./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread/lazy01.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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:45:13,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:45:13,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:45:13,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:45:13,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:45:13,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:45:13,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:45:13,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:45:13,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:45:13,753 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:45:13,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:45:13,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:45:13,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:45:13,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:45:13,757 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:45:13,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:45:13,758 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:45:13,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:45:13,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:45:13,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:45:13,759 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:45:13,762 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:45:13,763 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:45:13,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:45:13,763 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:45:13,763 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:45:13,763 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:45:13,764 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:45:13,764 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:45:13,764 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:45:13,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:45:13,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:45:13,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:45:13,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:45:13,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:45:13,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:45:13,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:45:13,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:45:13,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:45:13,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:45:13,767 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:45:13,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:45:13,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2024-11-10 17:45:14,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:45:14,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:45:14,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:45:14,039 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:45:14,040 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:45:14,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/lazy01.i [2024-11-10 17:45:15,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:45:15,668 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:45:15,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2024-11-10 17:45:15,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f6ed7a0/0e1793fd616b48519f9f13f437e027e1/FLAGb3040d832 [2024-11-10 17:45:15,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36f6ed7a0/0e1793fd616b48519f9f13f437e027e1 [2024-11-10 17:45:15,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:45:15,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:45:15,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:45:15,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:45:15,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:45:15,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:45:15" (1/1) ... [2024-11-10 17:45:15,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1b6737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:15, skipping insertion in model container [2024-11-10 17:45:15,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:45:15" (1/1) ... [2024-11-10 17:45:15,756 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:45:16,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:45:16,161 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:45:16,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:45:16,261 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:45:16,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16 WrapperNode [2024-11-10 17:45:16,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:45:16,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:45:16,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:45:16,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:45:16,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,309 INFO L138 Inliner]: procedures = 169, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-11-10 17:45:16,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:45:16,313 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:45:16,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:45:16,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:45:16,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,338 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-10 17:45:16,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,346 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:45:16,360 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:45:16,360 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:45:16,360 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:45:16,362 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (1/1) ... [2024-11-10 17:45:16,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:45:16,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:16,392 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) [2024-11-10 17:45:16,394 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 [2024-11-10 17:45:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 17:45:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 17:45:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 17:45:16,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 17:45:16,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 17:45:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 17:45:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 17:45:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:45:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:45:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:45:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 17:45:16,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:45:16,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:45:16,434 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:45:16,548 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:45:16,550 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:45:16,698 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:45:16,699 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:45:16,793 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:45:16,794 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:45:16,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:16 BoogieIcfgContainer [2024-11-10 17:45:16,794 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:45:16,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:45:16,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:45:16,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:45:16,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:45:15" (1/3) ... [2024-11-10 17:45:16,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc744fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:45:16, skipping insertion in model container [2024-11-10 17:45:16,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:16" (2/3) ... [2024-11-10 17:45:16,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc744fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:45:16, skipping insertion in model container [2024-11-10 17:45:16,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:16" (3/3) ... [2024-11-10 17:45:16,802 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-11-10 17:45:16,815 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:45:16,815 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 17:45:16,816 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:45:16,863 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 17:45:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 97 flow [2024-11-10 17:45:16,927 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2024-11-10 17:45:16,927 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 17:45:16,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 2/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-10 17:45:16,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 38 transitions, 97 flow [2024-11-10 17:45:16,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 34 transitions, 86 flow [2024-11-10 17:45:16,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:45:16,957 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;@42a0e9bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:45:16,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 17:45:17,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:45:17,004 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-11-10 17:45:17,005 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 17:45:17,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:17,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:17,019 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:17,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash -789590297, now seen corresponding path program 1 times [2024-11-10 17:45:17,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:17,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074090898] [2024-11-10 17:45:17,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:17,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:17,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074090898] [2024-11-10 17:45:17,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074090898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:17,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:17,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675879878] [2024-11-10 17:45:17,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:17,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:17,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:17,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 17:45:17,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 86 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) [2024-11-10 17:45:17,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:17,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 17:45:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:17,643 INFO L124 PetriNetUnfolderBase]: 588/1023 cut-off events. [2024-11-10 17:45:17,644 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-10 17:45:17,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 1023 events. 588/1023 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5446 event pairs, 178 based on Foata normal form. 95/1097 useless extension candidates. Maximal degree in co-relation 1849. Up to 828 conditions per place. [2024-11-10 17:45:17,660 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 32 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-10 17:45:17,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 180 flow [2024-11-10 17:45:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-10 17:45:17,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-10 17:45:17,673 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 86 flow. Second operand 3 states and 71 transitions. [2024-11-10 17:45:17,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 180 flow [2024-11-10 17:45:17,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 17:45:17,680 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 87 flow [2024-11-10 17:45:17,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-10 17:45:17,688 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-11-10 17:45:17,688 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 87 flow [2024-11-10 17:45:17,689 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) [2024-11-10 17:45:17,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:17,689 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:17,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:45:17,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:17,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash 903667099, now seen corresponding path program 1 times [2024-11-10 17:45:17,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:17,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138951875] [2024-11-10 17:45:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:17,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:17,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:17,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138951875] [2024-11-10 17:45:17,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138951875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:17,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:17,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:17,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771132683] [2024-11-10 17:45:17,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:17,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:17,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:17,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:17,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:17,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 17:45:17,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-10 17:45:17,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:17,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 17:45:17,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:18,044 INFO L124 PetriNetUnfolderBase]: 303/636 cut-off events. [2024-11-10 17:45:18,044 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-10 17:45:18,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 636 events. 303/636 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3031 event pairs, 108 based on Foata normal form. 80/708 useless extension candidates. Maximal degree in co-relation 735. Up to 327 conditions per place. [2024-11-10 17:45:18,050 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 29 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-11-10 17:45:18,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 181 flow [2024-11-10 17:45:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:18,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-10 17:45:18,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-10 17:45:18,054 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 87 flow. Second operand 3 states and 69 transitions. [2024-11-10 17:45:18,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 181 flow [2024-11-10 17:45:18,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:18,057 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 96 flow [2024-11-10 17:45:18,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-10 17:45:18,059 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-11-10 17:45:18,059 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 96 flow [2024-11-10 17:45:18,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-10 17:45:18,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:18,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:18,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:45:18,061 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:18,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:18,062 INFO L85 PathProgramCache]: Analyzing trace with hash 29386025, now seen corresponding path program 1 times [2024-11-10 17:45:18,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:18,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651514772] [2024-11-10 17:45:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:18,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:18,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:18,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651514772] [2024-11-10 17:45:18,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651514772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:18,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:18,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:18,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587272141] [2024-11-10 17:45:18,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:18,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:18,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:18,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 17:45:18,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-10 17:45:18,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:18,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 17:45:18,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:18,327 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2024-11-10 17:45:18,328 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-10 17:45:18,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 607 events. 298/607 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2850 event pairs, 65 based on Foata normal form. 5/607 useless extension candidates. Maximal degree in co-relation 255. Up to 364 conditions per place. [2024-11-10 17:45:18,332 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 40 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-11-10 17:45:18,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 240 flow [2024-11-10 17:45:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-10 17:45:18,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-10 17:45:18,335 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 96 flow. Second operand 4 states and 89 transitions. [2024-11-10 17:45:18,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 240 flow [2024-11-10 17:45:18,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:18,338 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 102 flow [2024-11-10 17:45:18,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-11-10 17:45:18,339 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-11-10 17:45:18,340 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 102 flow [2024-11-10 17:45:18,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-10 17:45:18,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:18,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:18,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:45:18,341 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:18,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1015385879, now seen corresponding path program 1 times [2024-11-10 17:45:18,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:18,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702390671] [2024-11-10 17:45:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:18,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:18,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:18,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:18,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702390671] [2024-11-10 17:45:18,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702390671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:18,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:18,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:18,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227493305] [2024-11-10 17:45:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:18,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:18,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:18,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 17:45:18,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-10 17:45:18,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:18,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 17:45:18,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:18,555 INFO L124 PetriNetUnfolderBase]: 341/666 cut-off events. [2024-11-10 17:45:18,556 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-11-10 17:45:18,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 666 events. 341/666 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3033 event pairs, 91 based on Foata normal form. 4/667 useless extension candidates. Maximal degree in co-relation 508. Up to 317 conditions per place. [2024-11-10 17:45:18,559 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 45 selfloop transitions, 6 changer transitions 0/58 dead transitions. [2024-11-10 17:45:18,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 267 flow [2024-11-10 17:45:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-10 17:45:18,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-10 17:45:18,563 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 102 flow. Second operand 4 states and 92 transitions. [2024-11-10 17:45:18,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 267 flow [2024-11-10 17:45:18,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 259 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:18,566 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 121 flow [2024-11-10 17:45:18,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-11-10 17:45:18,568 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-11-10 17:45:18,568 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 121 flow [2024-11-10 17:45:18,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-11-10 17:45:18,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:18,569 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:18,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:45:18,570 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:18,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:18,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1058455147, now seen corresponding path program 1 times [2024-11-10 17:45:18,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:18,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724116776] [2024-11-10 17:45:18,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:45:18,597 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:45:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:45:18,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 17:45:18,643 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:45:18,644 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-10 17:45:18,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-10 17:45:18,646 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-10 17:45:18,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-10 17:45:18,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-11-10 17:45:18,647 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-10 17:45:18,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:45:18,647 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-10 17:45:18,689 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 17:45:18,689 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 17:45:18,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:45:18 BasicIcfg [2024-11-10 17:45:18,695 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 17:45:18,696 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 17:45:18,697 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 17:45:18,697 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 17:45:18,698 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:16" (3/4) ... [2024-11-10 17:45:18,699 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-10 17:45:18,700 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 17:45:18,701 INFO L158 Benchmark]: Toolchain (without parser) took 2998.02ms. Allocated memory was 163.6MB in the beginning and 224.4MB in the end (delta: 60.8MB). Free memory was 106.3MB in the beginning and 88.2MB in the end (delta: 18.1MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2024-11-10 17:45:18,701 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory was 127.3MB in the beginning and 127.0MB in the end (delta: 234.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 17:45:18,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 557.57ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 83.8MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 17:45:18,702 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.79ms. Allocated memory is still 163.6MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:45:18,702 INFO L158 Benchmark]: Boogie Preprocessor took 46.77ms. Allocated memory is still 163.6MB. Free memory was 81.7MB in the beginning and 79.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:45:18,702 INFO L158 Benchmark]: IcfgBuilder took 434.13ms. Allocated memory is still 163.6MB. Free memory was 79.6MB in the beginning and 58.1MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-10 17:45:18,703 INFO L158 Benchmark]: TraceAbstraction took 1899.10ms. Allocated memory was 163.6MB in the beginning and 224.4MB in the end (delta: 60.8MB). Free memory was 57.2MB in the beginning and 89.2MB in the end (delta: -32.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-10 17:45:18,703 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 224.4MB. Free memory was 89.2MB in the beginning and 88.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 17:45:18,706 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory was 127.3MB in the beginning and 127.0MB in the end (delta: 234.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 557.57ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 83.8MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.79ms. Allocated memory is still 163.6MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.77ms. Allocated memory is still 163.6MB. Free memory was 81.7MB in the beginning and 79.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 434.13ms. Allocated memory is still 163.6MB. Free memory was 79.6MB in the beginning and 58.1MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1899.10ms. Allocated memory was 163.6MB in the beginning and 224.4MB in the end (delta: 60.8MB). Free memory was 57.2MB in the beginning and 89.2MB in the end (delta: -32.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 224.4MB. Free memory was 89.2MB in the beginning and 88.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=-2] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1, t3=0] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 734]: 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: 732]: 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: 733]: 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 7 procedures, 63 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: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 223 IncrementalHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2024-11-10 17:45:18,737 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread/lazy01.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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:45:20,820 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:45:20,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-10 17:45:20,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:45:20,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:45:20,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:45:20,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:45:20,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:45:20,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:45:20,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:45:20,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:45:20,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:45:20,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:45:20,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:45:20,945 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:45:20,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:45:20,946 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:45:20,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:45:20,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:45:20,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:45:20,947 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:45:20,948 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:45:20,948 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:45:20,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:45:20,949 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:45:20,949 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-10 17:45:20,949 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:45:20,950 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-10 17:45:20,950 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:45:20,950 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:45:20,951 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:45:20,951 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:45:20,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:45:20,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:45:20,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:45:20,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:45:20,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:45:20,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:45:20,952 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-10 17:45:20,953 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-10 17:45:20,953 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:45:20,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:45:20,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:45:20,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:45:20,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2024-11-10 17:45:21,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:45:21,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:45:21,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:45:21,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:45:21,268 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:45:21,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/lazy01.i [2024-11-10 17:45:22,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:45:22,919 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:45:22,920 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2024-11-10 17:45:22,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cbdc574/58711491a0a34f0f81374b7e77588404/FLAG06edb081d [2024-11-10 17:45:23,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5cbdc574/58711491a0a34f0f81374b7e77588404 [2024-11-10 17:45:23,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:45:23,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:45:23,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:45:23,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:45:23,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:45:23,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635ed5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23, skipping insertion in model container [2024-11-10 17:45:23,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,313 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:45:23,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:45:23,719 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:45:23,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:45:23,835 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:45:23,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23 WrapperNode [2024-11-10 17:45:23,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:45:23,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:45:23,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:45:23,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:45:23,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,891 INFO L138 Inliner]: procedures = 173, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-11-10 17:45:23,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:45:23,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:45:23,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:45:23,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:45:23,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,928 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-10 17:45:23,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,939 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,945 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:45:23,952 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:45:23,952 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:45:23,952 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:45:23,953 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (1/1) ... [2024-11-10 17:45:23,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:45:23,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:23,986 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) [2024-11-10 17:45:23,994 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 [2024-11-10 17:45:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 17:45:24,044 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 17:45:24,044 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 17:45:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 17:45:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 17:45:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 17:45:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 17:45:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:45:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-10 17:45:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-10 17:45:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-10 17:45:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-10 17:45:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 17:45:24,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:45:24,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:45:24,049 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:45:24,203 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:45:24,205 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:45:24,415 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:45:24,415 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:45:24,568 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:45:24,569 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:45:24,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:24 BoogieIcfgContainer [2024-11-10 17:45:24,569 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:45:24,571 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:45:24,571 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:45:24,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:45:24,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:45:23" (1/3) ... [2024-11-10 17:45:24,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b123f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:45:24, skipping insertion in model container [2024-11-10 17:45:24,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:23" (2/3) ... [2024-11-10 17:45:24,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b123f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:45:24, skipping insertion in model container [2024-11-10 17:45:24,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:24" (3/3) ... [2024-11-10 17:45:24,581 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-11-10 17:45:24,596 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:45:24,596 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 17:45:24,597 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:45:24,650 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 17:45:24,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 97 flow [2024-11-10 17:45:24,715 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2024-11-10 17:45:24,715 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 17:45:24,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 2/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-10 17:45:24,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 38 transitions, 97 flow [2024-11-10 17:45:24,723 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 34 transitions, 86 flow [2024-11-10 17:45:24,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:45:24,743 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;@27dd3491, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:45:24,743 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 17:45:24,757 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:45:24,757 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-11-10 17:45:24,757 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 17:45:24,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:24,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:24,759 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:24,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1481498727, now seen corresponding path program 1 times [2024-11-10 17:45:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:45:24,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508686805] [2024-11-10 17:45:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:24,778 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 [2024-11-10 17:45:24,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:45:24,781 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) [2024-11-10 17:45:24,782 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 [2024-11-10 17:45:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:24,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 17:45:24,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:24,939 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:45:24,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:45:24,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508686805] [2024-11-10 17:45:24,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508686805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:24,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:24,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108293692] [2024-11-10 17:45:24,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:24,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:24,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:45:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:24,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 17:45:24,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 86 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) [2024-11-10 17:45:24,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:24,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 17:45:24,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:25,218 INFO L124 PetriNetUnfolderBase]: 588/1023 cut-off events. [2024-11-10 17:45:25,218 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-10 17:45:25,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 1023 events. 588/1023 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5426 event pairs, 178 based on Foata normal form. 95/1097 useless extension candidates. Maximal degree in co-relation 1849. Up to 828 conditions per place. [2024-11-10 17:45:25,230 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 32 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-10 17:45:25,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 180 flow [2024-11-10 17:45:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-10 17:45:25,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-11-10 17:45:25,242 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 86 flow. Second operand 3 states and 71 transitions. [2024-11-10 17:45:25,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 180 flow [2024-11-10 17:45:25,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 17:45:25,250 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 87 flow [2024-11-10 17:45:25,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-11-10 17:45:25,256 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-11-10 17:45:25,256 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 87 flow [2024-11-10 17:45:25,256 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) [2024-11-10 17:45:25,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:25,257 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:25,261 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 (2)] Forceful destruction successful, exit code 0 [2024-11-10 17:45:25,460 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 [2024-11-10 17:45:25,460 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:25,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash 296969181, now seen corresponding path program 1 times [2024-11-10 17:45:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:45:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769404241] [2024-11-10 17:45:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:25,462 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 [2024-11-10 17:45:25,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:45:25,466 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) [2024-11-10 17:45:25,467 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 [2024-11-10 17:45:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:25,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 17:45:25,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:25,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-10 17:45:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:25,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:45:25,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:45:25,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769404241] [2024-11-10 17:45:25,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769404241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:25,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:25,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892257839] [2024-11-10 17:45:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:25,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:45:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:25,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 17:45:25,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-10 17:45:25,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:25,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 17:45:25,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:25,784 INFO L124 PetriNetUnfolderBase]: 303/636 cut-off events. [2024-11-10 17:45:25,785 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-11-10 17:45:25,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 636 events. 303/636 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3032 event pairs, 108 based on Foata normal form. 80/708 useless extension candidates. Maximal degree in co-relation 735. Up to 327 conditions per place. [2024-11-10 17:45:25,790 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 29 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-11-10 17:45:25,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 181 flow [2024-11-10 17:45:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-10 17:45:25,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-11-10 17:45:25,793 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 87 flow. Second operand 3 states and 69 transitions. [2024-11-10 17:45:25,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 181 flow [2024-11-10 17:45:25,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:25,795 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 96 flow [2024-11-10 17:45:25,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-10 17:45:25,797 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-11-10 17:45:25,797 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 96 flow [2024-11-10 17:45:25,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-10 17:45:25,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:25,798 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:25,802 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 [2024-11-10 17:45:26,001 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 [2024-11-10 17:45:26,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:26,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1598380247, now seen corresponding path program 1 times [2024-11-10 17:45:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:45:26,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130305809] [2024-11-10 17:45:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:26,004 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 [2024-11-10 17:45:26,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:45:26,005 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) [2024-11-10 17:45:26,007 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 [2024-11-10 17:45:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:26,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 17:45:26,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:26,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:45:26,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:45:26,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130305809] [2024-11-10 17:45:26,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130305809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:26,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:26,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:26,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232262358] [2024-11-10 17:45:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:26,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:26,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:45:26,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:26,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 17:45:26,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-10 17:45:26,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:26,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 17:45:26,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:26,251 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2024-11-10 17:45:26,251 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-10 17:45:26,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 607 events. 298/607 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2824 event pairs, 65 based on Foata normal form. 5/607 useless extension candidates. Maximal degree in co-relation 255. Up to 364 conditions per place. [2024-11-10 17:45:26,255 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 40 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-11-10 17:45:26,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 240 flow [2024-11-10 17:45:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-10 17:45:26,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855263157894737 [2024-11-10 17:45:26,257 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 96 flow. Second operand 4 states and 89 transitions. [2024-11-10 17:45:26,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 240 flow [2024-11-10 17:45:26,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:26,259 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 102 flow [2024-11-10 17:45:26,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-11-10 17:45:26,260 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-11-10 17:45:26,260 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 102 flow [2024-11-10 17:45:26,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-10 17:45:26,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:26,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:26,265 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 (4)] Ended with exit code 0 [2024-11-10 17:45:26,461 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 [2024-11-10 17:45:26,462 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:26,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:26,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1651815145, now seen corresponding path program 1 times [2024-11-10 17:45:26,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:45:26,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890084137] [2024-11-10 17:45:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:26,463 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 [2024-11-10 17:45:26,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:45:26,465 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) [2024-11-10 17:45:26,466 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 [2024-11-10 17:45:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:26,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 17:45:26,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:26,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:45:26,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-10 17:45:26,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890084137] [2024-11-10 17:45:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890084137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:26,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:45:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214048629] [2024-11-10 17:45:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:26,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-10 17:45:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:26,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-10 17:45:26,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-10 17:45:26,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:26,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-10 17:45:26,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:26,734 INFO L124 PetriNetUnfolderBase]: 294/567 cut-off events. [2024-11-10 17:45:26,734 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-11-10 17:45:26,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 567 events. 294/567 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2540 event pairs, 100 based on Foata normal form. 4/562 useless extension candidates. Maximal degree in co-relation 491. Up to 382 conditions per place. [2024-11-10 17:45:26,737 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-11-10 17:45:26,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 234 flow [2024-11-10 17:45:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-11-10 17:45:26,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-11-10 17:45:26,739 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 102 flow. Second operand 4 states and 88 transitions. [2024-11-10 17:45:26,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 234 flow [2024-11-10 17:45:26,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 226 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:26,742 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 106 flow [2024-11-10 17:45:26,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-11-10 17:45:26,743 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-11-10 17:45:26,743 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 106 flow [2024-11-10 17:45:26,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-10 17:45:26,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:26,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:26,749 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 [2024-11-10 17:45:26,946 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 [2024-11-10 17:45:26,947 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-10 17:45:26,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1931538667, now seen corresponding path program 1 times [2024-11-10 17:45:26,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-10 17:45:26,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140389645] [2024-11-10 17:45:26,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:26,948 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 [2024-11-10 17:45:26,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-10 17:45:26,951 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2024-11-10 17:45:26,952 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 (6)] Waiting until timeout for monitored process [2024-11-10 17:45:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:45:27,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 17:45:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 17:45:27,102 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-10 17:45:27,103 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 17:45:27,104 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-10 17:45:27,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-10 17:45:27,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-10 17:45:27,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-10 17:45:27,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-11-10 17:45:27,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-11-10 17:45:27,113 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 (6)] Ended with exit code 0 [2024-11-10 17:45:27,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 [2024-11-10 17:45:27,313 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-10 17:45:27,361 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 17:45:27,365 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 17:45:27,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:45:27 BasicIcfg [2024-11-10 17:45:27,371 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 17:45:27,372 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 17:45:27,372 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 17:45:27,372 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 17:45:27,372 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:24" (3/4) ... [2024-11-10 17:45:27,374 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-10 17:45:27,375 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 17:45:27,376 INFO L158 Benchmark]: Toolchain (without parser) took 4115.53ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 49.5MB in the beginning and 53.8MB in the end (delta: -4.3MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2024-11-10 17:45:27,376 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 60.8MB. Free memory was 45.4MB in the beginning and 45.3MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 17:45:27,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.87ms. Allocated memory is still 77.6MB. Free memory was 49.2MB in the beginning and 55.5MB in the end (delta: -6.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2024-11-10 17:45:27,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.12ms. Allocated memory is still 77.6MB. Free memory was 55.5MB in the beginning and 53.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 17:45:27,377 INFO L158 Benchmark]: Boogie Preprocessor took 58.00ms. Allocated memory is still 77.6MB. Free memory was 53.4MB in the beginning and 51.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 17:45:27,378 INFO L158 Benchmark]: IcfgBuilder took 617.01ms. Allocated memory is still 77.6MB. Free memory was 51.1MB in the beginning and 47.5MB in the end (delta: 3.5MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2024-11-10 17:45:27,378 INFO L158 Benchmark]: TraceAbstraction took 2800.46ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 46.8MB in the beginning and 53.8MB in the end (delta: -7.0MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2024-11-10 17:45:27,379 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 102.8MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 17:45:27,381 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 60.8MB. Free memory was 45.4MB in the beginning and 45.3MB in the end (delta: 45.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.87ms. Allocated memory is still 77.6MB. Free memory was 49.2MB in the beginning and 55.5MB in the end (delta: -6.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.12ms. Allocated memory is still 77.6MB. Free memory was 55.5MB in the beginning and 53.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.00ms. Allocated memory is still 77.6MB. Free memory was 53.4MB in the beginning and 51.1MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 617.01ms. Allocated memory is still 77.6MB. Free memory was 51.1MB in the beginning and 47.5MB in the end (delta: 3.5MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2800.46ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 46.8MB in the beginning and 53.8MB in the end (delta: -7.0MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 102.8MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=0] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=0, t2=1] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=0, t2=1, t3=2] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 734]: 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: 732]: 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: 733]: 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 7 procedures, 63 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: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 266 IncrementalHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 1 mSDtfsCounter, 266 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2024-11-10 17:45:27,415 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