./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/14_spin2003.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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-ext/14_spin2003.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 83bca07672f78100877a79a1440d2a8107bad3ebb200d176bee629abfa2ef706 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:07:37,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:07:37,847 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:07:37,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:07:37,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:07:37,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:07:37,885 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:07:37,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:07:37,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:07:37,887 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:07:37,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:07:37,888 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:07:37,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:07:37,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:07:37,889 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:07:37,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:07:37,890 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:07:37,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:07:37,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:07:37,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:07:37,891 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:07:37,892 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:07:37,892 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:07:37,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:07:37,893 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:07:37,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:07:37,893 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:07:37,894 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:07:37,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:07:37,894 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:07:37,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:07:37,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:07:37,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:07:37,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:07:37,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:07:37,897 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:07:37,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:07:37,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:07:37,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:07:37,898 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:07:37,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:07:37,901 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:07:37,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83bca07672f78100877a79a1440d2a8107bad3ebb200d176bee629abfa2ef706 [2024-11-17 03:07:38,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:07:38,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:07:38,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:07:38,196 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:07:38,197 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:07:38,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/14_spin2003.i [2024-11-17 03:07:39,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:07:39,949 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:07:39,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/14_spin2003.i [2024-11-17 03:07:39,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89974bae/cf8a5ca160a64a82a1d92216aced926c/FLAGb96b551f1 [2024-11-17 03:07:39,992 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89974bae/cf8a5ca160a64a82a1d92216aced926c [2024-11-17 03:07:39,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:07:39,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:07:40,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:07:40,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:07:40,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:07:40,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:07:39" (1/1) ... [2024-11-17 03:07:40,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e9f8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40, skipping insertion in model container [2024-11-17 03:07:40,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:07:39" (1/1) ... [2024-11-17 03:07:40,060 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:07:40,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:07:40,506 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:07:40,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:07:40,598 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:07:40,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40 WrapperNode [2024-11-17 03:07:40,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:07:40,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:07:40,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:07:40,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:07:40,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,649 INFO L138 Inliner]: procedures = 161, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-11-17 03:07:40,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:07:40,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:07:40,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:07:40,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:07:40,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,685 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]. [2024-11-17 03:07:40,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,690 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:07:40,697 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:07:40,697 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:07:40,697 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:07:40,698 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (1/1) ... [2024-11-17 03:07:40,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:07:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:07:40,737 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) [2024-11-17 03:07:40,739 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 [2024-11-17 03:07:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-17 03:07:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-17 03:07:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:07:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:07:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:07:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:07:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:07:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:07:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:07:40,787 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:07:40,902 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:07:40,905 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:07:41,002 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:07:41,002 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:07:41,096 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:07:41,097 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:07:41,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:07:41 BoogieIcfgContainer [2024-11-17 03:07:41,097 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:07:41,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:07:41,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:07:41,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:07:41,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:07:39" (1/3) ... [2024-11-17 03:07:41,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b44047d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:07:41, skipping insertion in model container [2024-11-17 03:07:41,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:40" (2/3) ... [2024-11-17 03:07:41,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b44047d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:07:41, skipping insertion in model container [2024-11-17 03:07:41,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:07:41" (3/3) ... [2024-11-17 03:07:41,106 INFO L112 eAbstractionObserver]: Analyzing ICFG 14_spin2003.i [2024-11-17 03:07:41,123 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:07:41,124 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:07:41,124 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:07:41,180 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:41,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 22 transitions, 48 flow [2024-11-17 03:07:41,248 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-11-17 03:07:41,251 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:41,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 29 events. 4/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 4 conditions per place. [2024-11-17 03:07:41,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 22 transitions, 48 flow [2024-11-17 03:07:41,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 22 transitions, 48 flow [2024-11-17 03:07:41,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:41,286 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;@39f25f97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:41,287 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:07:41,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:41,297 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:41,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:41,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:41,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:41,302 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:07:41,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:41,310 INFO L85 PathProgramCache]: Analyzing trace with hash 3737643, now seen corresponding path program 1 times [2024-11-17 03:07:41,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:41,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491081379] [2024-11-17 03:07:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:41,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:41,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491081379] [2024-11-17 03:07:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491081379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:41,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:41,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:41,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414219653] [2024-11-17 03:07:41,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:41,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:41,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:41,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:41,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:41,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-11-17 03:07:41,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 22 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-11-17 03:07:41,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:41,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-11-17 03:07:41,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:41,587 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-11-17 03:07:41,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:41,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 29 events. 5/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 5 based on Foata normal form. 11/40 useless extension candidates. Maximal degree in co-relation 40. Up to 20 conditions per place. [2024-11-17 03:07:41,592 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 8 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2024-11-17 03:07:41,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 14 transitions, 48 flow [2024-11-17 03:07:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 28 transitions. [2024-11-17 03:07:41,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-17 03:07:41,606 INFO L175 Difference]: Start difference. First operand has 22 places, 22 transitions, 48 flow. Second operand 2 states and 28 transitions. [2024-11-17 03:07:41,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 14 transitions, 48 flow [2024-11-17 03:07:41,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 48 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:41,611 INFO L231 Difference]: Finished difference. Result has 18 places, 14 transitions, 32 flow [2024-11-17 03:07:41,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=18, PETRI_TRANSITIONS=14} [2024-11-17 03:07:41,617 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -4 predicate places. [2024-11-17 03:07:41,618 INFO L471 AbstractCegarLoop]: Abstraction has has 18 places, 14 transitions, 32 flow [2024-11-17 03:07:41,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-11-17 03:07:41,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:41,618 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-17 03:07:41,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:07:41,619 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:07:41,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash -352473671, now seen corresponding path program 1 times [2024-11-17 03:07:41,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304220319] [2024-11-17 03:07:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:41,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:41,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:41,705 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:41,707 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-17 03:07:41,708 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-17 03:07:41,708 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-17 03:07:41,709 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-17 03:07:41,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:07:41,709 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:07:41,712 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:41,712 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:07:41,730 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:41,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 80 flow [2024-11-17 03:07:41,758 INFO L124 PetriNetUnfolderBase]: 7/49 cut-off events. [2024-11-17 03:07:41,759 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:07:41,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 49 events. 7/49 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 31. Up to 6 conditions per place. [2024-11-17 03:07:41,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 80 flow [2024-11-17 03:07:41,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 35 transitions, 80 flow [2024-11-17 03:07:41,765 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:41,768 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;@39f25f97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:41,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-17 03:07:41,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:41,776 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:41,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:41,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:41,777 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:41,778 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:07:41,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:41,778 INFO L85 PathProgramCache]: Analyzing trace with hash 4815083, now seen corresponding path program 1 times [2024-11-17 03:07:41,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:41,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506648505] [2024-11-17 03:07:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:41,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506648505] [2024-11-17 03:07:41,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506648505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197435567] [2024-11-17 03:07:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:41,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:41,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:41,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:41,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:41,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-11-17 03:07:41,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 80 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-11-17 03:07:41,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:41,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-11-17 03:07:41,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:41,949 INFO L124 PetriNetUnfolderBase]: 95/239 cut-off events. [2024-11-17 03:07:41,950 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-17 03:07:41,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 239 events. 95/239 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1125 event pairs, 95 based on Foata normal form. 95/331 useless extension candidates. Maximal degree in co-relation 295. Up to 182 conditions per place. [2024-11-17 03:07:41,954 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 14 selfloop transitions, 0 changer transitions 0/24 dead transitions. [2024-11-17 03:07:41,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 86 flow [2024-11-17 03:07:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2024-11-17 03:07:41,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-17 03:07:41,956 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 80 flow. Second operand 2 states and 44 transitions. [2024-11-17 03:07:41,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 86 flow [2024-11-17 03:07:41,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:41,958 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 58 flow [2024-11-17 03:07:41,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-11-17 03:07:41,959 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2024-11-17 03:07:41,960 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 58 flow [2024-11-17 03:07:41,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-11-17 03:07:41,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:41,960 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2024-11-17 03:07:41,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:07:41,961 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:07:41,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash -99736430, now seen corresponding path program 1 times [2024-11-17 03:07:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:41,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931962860] [2024-11-17 03:07:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:41,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:41,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:42,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:42,022 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:42,022 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-17 03:07:42,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-17 03:07:42,023 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-17 03:07:42,023 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-17 03:07:42,023 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-17 03:07:42,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:07:42,024 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:07:42,024 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:42,025 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:07:42,053 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:42,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 48 transitions, 114 flow [2024-11-17 03:07:42,080 INFO L124 PetriNetUnfolderBase]: 10/69 cut-off events. [2024-11-17 03:07:42,081 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:07:42,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 69 events. 10/69 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 55. Up to 8 conditions per place. [2024-11-17 03:07:42,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 48 transitions, 114 flow [2024-11-17 03:07:42,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 48 transitions, 114 flow [2024-11-17 03:07:42,088 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:42,091 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;@39f25f97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:42,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 03:07:42,095 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:42,096 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:42,096 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:42,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:42,096 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:42,097 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:07:42,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash 6292715, now seen corresponding path program 1 times [2024-11-17 03:07:42,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:42,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423130533] [2024-11-17 03:07:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:42,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:42,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:42,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423130533] [2024-11-17 03:07:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423130533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:42,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:42,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719882574] [2024-11-17 03:07:42,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:42,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:42,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:42,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-17 03:07:42,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 114 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-17 03:07:42,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:42,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-17 03:07:42,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:42,447 INFO L124 PetriNetUnfolderBase]: 995/1854 cut-off events. [2024-11-17 03:07:42,447 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-11-17 03:07:42,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3536 conditions, 1854 events. 995/1854 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11716 event pairs, 995 based on Foata normal form. 743/2572 useless extension candidates. Maximal degree in co-relation 705. Up to 1514 conditions per place. [2024-11-17 03:07:42,464 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 20 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-17 03:07:42,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 126 flow [2024-11-17 03:07:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-11-17 03:07:42,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-17 03:07:42,468 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 114 flow. Second operand 2 states and 60 transitions. [2024-11-17 03:07:42,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 126 flow [2024-11-17 03:07:42,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 124 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:42,470 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 84 flow [2024-11-17 03:07:42,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=84, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-11-17 03:07:42,472 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2024-11-17 03:07:42,473 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 84 flow [2024-11-17 03:07:42,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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) [2024-11-17 03:07:42,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:42,474 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:42,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:07:42,474 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:07:42,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -346194457, now seen corresponding path program 1 times [2024-11-17 03:07:42,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:42,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181475560] [2024-11-17 03:07:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:42,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:42,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181475560] [2024-11-17 03:07:42,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181475560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:42,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:42,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:07:42,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757173825] [2024-11-17 03:07:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:42,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:42,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-11-17 03:07:42,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-17 03:07:42,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:42,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-11-17 03:07:42,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:42,702 INFO L124 PetriNetUnfolderBase]: 564/972 cut-off events. [2024-11-17 03:07:42,704 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-17 03:07:42,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 972 events. 564/972 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4987 event pairs, 564 based on Foata normal form. 172/1122 useless extension candidates. Maximal degree in co-relation 1940. Up to 876 conditions per place. [2024-11-17 03:07:42,714 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 16 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2024-11-17 03:07:42,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 100 flow [2024-11-17 03:07:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-11-17 03:07:42,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-17 03:07:42,716 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 84 flow. Second operand 3 states and 68 transitions. [2024-11-17 03:07:42,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 100 flow [2024-11-17 03:07:42,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:42,718 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 68 flow [2024-11-17 03:07:42,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2024-11-17 03:07:42,722 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -13 predicate places. [2024-11-17 03:07:42,722 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 68 flow [2024-11-17 03:07:42,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-17 03:07:42,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:42,722 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-17 03:07:42,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:07:42,723 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:07:42,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1954966773, now seen corresponding path program 1 times [2024-11-17 03:07:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903641027] [2024-11-17 03:07:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:42,741 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:42,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:42,767 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:42,768 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-17 03:07:42,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-17 03:07:42,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-17 03:07:42,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-17 03:07:42,768 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-17 03:07:42,769 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-17 03:07:42,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:07:42,770 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 03:07:42,771 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:42,771 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 03:07:42,799 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:42,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 61 transitions, 150 flow [2024-11-17 03:07:42,810 INFO L124 PetriNetUnfolderBase]: 13/89 cut-off events. [2024-11-17 03:07:42,810 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 03:07:42,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 89 events. 13/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 263 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 80. Up to 10 conditions per place. [2024-11-17 03:07:42,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 61 transitions, 150 flow [2024-11-17 03:07:42,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 61 transitions, 150 flow [2024-11-17 03:07:42,814 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:42,815 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;@39f25f97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:42,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:07:42,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:42,819 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:42,819 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:42,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:42,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:42,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:07:42,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash 8170539, now seen corresponding path program 1 times [2024-11-17 03:07:42,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:42,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934265164] [2024-11-17 03:07:42,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:42,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:42,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:42,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934265164] [2024-11-17 03:07:42,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934265164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:42,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:42,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:42,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191173883] [2024-11-17 03:07:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:42,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:42,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:42,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:42,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-17 03:07:42,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2024-11-17 03:07:42,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:42,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-17 03:07:42,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:44,192 INFO L124 PetriNetUnfolderBase]: 8555/13706 cut-off events. [2024-11-17 03:07:44,192 INFO L125 PetriNetUnfolderBase]: For 2706/2706 co-relation queries the response was YES. [2024-11-17 03:07:44,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26621 conditions, 13706 events. 8555/13706 cut-off events. For 2706/2706 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 99986 event pairs, 8555 based on Foata normal form. 5495/19044 useless extension candidates. Maximal degree in co-relation 3572. Up to 11666 conditions per place. [2024-11-17 03:07:44,321 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 26 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-11-17 03:07:44,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 168 flow [2024-11-17 03:07:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:44,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 76 transitions. [2024-11-17 03:07:44,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6229508196721312 [2024-11-17 03:07:44,323 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 150 flow. Second operand 2 states and 76 transitions. [2024-11-17 03:07:44,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 168 flow [2024-11-17 03:07:44,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 162 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:44,329 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 110 flow [2024-11-17 03:07:44,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-17 03:07:44,330 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2024-11-17 03:07:44,330 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 110 flow [2024-11-17 03:07:44,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2024-11-17 03:07:44,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:44,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:44,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:07:44,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:07:44,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:44,332 INFO L85 PathProgramCache]: Analyzing trace with hash -869056621, now seen corresponding path program 1 times [2024-11-17 03:07:44,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:44,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447827024] [2024-11-17 03:07:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:44,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:44,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:44,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447827024] [2024-11-17 03:07:44,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447827024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:44,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:44,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:07:44,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323538443] [2024-11-17 03:07:44,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:44,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:44,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:44,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:44,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:44,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-11-17 03:07:44,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-17 03:07:44,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:44,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-11-17 03:07:44,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:44,917 INFO L124 PetriNetUnfolderBase]: 4064/6094 cut-off events. [2024-11-17 03:07:44,917 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2024-11-17 03:07:44,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12194 conditions, 6094 events. 4064/6094 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 35960 event pairs, 4064 based on Foata normal form. 1172/7149 useless extension candidates. Maximal degree in co-relation 12187. Up to 5626 conditions per place. [2024-11-17 03:07:45,062 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 21 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2024-11-17 03:07:45,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 130 flow [2024-11-17 03:07:45,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-17 03:07:45,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46994535519125685 [2024-11-17 03:07:45,064 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 110 flow. Second operand 3 states and 86 transitions. [2024-11-17 03:07:45,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 130 flow [2024-11-17 03:07:45,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:45,069 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 88 flow [2024-11-17 03:07:45,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-17 03:07:45,070 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -17 predicate places. [2024-11-17 03:07:45,070 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 88 flow [2024-11-17 03:07:45,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-17 03:07:45,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:45,071 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:45,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:07:45,071 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:07:45,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1710875497, now seen corresponding path program 1 times [2024-11-17 03:07:45,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:45,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467256144] [2024-11-17 03:07:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:45,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:45,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:45,103 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:45,103 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:45,104 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-17 03:07:45,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-17 03:07:45,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-17 03:07:45,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-17 03:07:45,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-17 03:07:45,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-17 03:07:45,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:07:45,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:07:45,105 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 03:07:45,106 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:45,106 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-17 03:07:45,131 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:45,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 74 transitions, 188 flow [2024-11-17 03:07:45,142 INFO L124 PetriNetUnfolderBase]: 16/109 cut-off events. [2024-11-17 03:07:45,143 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-17 03:07:45,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 109 events. 16/109 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 338 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 106. Up to 12 conditions per place. [2024-11-17 03:07:45,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 74 transitions, 188 flow [2024-11-17 03:07:45,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 74 transitions, 188 flow [2024-11-17 03:07:45,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:45,148 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;@39f25f97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:45,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 03:07:45,149 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:45,149 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:45,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:45,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:45,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:45,150 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:07:45,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash 10448555, now seen corresponding path program 1 times [2024-11-17 03:07:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:45,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683097506] [2024-11-17 03:07:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:45,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:45,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683097506] [2024-11-17 03:07:45,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683097506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:45,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:45,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:45,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749325771] [2024-11-17 03:07:45,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:45,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:45,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:45,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:45,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-17 03:07:45,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 188 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 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) [2024-11-17 03:07:45,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:45,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-17 03:07:45,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:52,724 INFO L124 PetriNetUnfolderBase]: 66875/97778 cut-off events. [2024-11-17 03:07:52,724 INFO L125 PetriNetUnfolderBase]: For 25086/25086 co-relation queries the response was YES. [2024-11-17 03:07:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192342 conditions, 97778 events. 66875/97778 cut-off events. For 25086/25086 co-relation queries the response was YES. Maximal size of possible extension queue 3714. Compared 776159 event pairs, 66875 based on Foata normal form. 39191/136020 useless extension candidates. Maximal degree in co-relation 26872. Up to 85538 conditions per place. [2024-11-17 03:07:53,581 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 32 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2024-11-17 03:07:53,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 212 flow [2024-11-17 03:07:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-17 03:07:53,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-11-17 03:07:53,585 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 188 flow. Second operand 2 states and 92 transitions. [2024-11-17 03:07:53,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 212 flow [2024-11-17 03:07:53,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 54 transitions, 200 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:53,614 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 136 flow [2024-11-17 03:07:53,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-17 03:07:53,615 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2024-11-17 03:07:53,615 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 136 flow [2024-11-17 03:07:53,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 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) [2024-11-17 03:07:53,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:53,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:53,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:07:53,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:07:53,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2130194527, now seen corresponding path program 1 times [2024-11-17 03:07:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:53,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976612486] [2024-11-17 03:07:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:53,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976612486] [2024-11-17 03:07:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976612486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:53,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:53,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:07:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134675623] [2024-11-17 03:07:53,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:53,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:53,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:53,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-11-17 03:07:53,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-17 03:07:53,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:53,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-11-17 03:07:53,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:56,080 INFO L124 PetriNetUnfolderBase]: 26564/36704 cut-off events. [2024-11-17 03:07:56,080 INFO L125 PetriNetUnfolderBase]: For 4238/4238 co-relation queries the response was YES. [2024-11-17 03:07:56,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73430 conditions, 36704 events. 26564/36704 cut-off events. For 4238/4238 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 233984 event pairs, 26564 based on Foata normal form. 7422/43534 useless extension candidates. Maximal degree in co-relation 73422. Up to 34376 conditions per place. [2024-11-17 03:07:56,311 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 26 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2024-11-17 03:07:56,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 160 flow [2024-11-17 03:07:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-17 03:07:56,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-11-17 03:07:56,314 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 136 flow. Second operand 3 states and 104 transitions. [2024-11-17 03:07:56,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 160 flow [2024-11-17 03:07:56,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 39 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:56,331 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 108 flow [2024-11-17 03:07:56,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-11-17 03:07:56,332 INFO L277 CegarLoopForPetriNet]: 74 programPoint places, -21 predicate places. [2024-11-17 03:07:56,332 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 108 flow [2024-11-17 03:07:56,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-17 03:07:56,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:56,332 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:56,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:07:56,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:07:56,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1387957713, now seen corresponding path program 1 times [2024-11-17 03:07:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:56,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174265881] [2024-11-17 03:07:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:56,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:56,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:56,366 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:56,367 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-17 03:07:56,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-17 03:07:56,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-17 03:07:56,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-17 03:07:56,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-17 03:07:56,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-17 03:07:56,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-17 03:07:56,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-17 03:07:56,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:07:56,368 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 03:07:56,369 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:56,370 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-17 03:07:56,393 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:56,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 87 transitions, 228 flow [2024-11-17 03:07:56,403 INFO L124 PetriNetUnfolderBase]: 19/129 cut-off events. [2024-11-17 03:07:56,403 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-17 03:07:56,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 129 events. 19/129 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 408 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 133. Up to 14 conditions per place. [2024-11-17 03:07:56,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 87 transitions, 228 flow [2024-11-17 03:07:56,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 87 transitions, 228 flow [2024-11-17 03:07:56,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:56,407 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;@39f25f97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:56,408 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-17 03:07:56,409 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:56,409 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:56,409 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:56,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:56,409 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:56,409 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:07:56,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 13126763, now seen corresponding path program 1 times [2024-11-17 03:07:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178120039] [2024-11-17 03:07:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:56,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178120039] [2024-11-17 03:07:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178120039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:56,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:56,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957436311] [2024-11-17 03:07:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:56,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:56,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:56,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 87 [2024-11-17 03:07:56,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 228 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-11-17 03:07:56,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:56,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 87 [2024-11-17 03:07:56,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand