./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/exponential-4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/exponential-4.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 6e0717c26865b2b98bbf38ebc229049821d555def6fcecec3e56a64fb6f63f98 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:26:01,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:26:01,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:26:01,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:26:01,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:26:01,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:26:01,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:26:01,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:26:01,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:26:01,468 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:26:01,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:26:01,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:26:01,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:26:01,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:26:01,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:26:01,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:26:01,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:26:01,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:26:01,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:26:01,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:26:01,473 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:26:01,474 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:26:01,474 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:26:01,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:26:01,475 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:26:01,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:26:01,476 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:26:01,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:26:01,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:26:01,477 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:26:01,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:26:01,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:26:01,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:26:01,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:26:01,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:26:01,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:26:01,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:26:01,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:26:01,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:26:01,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:26:01,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:26:01,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:26:01,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e0717c26865b2b98bbf38ebc229049821d555def6fcecec3e56a64fb6f63f98 [2024-11-10 18:26:01,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:26:01,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:26:01,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:26:01,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:26:01,778 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:26:01,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-4.i [2024-11-10 18:26:03,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:26:03,744 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:26:03,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-4.i [2024-11-10 18:26:03,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7512a041a/cc54d3a2b5e5433880b47cc228b9d53b/FLAGa7bd45098 [2024-11-10 18:26:03,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7512a041a/cc54d3a2b5e5433880b47cc228b9d53b [2024-11-10 18:26:03,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:26:03,785 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:26:03,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:26:03,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:26:03,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:26:03,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:26:03" (1/1) ... [2024-11-10 18:26:03,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dcb6a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:03, skipping insertion in model container [2024-11-10 18:26:03,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:26:03" (1/1) ... [2024-11-10 18:26:03,837 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:26:04,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:26:04,202 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:26:04,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:26:04,312 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:26:04,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04 WrapperNode [2024-11-10 18:26:04,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:26:04,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:26:04,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:26:04,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:26:04,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,369 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2024-11-10 18:26:04,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:26:04,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:26:04,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:26:04,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:26:04,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,415 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]. [2024-11-10 18:26:04,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,428 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:26:04,439 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:26:04,441 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:26:04,441 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:26:04,442 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (1/1) ... [2024-11-10 18:26:04,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:26:04,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:26:04,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:26:04,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:26:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:26:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-10 18:26:04,538 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-10 18:26:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-10 18:26:04,538 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-10 18:26:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:26:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:26:04,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:26:04,540 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:26:04,668 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:26:04,670 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:26:04,856 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:26:04,857 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:26:04,949 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:26:04,950 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:26:04,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:26:04 BoogieIcfgContainer [2024-11-10 18:26:04,951 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:26:04,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:26:04,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:26:04,956 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:26:04,957 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:26:03" (1/3) ... [2024-11-10 18:26:04,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d4a08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:26:04, skipping insertion in model container [2024-11-10 18:26:04,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:26:04" (2/3) ... [2024-11-10 18:26:04,958 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d4a08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:26:04, skipping insertion in model container [2024-11-10 18:26:04,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:26:04" (3/3) ... [2024-11-10 18:26:04,960 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-4.i [2024-11-10 18:26:04,978 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:26:04,979 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:26:04,979 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:26:05,043 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:26:05,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 74 flow [2024-11-10 18:26:05,127 INFO L124 PetriNetUnfolderBase]: 10/52 cut-off events. [2024-11-10 18:26:05,128 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:26:05,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 10/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 107 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2024-11-10 18:26:05,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 33 transitions, 74 flow [2024-11-10 18:26:05,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 31 transitions, 69 flow [2024-11-10 18:26:05,152 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:26:05,163 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;@2bf01ded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:26:05,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 18:26:05,176 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:26:05,176 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-10 18:26:05,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:26:05,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:05,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:05,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:05,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash -471878561, now seen corresponding path program 1 times [2024-11-10 18:26:05,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:05,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982611226] [2024-11-10 18:26:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:05,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:05,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:05,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:05,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982611226] [2024-11-10 18:26:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982611226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:05,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:05,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:26:05,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695556098] [2024-11-10 18:26:05,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:05,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:26:05,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:05,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:26:05,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:26:05,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-10 18:26:05,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 69 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:05,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:05,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-10 18:26:05,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:05,580 INFO L124 PetriNetUnfolderBase]: 90/230 cut-off events. [2024-11-10 18:26:05,581 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 18:26:05,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 230 events. 90/230 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1036 event pairs, 80 based on Foata normal form. 40/261 useless extension candidates. Maximal degree in co-relation 371. Up to 166 conditions per place. [2024-11-10 18:26:05,586 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 15 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2024-11-10 18:26:05,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 89 flow [2024-11-10 18:26:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:26:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:26:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 43 transitions. [2024-11-10 18:26:05,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-10 18:26:05,602 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 69 flow. Second operand 2 states and 43 transitions. [2024-11-10 18:26:05,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 89 flow [2024-11-10 18:26:05,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:26:05,609 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2024-11-10 18:26:05,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-10 18:26:05,616 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-10 18:26:05,619 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2024-11-10 18:26:05,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:05,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:05,619 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:05,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:26:05,620 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:05,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:05,621 INFO L85 PathProgramCache]: Analyzing trace with hash -567303208, now seen corresponding path program 1 times [2024-11-10 18:26:05,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:05,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041008611] [2024-11-10 18:26:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:05,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:05,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:26:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:05,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:26:05,721 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:26:05,725 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 18:26:05,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-10 18:26:05,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-10 18:26:05,728 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 18:26:05,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:26:05,732 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 18:26:05,736 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:26:05,737 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 18:26:05,759 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:26:05,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 41 transitions, 102 flow [2024-11-10 18:26:05,772 INFO L124 PetriNetUnfolderBase]: 15/82 cut-off events. [2024-11-10 18:26:05,773 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 18:26:05,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 82 events. 15/82 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 191 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 65. Up to 6 conditions per place. [2024-11-10 18:26:05,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 41 transitions, 102 flow [2024-11-10 18:26:05,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 39 transitions, 96 flow [2024-11-10 18:26:05,776 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:26:05,777 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;@2bf01ded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:26:05,777 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 18:26:05,783 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:26:05,785 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-10 18:26:05,785 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:26:05,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:05,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:05,785 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:05,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:05,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1209735391, now seen corresponding path program 1 times [2024-11-10 18:26:05,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:05,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883543328] [2024-11-10 18:26:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:05,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:05,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883543328] [2024-11-10 18:26:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883543328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:05,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:26:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087581817] [2024-11-10 18:26:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:05,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:26:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:26:05,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:26:05,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-10 18:26:05,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:05,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:05,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-10 18:26:05,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:06,217 INFO L124 PetriNetUnfolderBase]: 1719/2825 cut-off events. [2024-11-10 18:26:06,218 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-10 18:26:06,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5362 conditions, 2825 events. 1719/2825 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16593 event pairs, 1628 based on Foata normal form. 364/3081 useless extension candidates. Maximal degree in co-relation 1470. Up to 2416 conditions per place. [2024-11-10 18:26:06,243 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 21 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-10 18:26:06,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 128 flow [2024-11-10 18:26:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:26:06,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:26:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 53 transitions. [2024-11-10 18:26:06,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-11-10 18:26:06,245 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 96 flow. Second operand 2 states and 53 transitions. [2024-11-10 18:26:06,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 128 flow [2024-11-10 18:26:06,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:26:06,248 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 85 flow [2024-11-10 18:26:06,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-11-10 18:26:06,251 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2024-11-10 18:26:06,251 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 85 flow [2024-11-10 18:26:06,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:06,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:06,252 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:06,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:26:06,252 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:06,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:06,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1017633049, now seen corresponding path program 1 times [2024-11-10 18:26:06,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:06,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685882177] [2024-11-10 18:26:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:06,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:06,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685882177] [2024-11-10 18:26:06,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685882177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:06,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:06,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:26:06,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69729664] [2024-11-10 18:26:06,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:06,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:26:06,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:26:06,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:26:06,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-10 18:26:06,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:06,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:06,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-10 18:26:06,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:06,701 INFO L124 PetriNetUnfolderBase]: 1946/3233 cut-off events. [2024-11-10 18:26:06,701 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-10 18:26:06,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6083 conditions, 3233 events. 1946/3233 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19517 event pairs, 1340 based on Foata normal form. 0/3094 useless extension candidates. Maximal degree in co-relation 6077. Up to 2704 conditions per place. [2024-11-10 18:26:06,731 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 27 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2024-11-10 18:26:06,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 157 flow [2024-11-10 18:26:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:26:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:26:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-10 18:26:06,733 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2024-11-10 18:26:06,734 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 85 flow. Second operand 3 states and 69 transitions. [2024-11-10 18:26:06,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 157 flow [2024-11-10 18:26:06,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:26:06,739 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 97 flow [2024-11-10 18:26:06,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-11-10 18:26:06,742 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2024-11-10 18:26:06,742 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 97 flow [2024-11-10 18:26:06,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:06,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:06,742 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:06,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:26:06,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:06,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1328218463, now seen corresponding path program 1 times [2024-11-10 18:26:06,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983177922] [2024-11-10 18:26:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:06,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:06,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:26:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:06,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:26:06,818 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:26:06,819 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 18:26:06,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-10 18:26:06,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-10 18:26:06,819 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 18:26:06,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:26:06,820 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 18:26:06,821 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:26:06,824 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 18:26:06,857 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:26:06,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 134 flow [2024-11-10 18:26:06,891 INFO L124 PetriNetUnfolderBase]: 20/112 cut-off events. [2024-11-10 18:26:06,892 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-10 18:26:06,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 112 events. 20/112 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 281 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 103. Up to 8 conditions per place. [2024-11-10 18:26:06,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 134 flow [2024-11-10 18:26:06,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 127 flow [2024-11-10 18:26:06,899 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:26:06,900 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;@2bf01ded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:26:06,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 18:26:06,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:26:06,903 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-10 18:26:06,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:26:06,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:06,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:06,905 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:06,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1599274657, now seen corresponding path program 1 times [2024-11-10 18:26:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256782927] [2024-11-10 18:26:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:06,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:06,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:06,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256782927] [2024-11-10 18:26:06,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256782927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:06,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:06,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:26:06,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777100549] [2024-11-10 18:26:06,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:06,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:26:06,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:06,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:26:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:26:06,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-10 18:26:06,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 127 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) [2024-11-10 18:26:06,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:06,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-10 18:26:06,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:11,173 INFO L124 PetriNetUnfolderBase]: 23832/33650 cut-off events. [2024-11-10 18:26:11,173 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-11-10 18:26:11,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65187 conditions, 33650 events. 23832/33650 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 1229. Compared 220156 event pairs, 23012 based on Foata normal form. 3280/35931 useless extension candidates. Maximal degree in co-relation 18927. Up to 30118 conditions per place. [2024-11-10 18:26:11,605 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 27 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-10 18:26:11,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 171 flow [2024-11-10 18:26:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:26:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:26:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-11-10 18:26:11,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-10 18:26:11,611 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 127 flow. Second operand 2 states and 63 transitions. [2024-11-10 18:26:11,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 171 flow [2024-11-10 18:26:11,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 166 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 18:26:11,636 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 112 flow [2024-11-10 18:26:11,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-11-10 18:26:11,640 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-10 18:26:11,640 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 112 flow [2024-11-10 18:26:11,641 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) [2024-11-10 18:26:11,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:11,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:11,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:26:11,641 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:11,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:11,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1201559623, now seen corresponding path program 1 times [2024-11-10 18:26:11,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:11,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408039769] [2024-11-10 18:26:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:11,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:11,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:11,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408039769] [2024-11-10 18:26:11,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408039769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:11,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:11,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:26:11,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298746530] [2024-11-10 18:26:11,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:11,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:26:11,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:11,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:26:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:26:11,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-10 18:26:11,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:11,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:11,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-10 18:26:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:14,965 INFO L124 PetriNetUnfolderBase]: 26975/37382 cut-off events. [2024-11-10 18:26:14,966 INFO L125 PetriNetUnfolderBase]: For 1243/1243 co-relation queries the response was YES. [2024-11-10 18:26:15,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72553 conditions, 37382 events. 26975/37382 cut-off events. For 1243/1243 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 237190 event pairs, 16712 based on Foata normal form. 0/35941 useless extension candidates. Maximal degree in co-relation 72545. Up to 34051 conditions per place. [2024-11-10 18:26:15,490 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 33 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-11-10 18:26:15,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 196 flow [2024-11-10 18:26:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:26:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:26:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-10 18:26:15,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-10 18:26:15,496 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 112 flow. Second operand 3 states and 81 transitions. [2024-11-10 18:26:15,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 196 flow [2024-11-10 18:26:15,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:26:15,502 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 124 flow [2024-11-10 18:26:15,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-10 18:26:15,503 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-10 18:26:15,504 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 124 flow [2024-11-10 18:26:15,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:15,504 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:15,504 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:15,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:26:15,504 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:15,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash -559342919, now seen corresponding path program 1 times [2024-11-10 18:26:15,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:15,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436981333] [2024-11-10 18:26:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:15,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:26:15,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:15,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436981333] [2024-11-10 18:26:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436981333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:15,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:26:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606902232] [2024-11-10 18:26:15,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:15,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:26:15,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:15,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:26:15,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:26:15,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-10 18:26:15,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:15,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:15,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-10 18:26:15,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:19,828 INFO L124 PetriNetUnfolderBase]: 30119/42209 cut-off events. [2024-11-10 18:26:19,829 INFO L125 PetriNetUnfolderBase]: For 1922/1922 co-relation queries the response was YES. [2024-11-10 18:26:19,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82540 conditions, 42209 events. 30119/42209 cut-off events. For 1922/1922 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 273759 event pairs, 26156 based on Foata normal form. 0/40751 useless extension candidates. Maximal degree in co-relation 82530. Up to 34075 conditions per place. [2024-11-10 18:26:20,346 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 39 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-10 18:26:20,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 234 flow [2024-11-10 18:26:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:26:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:26:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-10 18:26:20,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-11-10 18:26:20,348 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 124 flow. Second operand 4 states and 102 transitions. [2024-11-10 18:26:20,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 234 flow [2024-11-10 18:26:20,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:26:20,363 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 136 flow [2024-11-10 18:26:20,364 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=136, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2024-11-10 18:26:20,367 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-11-10 18:26:20,367 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 136 flow [2024-11-10 18:26:20,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:20,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:20,368 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:20,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:26:20,368 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:20,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:20,368 INFO L85 PathProgramCache]: Analyzing trace with hash 282469732, now seen corresponding path program 1 times [2024-11-10 18:26:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:20,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556889699] [2024-11-10 18:26:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:20,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 18:26:20,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:20,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556889699] [2024-11-10 18:26:20,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556889699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:20,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:20,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:26:20,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759167644] [2024-11-10 18:26:20,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:20,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:26:20,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:26:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:26:20,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-10 18:26:20,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:20,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:20,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-10 18:26:20,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:23,739 INFO L124 PetriNetUnfolderBase]: 26975/37697 cut-off events. [2024-11-10 18:26:23,740 INFO L125 PetriNetUnfolderBase]: For 6017/6107 co-relation queries the response was YES. [2024-11-10 18:26:23,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77700 conditions, 37697 events. 26975/37697 cut-off events. For 6017/6107 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 241647 event pairs, 26156 based on Foata normal form. 819/37472 useless extension candidates. Maximal degree in co-relation 77689. Up to 34075 conditions per place. [2024-11-10 18:26:24,301 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 27 selfloop transitions, 1 changer transitions 1/43 dead transitions. [2024-11-10 18:26:24,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 43 transitions, 192 flow [2024-11-10 18:26:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:26:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:26:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-10 18:26:24,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-11-10 18:26:24,307 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 136 flow. Second operand 3 states and 73 transitions. [2024-11-10 18:26:24,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 43 transitions, 192 flow [2024-11-10 18:26:24,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:26:24,506 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 130 flow [2024-11-10 18:26:24,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2024-11-10 18:26:24,507 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2024-11-10 18:26:24,508 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 130 flow [2024-11-10 18:26:24,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:24,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:24,508 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:24,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 18:26:24,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:24,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:24,509 INFO L85 PathProgramCache]: Analyzing trace with hash 282470573, now seen corresponding path program 1 times [2024-11-10 18:26:24,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:24,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837886573] [2024-11-10 18:26:24,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:24,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:26:24,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837886573] [2024-11-10 18:26:24,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837886573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:26:24,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491871009] [2024-11-10 18:26:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:24,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:26:24,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:26:24,679 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) [2024-11-10 18:26:24,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:26:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:24,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 18:26:24,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:26:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:26:25,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:26:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:26:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491871009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:26:25,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:26:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-10 18:26:25,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324171491] [2024-11-10 18:26:25,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:26:25,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 18:26:25,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:25,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 18:26:25,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:26:25,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-10 18:26:25,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 130 flow. Second operand has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:25,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:25,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-10 18:26:25,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:26:26,213 INFO L124 PetriNetUnfolderBase]: 10436/14282 cut-off events. [2024-11-10 18:26:26,214 INFO L125 PetriNetUnfolderBase]: For 2414/2414 co-relation queries the response was YES. [2024-11-10 18:26:26,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29643 conditions, 14282 events. 10436/14282 cut-off events. For 2414/2414 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 78125 event pairs, 1310 based on Foata normal form. 819/15007 useless extension candidates. Maximal degree in co-relation 29632. Up to 7290 conditions per place. [2024-11-10 18:26:26,320 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 49 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-10 18:26:26,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 266 flow [2024-11-10 18:26:26,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:26:26,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:26:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-10 18:26:26,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-11-10 18:26:26,322 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 130 flow. Second operand 6 states and 146 transitions. [2024-11-10 18:26:26,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 266 flow [2024-11-10 18:26:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:26:26,327 INFO L231 Difference]: Finished difference. Result has 53 places, 32 transitions, 109 flow [2024-11-10 18:26:26,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2024-11-10 18:26:26,327 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2024-11-10 18:26:26,328 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 109 flow [2024-11-10 18:26:26,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.125) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:26,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:26,328 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:26,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:26:26,532 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,SelfDestructingSolverStorable9 [2024-11-10 18:26:26,534 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:26,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash 391846022, now seen corresponding path program 1 times [2024-11-10 18:26:26,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:26,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785515409] [2024-11-10 18:26:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:26,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:26,547 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 18:26:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 18:26:26,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 18:26:26,560 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 18:26:26,560 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 18:26:26,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-10 18:26:26,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-10 18:26:26,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 18:26:26,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 18:26:26,561 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-10 18:26:26,561 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 18:26:26,561 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 18:26:26,583 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 18:26:26,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 57 transitions, 170 flow [2024-11-10 18:26:26,591 INFO L124 PetriNetUnfolderBase]: 25/142 cut-off events. [2024-11-10 18:26:26,591 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-10 18:26:26,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 142 events. 25/142 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 339 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 143. Up to 10 conditions per place. [2024-11-10 18:26:26,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 57 transitions, 170 flow [2024-11-10 18:26:26,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 55 transitions, 162 flow [2024-11-10 18:26:26,594 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:26:26,594 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;@2bf01ded, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:26:26,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 18:26:26,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:26:26,596 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-10 18:26:26,596 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:26:26,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:26:26,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:26:26,597 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 18:26:26,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:26:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash -308974113, now seen corresponding path program 1 times [2024-11-10 18:26:26,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:26:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645589960] [2024-11-10 18:26:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:26:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:26:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:26:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:26:26,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:26:26,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645589960] [2024-11-10 18:26:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645589960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:26:26,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:26:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:26:26,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415675065] [2024-11-10 18:26:26,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:26:26,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:26:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:26:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:26:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:26:26,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-11-10 18:26:26,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:26:26,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:26:26,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-11-10 18:26:26,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand