 17:53:19,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:19,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081674419] [2024-11-20 17:53:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:19,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:19,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:19,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:19,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-20 17:53:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:19,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 17:53:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:19,114 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-20 17:53:19,114 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 17:53:19,114 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-20 17:53:19,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-20 17:53:19,116 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-20 17:53:19,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-20 17:53:19,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-20 17:53:19,117 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-20 17:53:19,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-20 17:53:19,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:19,318 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 17:53:19,342 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-11-20 17:53:19,342 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:53:19,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:53:19 BasicIcfg [2024-11-20 17:53:19,354 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:53:19,354 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:53:19,355 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:53:19,355 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:53:19,356 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:17" (3/4) ... [2024-11-20 17:53:19,358 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 17:53:19,359 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:53:19,360 INFO L158 Benchmark]: Toolchain (without parser) took 3175.46ms. Allocated memory was 56.6MB in the beginning and 88.1MB in the end (delta: 31.5MB). Free memory was 25.8MB in the beginning and 42.5MB in the end (delta: -16.8MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,360 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 44.0MB. Free memory is still 20.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:53:19,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.72ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 25.5MB in the beginning and 45.2MB in the end (delta: -19.6MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.92ms. Allocated memory is still 73.4MB. Free memory was 45.2MB in the beginning and 43.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,361 INFO L158 Benchmark]: Boogie Preprocessor took 72.98ms. Allocated memory is still 73.4MB. Free memory was 43.0MB in the beginning and 40.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,362 INFO L158 Benchmark]: RCFGBuilder took 577.63ms. Allocated memory is still 73.4MB. Free memory was 40.7MB in the beginning and 35.2MB in the end (delta: 5.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,362 INFO L158 Benchmark]: TraceAbstraction took 1915.60ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 34.5MB in the beginning and 43.1MB in the end (delta: -8.6MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,362 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 88.1MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:53:19,364 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 44.0MB. Free memory is still 20.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 546.72ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 25.5MB in the beginning and 45.2MB in the end (delta: -19.6MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.92ms. Allocated memory is still 73.4MB. Free memory was 45.2MB in the beginning and 43.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.98ms. Allocated memory is still 73.4MB. Free memory was 43.0MB in the beginning and 40.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 577.63ms. Allocated memory is still 73.4MB. Free memory was 40.7MB in the beginning and 35.2MB in the end (delta: 5.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1915.60ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 34.5MB in the beginning and 43.1MB in the end (delta: -8.6MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 88.1MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L770] 0 _N = __VERIFIER_nondet_int() [L771] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L750] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L772] 0 limit = _N VAL [_N=0, limit=0] [L773] 0 int i = 0; VAL [_N=0, i=0, limit=0] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [_N=0, limit=0, t=0] [L763] 1 int i, bound; [L764] 1 bound = limit [L765] 1 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, limit=0] [L765] COND FALSE 1 !(i < bound) [L766] CALL 1 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 1 !expression [L753] CALL 1 reach_error() [L752] COND FALSE 1 !(0) VAL [_N=0, limit=0] [L752] 1 __assert_fail ("0", "generated/unwind3.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 5 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: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 52 locations, 6 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces [2024-11-20 17:53:19,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample