./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c -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 4b21640b39ce7bcc8ee8415d7ec787ca73953d49130bebf43478653d490e2460 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:42:45,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:42:45,409 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:42:45,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:42:45,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:42:45,439 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:42:45,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:42:45,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:42:45,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:42:45,440 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:42:45,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:42:45,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:42:45,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:42:45,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:42:45,442 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:42:45,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:42:45,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:42:45,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:42:45,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:42:45,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:42:45,446 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:42:45,446 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:42:45,446 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:42:45,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:42:45,447 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:42:45,447 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:42:45,447 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:42:45,447 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:42:45,447 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:42:45,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:42:45,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:42:45,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:42:45,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:42:45,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:42:45,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:42:45,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:42:45,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:42:45,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:42:45,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:42:45,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:42:45,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:42:45,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:42:45,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b21640b39ce7bcc8ee8415d7ec787ca73953d49130bebf43478653d490e2460 [2024-11-20 17:42:45,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:42:45,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:42:45,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:42:45,725 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:42:45,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:42:45,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2024-11-20 17:42:47,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:42:47,173 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:42:47,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2024-11-20 17:42:47,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6eea471/cc8d9ead7729431bb7f5a1f324152600/FLAG2065696c1 [2024-11-20 17:42:47,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c6eea471/cc8d9ead7729431bb7f5a1f324152600 [2024-11-20 17:42:47,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:42:47,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:42:47,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:42:47,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:42:47,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:42:47,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3bf57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47, skipping insertion in model container [2024-11-20 17:42:47,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,223 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:42:47,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:42:47,419 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:42:47,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:42:47,472 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:42:47,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47 WrapperNode [2024-11-20 17:42:47,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:42:47,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:42:47,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:42:47,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:42:47,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,505 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 54 [2024-11-20 17:42:47,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:42:47,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:42:47,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:42:47,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:42:47,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,524 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 17:42:47,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:42:47,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:42:47,540 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:42:47,540 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:42:47,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (1/1) ... [2024-11-20 17:42:47,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:42:47,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:47,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 17:42:47,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 17:42:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:42:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:42:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:42:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:42:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:42:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:42:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:42:47,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:42:47,629 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:42:47,696 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:42:47,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:42:47,816 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:42:47,817 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:42:47,910 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:42:47,911 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:42:47,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:47 BoogieIcfgContainer [2024-11-20 17:42:47,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:42:47,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:42:47,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:42:47,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:42:47,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:42:47" (1/3) ... [2024-11-20 17:42:47,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635470e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:42:47, skipping insertion in model container [2024-11-20 17:42:47,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:42:47" (2/3) ... [2024-11-20 17:42:47,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635470e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:42:47, skipping insertion in model container [2024-11-20 17:42:47,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:47" (3/3) ... [2024-11-20 17:42:47,922 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2024-11-20 17:42:47,936 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:42:47,937 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:42:47,937 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:42:47,970 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:42:47,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 74 flow [2024-11-20 17:42:48,017 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-11-20 17:42:48,017 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:42:48,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 2/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-20 17:42:48,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 30 transitions, 74 flow [2024-11-20 17:42:48,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 27 transitions, 66 flow [2024-11-20 17:42:48,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:42:48,033 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;@74ecf37c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:42:48,034 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 17:42:48,041 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:42:48,042 INFO L124 PetriNetUnfolderBase]: 2/24 cut-off events. [2024-11-20 17:42:48,042 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:42:48,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:48,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:42:48,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:42:48,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 72138652, now seen corresponding path program 1 times [2024-11-20 17:42:48,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:48,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564445870] [2024-11-20 17:42:48,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:48,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:48,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:48,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564445870] [2024-11-20 17:42:48,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564445870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:42:48,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:42:48,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:42:48,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613304684] [2024-11-20 17:42:48,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:42:48,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:42:48,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:48,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:42:48,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:42:48,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-20 17:42:48,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:48,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:48,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-20 17:42:48,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:48,455 INFO L124 PetriNetUnfolderBase]: 161/295 cut-off events. [2024-11-20 17:42:48,457 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-20 17:42:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 295 events. 161/295 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1102 event pairs, 32 based on Foata normal form. 2/291 useless extension candidates. Maximal degree in co-relation 526. Up to 243 conditions per place. [2024-11-20 17:42:48,462 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 23 selfloop transitions, 5 changer transitions 1/34 dead transitions. [2024-11-20 17:42:48,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 147 flow [2024-11-20 17:42:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:42:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:42:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-20 17:42:48,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-20 17:42:48,478 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 66 flow. Second operand 3 states and 55 transitions. [2024-11-20 17:42:48,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 147 flow [2024-11-20 17:42:48,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:42:48,483 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 79 flow [2024-11-20 17:42:48,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-11-20 17:42:48,488 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-11-20 17:42:48,489 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 79 flow [2024-11-20 17:42:48,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:48,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:48,489 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] [2024-11-20 17:42:48,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:42:48,489 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:42:48,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1423540226, now seen corresponding path program 1 times [2024-11-20 17:42:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:48,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796250227] [2024-11-20 17:42:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:48,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:48,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796250227] [2024-11-20 17:42:48,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796250227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:42:48,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:42:48,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:42:48,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018814718] [2024-11-20 17:42:48,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:42:48,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:42:48,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:42:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:42:48,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-20 17:42:48,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:48,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:48,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-20 17:42:48,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:48,799 INFO L124 PetriNetUnfolderBase]: 199/363 cut-off events. [2024-11-20 17:42:48,799 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-20 17:42:48,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 363 events. 199/363 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1473 event pairs, 32 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 200. Up to 202 conditions per place. [2024-11-20 17:42:48,802 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 10 changer transitions 3/55 dead transitions. [2024-11-20 17:42:48,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 241 flow [2024-11-20 17:42:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:42:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:42:48,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-11-20 17:42:48,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-20 17:42:48,803 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 79 flow. Second operand 5 states and 93 transitions. [2024-11-20 17:42:48,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 241 flow [2024-11-20 17:42:48,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:42:48,805 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 135 flow [2024-11-20 17:42:48,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2024-11-20 17:42:48,806 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2024-11-20 17:42:48,806 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 135 flow [2024-11-20 17:42:48,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:48,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:48,806 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] [2024-11-20 17:42:48,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:42:48,807 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:42:48,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1666413284, now seen corresponding path program 2 times [2024-11-20 17:42:48,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:48,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141551042] [2024-11-20 17:42:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:48,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:48,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:48,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141551042] [2024-11-20 17:42:48,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141551042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:42:48,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:42:48,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:42:48,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541052046] [2024-11-20 17:42:48,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:42:48,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:42:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:42:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:42:48,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-20 17:42:48,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:48,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:48,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-20 17:42:48,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:48,988 INFO L124 PetriNetUnfolderBase]: 173/336 cut-off events. [2024-11-20 17:42:48,989 INFO L125 PetriNetUnfolderBase]: For 223/227 co-relation queries the response was YES. [2024-11-20 17:42:48,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 336 events. 173/336 cut-off events. For 223/227 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1350 event pairs, 11 based on Foata normal form. 21/351 useless extension candidates. Maximal degree in co-relation 278. Up to 132 conditions per place. [2024-11-20 17:42:48,993 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 39 selfloop transitions, 12 changer transitions 3/61 dead transitions. [2024-11-20 17:42:48,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 339 flow [2024-11-20 17:42:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:42:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:42:48,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-20 17:42:48,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-11-20 17:42:48,996 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 135 flow. Second operand 5 states and 94 transitions. [2024-11-20 17:42:48,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 339 flow [2024-11-20 17:42:48,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 339 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 17:42:49,000 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 221 flow [2024-11-20 17:42:49,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-20 17:42:49,001 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2024-11-20 17:42:49,001 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 221 flow [2024-11-20 17:42:49,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:49,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:49,002 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] [2024-11-20 17:42:49,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:42:49,003 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:42:49,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash -104102815, now seen corresponding path program 1 times [2024-11-20 17:42:49,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:49,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717089403] [2024-11-20 17:42:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:49,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:49,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717089403] [2024-11-20 17:42:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717089403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:42:49,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:42:49,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:42:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428222454] [2024-11-20 17:42:49,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:42:49,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:42:49,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:49,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:42:49,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:42:49,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-20 17:42:49,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:49,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:49,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-20 17:42:49,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:49,186 INFO L124 PetriNetUnfolderBase]: 178/347 cut-off events. [2024-11-20 17:42:49,187 INFO L125 PetriNetUnfolderBase]: For 780/786 co-relation queries the response was YES. [2024-11-20 17:42:49,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 347 events. 178/347 cut-off events. For 780/786 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1422 event pairs, 23 based on Foata normal form. 7/345 useless extension candidates. Maximal degree in co-relation 435. Up to 215 conditions per place. [2024-11-20 17:42:49,190 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 9 changer transitions 4/62 dead transitions. [2024-11-20 17:42:49,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 425 flow [2024-11-20 17:42:49,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:42:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:42:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-11-20 17:42:49,192 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2024-11-20 17:42:49,193 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 221 flow. Second operand 5 states and 91 transitions. [2024-11-20 17:42:49,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 425 flow [2024-11-20 17:42:49,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 421 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-20 17:42:49,198 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 272 flow [2024-11-20 17:42:49,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-20 17:42:49,199 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2024-11-20 17:42:49,200 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 272 flow [2024-11-20 17:42:49,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:49,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:49,200 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] [2024-11-20 17:42:49,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:42:49,201 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:42:49,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:49,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1037903011, now seen corresponding path program 2 times [2024-11-20 17:42:49,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:49,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357991105] [2024-11-20 17:42:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:49,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:49,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:49,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357991105] [2024-11-20 17:42:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357991105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:42:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:42:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:42:49,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796393043] [2024-11-20 17:42:49,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:42:49,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:42:49,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:42:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:42:49,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-20 17:42:49,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:49,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:49,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-20 17:42:49,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:49,377 INFO L124 PetriNetUnfolderBase]: 159/320 cut-off events. [2024-11-20 17:42:49,377 INFO L125 PetriNetUnfolderBase]: For 908/916 co-relation queries the response was YES. [2024-11-20 17:42:49,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 320 events. 159/320 cut-off events. For 908/916 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1172 event pairs, 24 based on Foata normal form. 18/335 useless extension candidates. Maximal degree in co-relation 830. Up to 149 conditions per place. [2024-11-20 17:42:49,381 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 42 selfloop transitions, 12 changer transitions 2/63 dead transitions. [2024-11-20 17:42:49,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 484 flow [2024-11-20 17:42:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:42:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:42:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-20 17:42:49,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-11-20 17:42:49,382 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 272 flow. Second operand 5 states and 89 transitions. [2024-11-20 17:42:49,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 484 flow [2024-11-20 17:42:49,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 468 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-20 17:42:49,388 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 335 flow [2024-11-20 17:42:49,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-11-20 17:42:49,389 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 23 predicate places. [2024-11-20 17:42:49,389 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 335 flow [2024-11-20 17:42:49,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:49,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:42:49,389 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, 1, 1, 1, 1, 1] [2024-11-20 17:42:49,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:42:49,389 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:42:49,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:42:49,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1286744053, now seen corresponding path program 1 times [2024-11-20 17:42:49,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:42:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164411100] [2024-11-20 17:42:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:49,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:42:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:49,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:42:49,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164411100] [2024-11-20 17:42:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164411100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:42:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429041361] [2024-11-20 17:42:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:42:49,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:42:49,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:42:49,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:42:49,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:42:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:42:49,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:42:49,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:42:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:49,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:42:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:42:49,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429041361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:42:49,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:42:49,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-20 17:42:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433030984] [2024-11-20 17:42:49,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:42:49,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:42:49,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:42:49,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:42:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:42:49,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-20 17:42:49,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 335 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:49,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:42:49,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-20 17:42:49,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:42:49,911 INFO L124 PetriNetUnfolderBase]: 164/320 cut-off events. [2024-11-20 17:42:49,911 INFO L125 PetriNetUnfolderBase]: For 1090/1108 co-relation queries the response was YES. [2024-11-20 17:42:49,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 320 events. 164/320 cut-off events. For 1090/1108 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1152 event pairs, 37 based on Foata normal form. 3/310 useless extension candidates. Maximal degree in co-relation 933. Up to 105 conditions per place. [2024-11-20 17:42:49,912 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2024-11-20 17:42:49,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 559 flow [2024-11-20 17:42:49,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:42:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:42:49,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-20 17:42:49,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-20 17:42:49,913 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 335 flow. Second operand 6 states and 84 transitions. [2024-11-20 17:42:49,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 559 flow [2024-11-20 17:42:49,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 542 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-20 17:42:49,917 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-11-20 17:42:49,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-11-20 17:42:49,917 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2024-11-20 17:42:49,918 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-11-20 17:42:49,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:42:49,920 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2024-11-20 17:42:49,920 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-20 17:42:49,920 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-20 17:42:49,921 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-20 17:42:49,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 17:42:50,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-20 17:42:50,125 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-11-20 17:42:50,128 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 17:42:50,128 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:42:50,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:42:50 BasicIcfg [2024-11-20 17:42:50,132 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:42:50,133 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:42:50,133 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:42:50,133 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:42:50,134 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:42:47" (3/4) ... [2024-11-20 17:42:50,136 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 17:42:50,139 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-20 17:42:50,139 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-20 17:42:50,143 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2024-11-20 17:42:50,143 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-20 17:42:50,143 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-20 17:42:50,143 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 17:42:50,248 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 17:42:50,252 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 17:42:50,252 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:42:50,253 INFO L158 Benchmark]: Toolchain (without parser) took 3058.54ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 65.0MB in the beginning and 138.7MB in the end (delta: -73.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:42:50,253 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:42:50,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.50ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 64.8MB in the beginning and 163.2MB in the end (delta: -98.4MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2024-11-20 17:42:50,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.10ms. Allocated memory is still 190.8MB. Free memory was 163.2MB in the beginning and 162.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:42:50,254 INFO L158 Benchmark]: Boogie Preprocessor took 33.54ms. Allocated memory is still 190.8MB. Free memory was 162.2MB in the beginning and 160.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:42:50,254 INFO L158 Benchmark]: RCFGBuilder took 371.82ms. Allocated memory is still 190.8MB. Free memory was 160.1MB in the beginning and 138.1MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 17:42:50,254 INFO L158 Benchmark]: TraceAbstraction took 2219.52ms. Allocated memory is still 190.8MB. Free memory was 137.0MB in the beginning and 143.2MB in the end (delta: -6.2MB). Peak memory consumption was 79.0MB. Max. memory is 16.1GB. [2024-11-20 17:42:50,255 INFO L158 Benchmark]: Witness Printer took 119.43ms. Allocated memory is still 190.8MB. Free memory was 143.2MB in the beginning and 138.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 17:42:50,259 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 86.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.50ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 64.8MB in the beginning and 163.2MB in the end (delta: -98.4MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.10ms. Allocated memory is still 190.8MB. Free memory was 163.2MB in the beginning and 162.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.54ms. Allocated memory is still 190.8MB. Free memory was 162.2MB in the beginning and 160.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.82ms. Allocated memory is still 190.8MB. Free memory was 160.1MB in the beginning and 138.1MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2219.52ms. Allocated memory is still 190.8MB. Free memory was 137.0MB in the beginning and 143.2MB in the end (delta: -6.2MB). Peak memory consumption was 79.0MB. Max. memory is 16.1GB. * Witness Printer took 119.43ms. Allocated memory is still 190.8MB. Free memory was 143.2MB in the beginning and 138.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 60]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 4 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: 2.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 88 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 442 IncrementalHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 3 mSDtfsCounter, 442 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=5, InterpolantAutomatonStates: 29, 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, 0.7s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 872 SizeOfPredicates, 5 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 4/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 17:42:50,279 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: TRUE