./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-100.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-theta/unwind3-100.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 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:45:12,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:45:12,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:45:12,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:45:12,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:45:12,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:45:12,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:45:12,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:45:12,998 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:45:12,999 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:45:13,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:45:13,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:45:13,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:45:13,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:45:13,003 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:45:13,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:45:13,004 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:45:13,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:45:13,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:45:13,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:45:13,009 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:45:13,010 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:45:13,010 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:45:13,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:45:13,011 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:45:13,011 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:45:13,011 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:45:13,012 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:45:13,012 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:45:13,012 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:45:13,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:45:13,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:45:13,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:45:13,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:45:13,016 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:45:13,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:45:13,016 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:45:13,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:45:13,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:45:13,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:45:13,017 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:45:13,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:45:13,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51e84781857cfc73ae131a38742d9d6222707e54f6a010e2853f82c7770f5a96 [2024-11-17 03:45:13,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:45:13,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:45:13,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:45:13,297 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:45:13,297 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:45:13,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-17 03:45:14,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:45:14,929 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:45:14,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-100.i [2024-11-17 03:45:14,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719afbc82/f47f22cc304a4607ba52561cbe66e623/FLAG3e129deb4 [2024-11-17 03:45:15,291 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/719afbc82/f47f22cc304a4607ba52561cbe66e623 [2024-11-17 03:45:15,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:45:15,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:45:15,296 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:45:15,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:45:15,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:45:15,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa92bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15, skipping insertion in model container [2024-11-17 03:45:15,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:45:15,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:45:15,696 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:45:15,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:45:15,776 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:45:15,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15 WrapperNode [2024-11-17 03:45:15,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:45:15,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:45:15,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:45:15,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:45:15,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,818 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-11-17 03:45:15,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:45:15,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:45:15,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:45:15,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:45:15,826 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,843 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 03:45:15,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,846 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:45:15,850 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:45:15,850 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:45:15,851 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:45:15,851 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (1/1) ... [2024-11-17 03:45:15,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:45:15,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:45:15,883 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 03:45:15,885 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 03:45:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:45:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-17 03:45:15,922 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-17 03:45:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-17 03:45:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-17 03:45:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:45:15,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:45:15,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:45:15,925 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 03:45:16,059 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:45:16,062 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:45:16,205 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:45:16,206 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:45:16,282 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:45:16,282 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:45:16,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:45:16 BoogieIcfgContainer [2024-11-17 03:45:16,283 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:45:16,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:45:16,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:45:16,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:45:16,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:45:15" (1/3) ... [2024-11-17 03:45:16,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13314603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:45:16, skipping insertion in model container [2024-11-17 03:45:16,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:45:15" (2/3) ... [2024-11-17 03:45:16,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13314603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:45:16, skipping insertion in model container [2024-11-17 03:45:16,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:45:16" (3/3) ... [2024-11-17 03:45:16,293 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-100.i [2024-11-17 03:45:16,307 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:45:16,308 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:45:16,308 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:45:16,380 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:45:16,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 74 flow [2024-11-17 03:45:16,439 INFO L124 PetriNetUnfolderBase]: 10/55 cut-off events. [2024-11-17 03:45:16,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:45:16,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 55 events. 10/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 126 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-17 03:45:16,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 33 transitions, 74 flow [2024-11-17 03:45:16,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 32 transitions, 71 flow [2024-11-17 03:45:16,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:45:16,462 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;@206ee3b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:45:16,462 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-17 03:45:16,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:45:16,468 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-17 03:45:16,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:45:16,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:16,469 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:16,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:45:16,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1786619418, now seen corresponding path program 1 times [2024-11-17 03:45:16,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:16,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458196073] [2024-11-17 03:45:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:16,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:16,646 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 03:45:16,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:16,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458196073] [2024-11-17 03:45:16,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458196073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:16,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:16,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:45:16,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128684935] [2024-11-17 03:45:16,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:16,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:45:16,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:16,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:45:16,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:45:16,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-11-17 03:45:16,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 71 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 03:45:16,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:16,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-11-17 03:45:16,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:16,792 INFO L124 PetriNetUnfolderBase]: 109/261 cut-off events. [2024-11-17 03:45:16,792 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:45:16,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 261 events. 109/261 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1068 event pairs, 94 based on Foata normal form. 50/292 useless extension candidates. Maximal degree in co-relation 394. Up to 205 conditions per place. [2024-11-17 03:45:16,797 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 17 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2024-11-17 03:45:16,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 95 flow [2024-11-17 03:45:16,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:45:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:45:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 43 transitions. [2024-11-17 03:45:16,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-17 03:45:16,811 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 71 flow. Second operand 2 states and 43 transitions. [2024-11-17 03:45:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 95 flow [2024-11-17 03:45:16,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:16,815 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 60 flow [2024-11-17 03:45:16,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-11-17 03:45:16,820 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-11-17 03:45:16,820 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 60 flow [2024-11-17 03:45:16,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 03:45:16,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:16,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:16,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:45:16,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:45:16,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash 437964966, now seen corresponding path program 1 times [2024-11-17 03:45:16,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:16,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676788236] [2024-11-17 03:45:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:16,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:16,967 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 03:45:16,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:16,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676788236] [2024-11-17 03:45:16,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676788236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:16,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:16,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:45:16,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327659919] [2024-11-17 03:45:16,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:16,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:45:16,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:45:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:45:16,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-11-17 03:45:16,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:45:16,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:16,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-11-17 03:45:16,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:17,106 INFO L124 PetriNetUnfolderBase]: 101/246 cut-off events. [2024-11-17 03:45:17,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:45:17,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 246 events. 101/246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 942 event pairs, 32 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 441. Up to 179 conditions per place. [2024-11-17 03:45:17,109 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 20 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-17 03:45:17,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 114 flow [2024-11-17 03:45:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:45:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:45:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-17 03:45:17,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-17 03:45:17,111 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 60 flow. Second operand 4 states and 60 transitions. [2024-11-17 03:45:17,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 114 flow [2024-11-17 03:45:17,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:45:17,113 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 70 flow [2024-11-17 03:45:17,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-17 03:45:17,116 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2024-11-17 03:45:17,116 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 70 flow [2024-11-17 03:45:17,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:45:17,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:17,117 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:17,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:45:17,118 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-17 03:45:17,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:17,119 INFO L85 PathProgramCache]: Analyzing trace with hash 757111635, now seen corresponding path program 1 times [2024-11-17 03:45:17,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:17,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856449922] [2024-11-17 03:45:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:17,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:17,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:45:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:17,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:45:17,193 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:45:17,194 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-17 03:45:17,198 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-17 03:45:17,199 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-17 03:45:17,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-17 03:45:17,200 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-17 03:45:17,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:45:17,200 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-17 03:45:17,206 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:45:17,207 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:45:17,235 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:45:17,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 52 transitions, 124 flow [2024-11-17 03:45:17,242 INFO L124 PetriNetUnfolderBase]: 15/83 cut-off events. [2024-11-17 03:45:17,242 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:45:17,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 15/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 226 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2024-11-17 03:45:17,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 52 transitions, 124 flow [2024-11-17 03:45:17,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 36 transitions, 85 flow [2024-11-17 03:45:17,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:45:17,246 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;@206ee3b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:45:17,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-17 03:45:17,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:45:17,248 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-17 03:45:17,248 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:45:17,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:17,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:17,248 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:45:17,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash -910887048, now seen corresponding path program 1 times [2024-11-17 03:45:17,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:17,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480716690] [2024-11-17 03:45:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:17,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:17,264 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 03:45:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:17,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480716690] [2024-11-17 03:45:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480716690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:17,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:17,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:45:17,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875161885] [2024-11-17 03:45:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:17,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:45:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:45:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:45:17,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-11-17 03:45:17,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 85 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 03:45:17,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:17,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-11-17 03:45:17,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:17,361 INFO L124 PetriNetUnfolderBase]: 729/1298 cut-off events. [2024-11-17 03:45:17,361 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-17 03:45:17,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 1298 events. 729/1298 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6573 event pairs, 666 based on Foata normal form. 198/1441 useless extension candidates. Maximal degree in co-relation 533. Up to 1129 conditions per place. [2024-11-17 03:45:17,369 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 21 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2024-11-17 03:45:17,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 117 flow [2024-11-17 03:45:17,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:45:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:45:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 57 transitions. [2024-11-17 03:45:17,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2024-11-17 03:45:17,370 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 85 flow. Second operand 2 states and 57 transitions. [2024-11-17 03:45:17,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 117 flow [2024-11-17 03:45:17,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:17,371 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 74 flow [2024-11-17 03:45:17,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-11-17 03:45:17,372 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2024-11-17 03:45:17,372 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 74 flow [2024-11-17 03:45:17,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 03:45:17,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:17,373 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:17,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:45:17,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:45:17,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:17,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1815345772, now seen corresponding path program 1 times [2024-11-17 03:45:17,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:17,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118712353] [2024-11-17 03:45:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:17,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:17,412 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 03:45:17,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:17,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118712353] [2024-11-17 03:45:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118712353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:45:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210818108] [2024-11-17 03:45:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:17,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:45:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:45:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:45:17,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-17 03:45:17,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 03:45:17,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:17,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-17 03:45:17,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:17,571 INFO L124 PetriNetUnfolderBase]: 745/1366 cut-off events. [2024-11-17 03:45:17,571 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-17 03:45:17,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 1366 events. 745/1366 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6959 event pairs, 388 based on Foata normal form. 0/1274 useless extension candidates. Maximal degree in co-relation 2569. Up to 1143 conditions per place. [2024-11-17 03:45:17,579 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 25 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-17 03:45:17,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 140 flow [2024-11-17 03:45:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:45:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:45:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-17 03:45:17,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40865384615384615 [2024-11-17 03:45:17,581 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 74 flow. Second operand 4 states and 85 transitions. [2024-11-17 03:45:17,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 140 flow [2024-11-17 03:45:17,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:45:17,582 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 88 flow [2024-11-17 03:45:17,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-11-17 03:45:17,583 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-11-17 03:45:17,583 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 88 flow [2024-11-17 03:45:17,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 03:45:17,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:17,584 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:17,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:45:17,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:45:17,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1652730701, now seen corresponding path program 1 times [2024-11-17 03:45:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861169720] [2024-11-17 03:45:17,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:17,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861169720] [2024-11-17 03:45:17,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861169720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:17,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:17,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:45:17,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214334605] [2024-11-17 03:45:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:17,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:45:17,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:17,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:45:17,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:45:17,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-17 03:45:17,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 88 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 03:45:17,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:17,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-17 03:45:17,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:17,732 INFO L124 PetriNetUnfolderBase]: 718/1333 cut-off events. [2024-11-17 03:45:17,733 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-17 03:45:17,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 1333 events. 718/1333 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6860 event pairs, 658 based on Foata normal form. 0/1252 useless extension candidates. Maximal degree in co-relation 2519. Up to 1101 conditions per place. [2024-11-17 03:45:17,742 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 20 selfloop transitions, 1 changer transitions 1/31 dead transitions. [2024-11-17 03:45:17,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 31 transitions, 130 flow [2024-11-17 03:45:17,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:45:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:45:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-17 03:45:17,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42948717948717946 [2024-11-17 03:45:17,745 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 88 flow. Second operand 3 states and 67 transitions. [2024-11-17 03:45:17,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 31 transitions, 130 flow [2024-11-17 03:45:17,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:45:17,747 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 82 flow [2024-11-17 03:45:17,747 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2024-11-17 03:45:17,747 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2024-11-17 03:45:17,747 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 82 flow [2024-11-17 03:45:17,748 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 03:45:17,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:17,748 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:17,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:45:17,748 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-17 03:45:17,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash 386142607, now seen corresponding path program 1 times [2024-11-17 03:45:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373610610] [2024-11-17 03:45:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:17,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:45:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:17,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:45:17,786 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:45:17,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-17 03:45:17,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-17 03:45:17,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-17 03:45:17,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-17 03:45:17,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-17 03:45:17,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-17 03:45:17,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:45:17,788 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:45:17,788 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:45:17,788 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:45:17,834 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:45:17,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 71 transitions, 178 flow [2024-11-17 03:45:17,844 INFO L124 PetriNetUnfolderBase]: 20/111 cut-off events. [2024-11-17 03:45:17,844 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:45:17,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 111 events. 20/111 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2024-11-17 03:45:17,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 71 transitions, 178 flow [2024-11-17 03:45:17,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 40 transitions, 101 flow [2024-11-17 03:45:17,847 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:45:17,848 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;@206ee3b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:45:17,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-17 03:45:17,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:45:17,850 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-17 03:45:17,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:45:17,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:17,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:17,850 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:17,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1036710262, now seen corresponding path program 1 times [2024-11-17 03:45:17,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:17,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931799418] [2024-11-17 03:45:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:17,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:17,869 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 03:45:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931799418] [2024-11-17 03:45:17,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931799418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:17,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:17,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:45:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835111124] [2024-11-17 03:45:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:17,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:45:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:45:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:45:17,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 71 [2024-11-17 03:45:17,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 101 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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 03:45:17,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:17,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 71 [2024-11-17 03:45:17,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:18,230 INFO L124 PetriNetUnfolderBase]: 4121/6156 cut-off events. [2024-11-17 03:45:18,231 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2024-11-17 03:45:18,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12146 conditions, 6156 events. 4121/6156 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 32981 event pairs, 3866 based on Foata normal form. 838/6827 useless extension candidates. Maximal degree in co-relation 2476. Up to 5737 conditions per place. [2024-11-17 03:45:18,264 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 25 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2024-11-17 03:45:18,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 141 flow [2024-11-17 03:45:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:45:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:45:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2024-11-17 03:45:18,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-17 03:45:18,265 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 101 flow. Second operand 2 states and 71 transitions. [2024-11-17 03:45:18,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 141 flow [2024-11-17 03:45:18,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 35 transitions, 138 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:18,267 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 88 flow [2024-11-17 03:45:18,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-17 03:45:18,268 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2024-11-17 03:45:18,268 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 88 flow [2024-11-17 03:45:18,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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 03:45:18,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:18,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:18,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:45:18,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:18,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2085692731, now seen corresponding path program 1 times [2024-11-17 03:45:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:18,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206266763] [2024-11-17 03:45:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:18,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:18,299 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 03:45:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206266763] [2024-11-17 03:45:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206266763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:18,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:18,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:45:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843839308] [2024-11-17 03:45:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:18,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:45:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:45:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:45:18,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 71 [2024-11-17 03:45:18,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 03:45:18,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:18,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 71 [2024-11-17 03:45:18,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:18,823 INFO L124 PetriNetUnfolderBase]: 4281/6610 cut-off events. [2024-11-17 03:45:18,824 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-11-17 03:45:18,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12811 conditions, 6610 events. 4281/6610 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 37014 event pairs, 2772 based on Foata normal form. 0/6326 useless extension candidates. Maximal degree in co-relation 12805. Up to 5959 conditions per place. [2024-11-17 03:45:18,869 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 29 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-11-17 03:45:18,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 162 flow [2024-11-17 03:45:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:45:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:45:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-17 03:45:18,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38380281690140844 [2024-11-17 03:45:18,871 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 88 flow. Second operand 4 states and 109 transitions. [2024-11-17 03:45:18,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 162 flow [2024-11-17 03:45:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:45:18,873 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 102 flow [2024-11-17 03:45:18,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2024-11-17 03:45:18,875 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-11-17 03:45:18,875 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 102 flow [2024-11-17 03:45:18,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 03:45:18,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:18,875 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:18,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:45:18,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:18,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:18,876 INFO L85 PathProgramCache]: Analyzing trace with hash -279720421, now seen corresponding path program 1 times [2024-11-17 03:45:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:18,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309571261] [2024-11-17 03:45:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:18,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309571261] [2024-11-17 03:45:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309571261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:18,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:18,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:45:18,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415605270] [2024-11-17 03:45:18,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:18,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:45:18,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:45:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:45:18,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 71 [2024-11-17 03:45:18,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 03:45:18,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:18,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 71 [2024-11-17 03:45:18,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:19,320 INFO L124 PetriNetUnfolderBase]: 4110/6369 cut-off events. [2024-11-17 03:45:19,321 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-11-17 03:45:19,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12427 conditions, 6369 events. 4110/6369 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 35773 event pairs, 3858 based on Foata normal form. 0/6144 useless extension candidates. Maximal degree in co-relation 12419. Up to 5709 conditions per place. [2024-11-17 03:45:19,349 INFO L140 encePairwiseOnDemand]: 69/71 looper letters, 24 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2024-11-17 03:45:19,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 35 transitions, 152 flow [2024-11-17 03:45:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:45:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:45:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-17 03:45:19,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40375586854460094 [2024-11-17 03:45:19,350 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 102 flow. Second operand 3 states and 86 transitions. [2024-11-17 03:45:19,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 35 transitions, 152 flow [2024-11-17 03:45:19,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:45:19,352 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 96 flow [2024-11-17 03:45:19,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-11-17 03:45:19,353 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-17 03:45:19,354 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 96 flow [2024-11-17 03:45:19,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 03:45:19,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:19,354 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:19,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:45:19,355 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-17 03:45:19,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash 208822094, now seen corresponding path program 1 times [2024-11-17 03:45:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:19,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494064598] [2024-11-17 03:45:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:19,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:19,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:45:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:19,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:45:19,382 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:45:19,383 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-17 03:45:19,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-17 03:45:19,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-17 03:45:19,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-17 03:45:19,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-17 03:45:19,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-17 03:45:19,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-17 03:45:19,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:45:19,383 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:45:19,384 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:45:19,384 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 03:45:19,415 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:45:19,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 90 transitions, 236 flow [2024-11-17 03:45:19,422 INFO L124 PetriNetUnfolderBase]: 25/139 cut-off events. [2024-11-17 03:45:19,422 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-17 03:45:19,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 139 events. 25/139 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 436 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 163. Up to 10 conditions per place. [2024-11-17 03:45:19,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 90 transitions, 236 flow [2024-11-17 03:45:19,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 44 transitions, 119 flow [2024-11-17 03:45:19,424 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:45:19,424 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;@206ee3b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:45:19,424 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-17 03:45:19,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:45:19,425 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-17 03:45:19,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:45:19,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:19,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:19,426 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:45:19,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:19,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2130878236, now seen corresponding path program 1 times [2024-11-17 03:45:19,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:19,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051336678] [2024-11-17 03:45:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:19,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:19,434 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 03:45:19,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:19,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051336678] [2024-11-17 03:45:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051336678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:19,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:19,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:45:19,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893355133] [2024-11-17 03:45:19,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:19,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:45:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:19,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:45:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:45:19,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2024-11-17 03:45:19,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 119 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 03:45:19,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:19,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2024-11-17 03:45:19,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:21,266 INFO L124 PetriNetUnfolderBase]: 21337/29246 cut-off events. [2024-11-17 03:45:21,267 INFO L125 PetriNetUnfolderBase]: For 1306/1306 co-relation queries the response was YES. [2024-11-17 03:45:21,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58149 conditions, 29246 events. 21337/29246 cut-off events. For 1306/1306 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 164949 event pairs, 20314 based on Foata normal form. 3398/32029 useless extension candidates. Maximal degree in co-relation 12126. Up to 27817 conditions per place. [2024-11-17 03:45:21,575 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 29 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-11-17 03:45:21,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 167 flow [2024-11-17 03:45:21,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:45:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:45:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2024-11-17 03:45:21,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-17 03:45:21,576 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 119 flow. Second operand 2 states and 85 transitions. [2024-11-17 03:45:21,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 167 flow [2024-11-17 03:45:21,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 160 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:21,587 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 102 flow [2024-11-17 03:45:21,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-11-17 03:45:21,588 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2024-11-17 03:45:21,588 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 102 flow [2024-11-17 03:45:21,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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 03:45:21,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:21,589 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:21,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:45:21,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:45:21,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1619751345, now seen corresponding path program 1 times [2024-11-17 03:45:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:21,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195266394] [2024-11-17 03:45:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:21,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:21,636 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 03:45:21,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195266394] [2024-11-17 03:45:21,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195266394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:21,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:21,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:45:21,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928113822] [2024-11-17 03:45:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:21,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:45:21,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:45:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:45:21,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 90 [2024-11-17 03:45:21,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 03:45:21,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:21,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 90 [2024-11-17 03:45:21,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:23,349 INFO L124 PetriNetUnfolderBase]: 22265/30658 cut-off events. [2024-11-17 03:45:23,350 INFO L125 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2024-11-17 03:45:23,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60668 conditions, 30658 events. 22265/30658 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 173228 event pairs, 16148 based on Foata normal form. 0/29734 useless extension candidates. Maximal degree in co-relation 60661. Up to 29063 conditions per place. [2024-11-17 03:45:23,522 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 33 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-17 03:45:23,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 184 flow [2024-11-17 03:45:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:45:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:45:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-11-17 03:45:23,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-11-17 03:45:23,523 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 102 flow. Second operand 4 states and 133 transitions. [2024-11-17 03:45:23,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 184 flow [2024-11-17 03:45:23,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:45:23,525 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 116 flow [2024-11-17 03:45:23,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2024-11-17 03:45:23,525 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-11-17 03:45:23,525 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 116 flow [2024-11-17 03:45:23,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 03:45:23,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:23,526 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:23,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 03:45:23,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:45:23,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2061592918, now seen corresponding path program 1 times [2024-11-17 03:45:23,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:23,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287321443] [2024-11-17 03:45:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:23,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:23,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287321443] [2024-11-17 03:45:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287321443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:23,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:45:23,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417512623] [2024-11-17 03:45:23,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:23,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:45:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:45:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:45:23,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2024-11-17 03:45:23,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 03:45:23,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:23,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2024-11-17 03:45:23,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:25,391 INFO L124 PetriNetUnfolderBase]: 21326/29395 cut-off events. [2024-11-17 03:45:25,391 INFO L125 PetriNetUnfolderBase]: For 848/848 co-relation queries the response was YES. [2024-11-17 03:45:25,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58559 conditions, 29395 events. 21326/29395 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 166391 event pairs, 20306 based on Foata normal form. 0/28722 useless extension candidates. Maximal degree in co-relation 58550. Up to 27789 conditions per place. [2024-11-17 03:45:25,541 INFO L140 encePairwiseOnDemand]: 88/90 looper letters, 28 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-11-17 03:45:25,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 39 transitions, 174 flow [2024-11-17 03:45:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:45:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:45:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-17 03:45:25,543 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-17 03:45:25,543 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 116 flow. Second operand 3 states and 105 transitions. [2024-11-17 03:45:25,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 39 transitions, 174 flow [2024-11-17 03:45:25,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 39 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:45:25,545 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 110 flow [2024-11-17 03:45:25,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=110, 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=110, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2024-11-17 03:45:25,546 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-11-17 03:45:25,546 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 110 flow [2024-11-17 03:45:25,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 03:45:25,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:25,546 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:25,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 03:45:25,547 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:45:25,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1272185170, now seen corresponding path program 1 times [2024-11-17 03:45:25,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:25,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273949417] [2024-11-17 03:45:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:25,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:25,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:25,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273949417] [2024-11-17 03:45:25,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273949417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:25,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:25,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:45:25,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830765393] [2024-11-17 03:45:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:25,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:45:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:45:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:45:25,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 90 [2024-11-17 03:45:25,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 03:45:25,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:25,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 90 [2024-11-17 03:45:25,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:28,017 INFO L124 PetriNetUnfolderBase]: 31817/44890 cut-off events. [2024-11-17 03:45:28,017 INFO L125 PetriNetUnfolderBase]: For 847/847 co-relation queries the response was YES. [2024-11-17 03:45:28,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87601 conditions, 44890 events. 31817/44890 cut-off events. For 847/847 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 278977 event pairs, 16809 based on Foata normal form. 0/43333 useless extension candidates. Maximal degree in co-relation 87592. Up to 23272 conditions per place. [2024-11-17 03:45:28,219 INFO L140 encePairwiseOnDemand]: 84/90 looper letters, 41 selfloop transitions, 3 changer transitions 31/83 dead transitions. [2024-11-17 03:45:28,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 350 flow [2024-11-17 03:45:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:45:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:45:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-11-17 03:45:28,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-17 03:45:28,221 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 110 flow. Second operand 6 states and 225 transitions. [2024-11-17 03:45:28,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 350 flow [2024-11-17 03:45:28,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:28,223 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 123 flow [2024-11-17 03:45:28,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2024-11-17 03:45:28,224 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-11-17 03:45:28,224 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 123 flow [2024-11-17 03:45:28,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 03:45:28,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:28,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:28,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 03:45:28,224 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:45:28,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash -726578091, now seen corresponding path program 1 times [2024-11-17 03:45:28,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:28,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749572168] [2024-11-17 03:45:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:28,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:28,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749572168] [2024-11-17 03:45:28,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749572168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:45:28,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958448526] [2024-11-17 03:45:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:28,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:45:28,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:45:28,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:45:28,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:45:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:28,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:45:28,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:28,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:45:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958448526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:45:28,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:45:28,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-17 03:45:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567789271] [2024-11-17 03:45:28,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:45:28,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:45:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:28,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:45:28,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:45:28,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 90 [2024-11-17 03:45:28,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 123 flow. Second operand has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 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 03:45:28,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:28,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 90 [2024-11-17 03:45:28,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:30,212 INFO L124 PetriNetUnfolderBase]: 18434/27863 cut-off events. [2024-11-17 03:45:30,212 INFO L125 PetriNetUnfolderBase]: For 5799/5799 co-relation queries the response was YES. [2024-11-17 03:45:30,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57657 conditions, 27863 events. 18434/27863 cut-off events. For 5799/5799 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 178253 event pairs, 2240 based on Foata normal form. 84/27179 useless extension candidates. Maximal degree in co-relation 57646. Up to 21250 conditions per place. [2024-11-17 03:45:30,337 INFO L140 encePairwiseOnDemand]: 85/90 looper letters, 61 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-17 03:45:30,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 74 transitions, 335 flow [2024-11-17 03:45:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:45:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:45:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-11-17 03:45:30,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-11-17 03:45:30,341 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 123 flow. Second operand 7 states and 238 transitions. [2024-11-17 03:45:30,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 74 transitions, 335 flow [2024-11-17 03:45:30,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 329 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-17 03:45:30,497 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 160 flow [2024-11-17 03:45:30,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2024-11-17 03:45:30,498 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-11-17 03:45:30,498 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 160 flow [2024-11-17 03:45:30,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.5) internal successors, (265), 10 states have internal predecessors, (265), 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 03:45:30,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:30,499 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:30,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:45:30,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-17 03:45:30,699 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-17 03:45:30,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1388625712, now seen corresponding path program 1 times [2024-11-17 03:45:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:30,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480314577] [2024-11-17 03:45:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:30,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:30,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:45:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:30,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:45:30,734 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:45:30,734 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-17 03:45:30,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-17 03:45:30,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 8 remaining) [2024-11-17 03:45:30,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-17 03:45:30,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-17 03:45:30,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-17 03:45:30,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-17 03:45:30,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-17 03:45:30,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 03:45:30,735 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-17 03:45:30,735 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:45:30,735 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-17 03:45:30,769 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:45:30,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 109 transitions, 298 flow [2024-11-17 03:45:30,780 INFO L124 PetriNetUnfolderBase]: 30/167 cut-off events. [2024-11-17 03:45:30,780 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-17 03:45:30,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 167 events. 30/167 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 545 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 199. Up to 12 conditions per place. [2024-11-17 03:45:30,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 109 transitions, 298 flow [2024-11-17 03:45:30,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 139 flow [2024-11-17 03:45:30,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:45:30,782 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;@206ee3b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:45:30,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-17 03:45:30,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:45:30,786 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-17 03:45:30,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:45:30,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:30,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:30,786 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:45:30,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:30,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1943854, now seen corresponding path program 1 times [2024-11-17 03:45:30,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:30,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444629884] [2024-11-17 03:45:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:30,795 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 03:45:30,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:30,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444629884] [2024-11-17 03:45:30,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444629884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:30,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:30,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:45:30,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870781464] [2024-11-17 03:45:30,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:30,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:45:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:45:30,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:45:30,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 109 [2024-11-17 03:45:30,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 139 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:45:30,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:30,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 109 [2024-11-17 03:45:30,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:38,205 INFO L124 PetriNetUnfolderBase]: 104793/136190 cut-off events. [2024-11-17 03:45:38,205 INFO L125 PetriNetUnfolderBase]: For 7770/7770 co-relation queries the response was YES. [2024-11-17 03:45:38,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271590 conditions, 136190 events. 104793/136190 cut-off events. For 7770/7770 co-relation queries the response was YES. Maximal size of possible extension queue 3512. Compared 798899 event pairs, 100698 based on Foata normal form. 13638/147421 useless extension candidates. Maximal degree in co-relation 58161. Up to 130729 conditions per place. [2024-11-17 03:45:38,810 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 33 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-11-17 03:45:38,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 195 flow [2024-11-17 03:45:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:45:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:45:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 99 transitions. [2024-11-17 03:45:38,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4541284403669725 [2024-11-17 03:45:38,812 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 139 flow. Second operand 2 states and 99 transitions. [2024-11-17 03:45:38,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 195 flow [2024-11-17 03:45:38,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 43 transitions, 182 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:38,892 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 116 flow [2024-11-17 03:45:38,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-11-17 03:45:38,892 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-11-17 03:45:38,892 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 116 flow [2024-11-17 03:45:38,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:45:38,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:38,893 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:38,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 03:45:38,893 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:45:38,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash 46776112, now seen corresponding path program 1 times [2024-11-17 03:45:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21631437] [2024-11-17 03:45:38,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:38,925 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 03:45:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21631437] [2024-11-17 03:45:38,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21631437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:38,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:38,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:45:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047351814] [2024-11-17 03:45:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:38,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:45:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:38,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:45:38,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:45:38,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 109 [2024-11-17 03:45:38,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 03:45:38,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:38,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 109 [2024-11-17 03:45:38,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:46,306 INFO L124 PetriNetUnfolderBase]: 109561/142214 cut-off events. [2024-11-17 03:45:46,307 INFO L125 PetriNetUnfolderBase]: For 3396/3396 co-relation queries the response was YES. [2024-11-17 03:45:46,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282817 conditions, 142214 events. 109561/142214 cut-off events. For 3396/3396 co-relation queries the response was YES. Maximal size of possible extension queue 3431. Compared 827194 event pairs, 85012 based on Foata normal form. 0/138730 useless extension candidates. Maximal degree in co-relation 282809. Up to 136839 conditions per place. [2024-11-17 03:45:47,035 INFO L140 encePairwiseOnDemand]: 105/109 looper letters, 37 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-17 03:45:47,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 206 flow [2024-11-17 03:45:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:45:47,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:45:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-11-17 03:45:47,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36009174311926606 [2024-11-17 03:45:47,037 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 116 flow. Second operand 4 states and 157 transitions. [2024-11-17 03:45:47,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 206 flow [2024-11-17 03:45:47,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 206 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:45:47,046 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 130 flow [2024-11-17 03:45:47,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2024-11-17 03:45:47,046 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-11-17 03:45:47,046 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 130 flow [2024-11-17 03:45:47,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 03:45:47,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:47,047 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:47,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-17 03:45:47,047 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-17 03:45:47,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1076242020, now seen corresponding path program 1 times [2024-11-17 03:45:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:47,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580130676] [2024-11-17 03:45:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:47,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:47,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:47,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580130676] [2024-11-17 03:45:47,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580130676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:47,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:47,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:45:47,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546914866] [2024-11-17 03:45:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:47,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:45:47,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:47,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:45:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:45:47,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 109 [2024-11-17 03:45:47,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 03:45:47,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:47,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 109 [2024-11-17 03:45:47,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand