./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:24:19,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:24:19,231 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:24:19,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:24:19,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:24:19,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:24:19,273 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:24:19,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:24:19,274 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:24:19,275 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:24:19,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:24:19,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:24:19,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:24:19,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:24:19,278 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:24:19,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:24:19,279 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:24:19,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:24:19,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:24:19,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:24:19,283 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:24:19,284 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:24:19,284 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:24:19,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:24:19,285 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:24:19,285 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:24:19,285 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:24:19,285 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:24:19,285 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:24:19,286 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:24:19,286 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:24:19,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:24:19,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:24:19,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:24:19,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:24:19,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:24:19,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:24:19,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:24:19,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:24:19,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:24:19,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:24:19,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:24:19,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2024-11-09 10:24:19,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:24:19,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:24:19,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:24:19,654 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:24:19,654 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:24:19,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-11-09 10:24:21,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:24:21,446 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:24:21,447 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-11-09 10:24:21,460 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4820ab5ae/981bb03307284c6988fe3b7a66c685d3/FLAGedf433bde [2024-11-09 10:24:21,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4820ab5ae/981bb03307284c6988fe3b7a66c685d3 [2024-11-09 10:24:21,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:24:21,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:24:21,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:24:21,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:24:21,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:24:21,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:24:21" (1/1) ... [2024-11-09 10:24:21,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b081758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:21, skipping insertion in model container [2024-11-09 10:24:21,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:24:21" (1/1) ... [2024-11-09 10:24:21,547 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:24:21,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:24:21,913 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:24:21,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:24:22,010 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:24:22,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22 WrapperNode [2024-11-09 10:24:22,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:24:22,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:24:22,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:24:22,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:24:22,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,059 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 60 [2024-11-09 10:24:22,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:24:22,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:24:22,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:24:22,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:24:22,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,089 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]. [2024-11-09 10:24:22,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:24:22,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:24:22,112 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:24:22,112 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:24:22,113 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (1/1) ... [2024-11-09 10:24:22,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:24:22,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:24:22,141 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) [2024-11-09 10:24:22,144 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 [2024-11-09 10:24:22,178 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 10:24:22,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 10:24:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:24:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:24:22,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:24:22,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:24:22,181 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:24:22,284 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:24:22,285 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:24:22,395 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:24:22,395 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:24:22,483 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:24:22,483 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 10:24:22,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:24:22 BoogieIcfgContainer [2024-11-09 10:24:22,484 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:24:22,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:24:22,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:24:22,490 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:24:22,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:24:21" (1/3) ... [2024-11-09 10:24:22,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e549b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:24:22, skipping insertion in model container [2024-11-09 10:24:22,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:24:22" (2/3) ... [2024-11-09 10:24:22,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e549b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:24:22, skipping insertion in model container [2024-11-09 10:24:22,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:24:22" (3/3) ... [2024-11-09 10:24:22,494 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2024-11-09 10:24:22,512 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:24:22,512 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:24:22,513 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:24:22,568 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:22,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 25 transitions, 54 flow [2024-11-09 10:24:22,618 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-11-09 10:24:22,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:22,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 29 events. 4/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 22. Up to 3 conditions per place. [2024-11-09 10:24:22,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 25 transitions, 54 flow [2024-11-09 10:24:22,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 25 transitions, 54 flow [2024-11-09 10:24:22,633 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:22,642 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;@7860a8c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:22,642 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:24:22,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:22,646 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:22,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:22,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:22,647 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:22,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:24:22,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash 214270, now seen corresponding path program 1 times [2024-11-09 10:24:22,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:22,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346175421] [2024-11-09 10:24:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:22,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:22,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:22,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346175421] [2024-11-09 10:24:22,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346175421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:22,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:22,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827451717] [2024-11-09 10:24:22,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:22,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:22,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:22,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:22,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 25 [2024-11-09 10:24:22,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 25 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-09 10:24:22,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:22,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 25 [2024-11-09 10:24:22,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:22,966 INFO L124 PetriNetUnfolderBase]: 16/59 cut-off events. [2024-11-09 10:24:22,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:22,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 59 events. 16/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 159 event pairs, 10 based on Foata normal form. 6/56 useless extension candidates. Maximal degree in co-relation 81. Up to 31 conditions per place. [2024-11-09 10:24:22,970 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 9 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-09 10:24:22,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 60 flow [2024-11-09 10:24:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:22,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2024-11-09 10:24:22,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-11-09 10:24:22,984 INFO L175 Difference]: Start difference. First operand has 24 places, 25 transitions, 54 flow. Second operand 2 states and 34 transitions. [2024-11-09 10:24:22,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 60 flow [2024-11-09 10:24:22,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:22,989 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2024-11-09 10:24:22,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-11-09 10:24:22,996 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2024-11-09 10:24:22,996 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2024-11-09 10:24:22,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-11-09 10:24:22,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:22,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 10:24:22,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:24:22,997 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:24:22,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2088411740, now seen corresponding path program 1 times [2024-11-09 10:24:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986985089] [2024-11-09 10:24:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:23,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:23,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:24:23,069 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:23,071 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 10:24:23,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-09 10:24:23,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-09 10:24:23,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-09 10:24:23,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:24:23,074 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:24:23,076 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:24:23,077 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:24:23,104 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:23,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 43 transitions, 96 flow [2024-11-09 10:24:23,123 INFO L124 PetriNetUnfolderBase]: 8/52 cut-off events. [2024-11-09 10:24:23,124 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:24:23,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 52 events. 8/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2024-11-09 10:24:23,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 43 transitions, 96 flow [2024-11-09 10:24:23,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 43 transitions, 96 flow [2024-11-09 10:24:23,128 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:23,129 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;@7860a8c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:23,129 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 10:24:23,133 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:23,133 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:23,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:23,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:23,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:23,134 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:24:23,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash 256969, now seen corresponding path program 1 times [2024-11-09 10:24:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:23,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121887827] [2024-11-09 10:24:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:23,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:23,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121887827] [2024-11-09 10:24:23,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121887827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:23,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:23,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999059351] [2024-11-09 10:24:23,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:23,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:23,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:23,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:23,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 43 [2024-11-09 10:24:23,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 96 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) [2024-11-09 10:24:23,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:23,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 43 [2024-11-09 10:24:23,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:23,293 INFO L124 PetriNetUnfolderBase]: 202/480 cut-off events. [2024-11-09 10:24:23,297 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 10:24:23,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 480 events. 202/480 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2435 event pairs, 160 based on Foata normal form. 54/462 useless extension candidates. Maximal degree in co-relation 432. Up to 289 conditions per place. [2024-11-09 10:24:23,304 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 15 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-09 10:24:23,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 108 flow [2024-11-09 10:24:23,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-11-09 10:24:23,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2024-11-09 10:24:23,308 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 96 flow. Second operand 2 states and 60 transitions. [2024-11-09 10:24:23,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 108 flow [2024-11-09 10:24:23,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:23,311 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 78 flow [2024-11-09 10:24:23,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=78, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-11-09 10:24:23,312 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-09 10:24:23,312 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 78 flow [2024-11-09 10:24:23,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:23,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:23,313 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-09 10:24:23,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:24:23,313 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:24:23,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash -818352428, now seen corresponding path program 1 times [2024-11-09 10:24:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:23,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561827850] [2024-11-09 10:24:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:23,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:23,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:24:23,361 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:23,361 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 10:24:23,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-09 10:24:23,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-09 10:24:23,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-09 10:24:23,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-09 10:24:23,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:24:23,364 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:24:23,364 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:24:23,365 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:24:23,393 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:23,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 61 transitions, 140 flow [2024-11-09 10:24:23,408 INFO L124 PetriNetUnfolderBase]: 12/75 cut-off events. [2024-11-09 10:24:23,409 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:24:23,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 75 events. 12/75 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 234 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2024-11-09 10:24:23,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 61 transitions, 140 flow [2024-11-09 10:24:23,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 61 transitions, 140 flow [2024-11-09 10:24:23,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:23,414 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;@7860a8c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:23,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 10:24:23,415 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:23,416 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:23,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:23,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:23,416 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:23,416 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:24:23,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:23,417 INFO L85 PathProgramCache]: Analyzing trace with hash 317542, now seen corresponding path program 1 times [2024-11-09 10:24:23,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:23,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572901710] [2024-11-09 10:24:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:23,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:23,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572901710] [2024-11-09 10:24:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572901710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:23,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:23,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:23,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988750542] [2024-11-09 10:24:23,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:23,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:23,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:23,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:23,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 61 [2024-11-09 10:24:23,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 140 flow. Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2024-11-09 10:24:23,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:23,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 61 [2024-11-09 10:24:23,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:23,911 INFO L124 PetriNetUnfolderBase]: 1852/3525 cut-off events. [2024-11-09 10:24:23,912 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-11-09 10:24:23,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6070 conditions, 3525 events. 1852/3525 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 23504 event pairs, 1600 based on Foata normal form. 528/3609 useless extension candidates. Maximal degree in co-relation 981. Up to 2377 conditions per place. [2024-11-09 10:24:23,942 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 21 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-11-09 10:24:23,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 158 flow [2024-11-09 10:24:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 86 transitions. [2024-11-09 10:24:23,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7049180327868853 [2024-11-09 10:24:23,946 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 140 flow. Second operand 2 states and 86 transitions. [2024-11-09 10:24:23,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 158 flow [2024-11-09 10:24:23,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 156 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:23,950 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 114 flow [2024-11-09 10:24:23,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-09 10:24:23,951 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-11-09 10:24:23,952 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 114 flow [2024-11-09 10:24:23,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2024-11-09 10:24:23,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:23,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:23,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:24:23,954 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:24:23,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1682543187, now seen corresponding path program 1 times [2024-11-09 10:24:23,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:23,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972863794] [2024-11-09 10:24:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:23,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:24,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972863794] [2024-11-09 10:24:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972863794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:24,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:24,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:24:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338429200] [2024-11-09 10:24:24,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:24,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:24:24,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:24,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:24:24,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:24:24,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2024-11-09 10:24:24,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-11-09 10:24:24,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:24,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2024-11-09 10:24:24,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:24,611 INFO L124 PetriNetUnfolderBase]: 3454/5970 cut-off events. [2024-11-09 10:24:24,611 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-11-09 10:24:24,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11108 conditions, 5970 events. 3454/5970 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40810 event pairs, 736 based on Foata normal form. 0/5619 useless extension candidates. Maximal degree in co-relation 11102. Up to 2085 conditions per place. [2024-11-09 10:24:24,656 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 52 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-09 10:24:24,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 302 flow [2024-11-09 10:24:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:24:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:24:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-09 10:24:24,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6229508196721312 [2024-11-09 10:24:24,660 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 114 flow. Second operand 4 states and 152 transitions. [2024-11-09 10:24:24,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 302 flow [2024-11-09 10:24:24,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 302 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:24,665 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 118 flow [2024-11-09 10:24:24,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-09 10:24:24,667 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-09 10:24:24,670 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 118 flow [2024-11-09 10:24:24,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2024-11-09 10:24:24,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:24,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:24,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:24:24,671 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:24:24,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1681560084, now seen corresponding path program 1 times [2024-11-09 10:24:24,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:24,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795023590] [2024-11-09 10:24:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:24,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:24,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:24,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795023590] [2024-11-09 10:24:24,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795023590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:24,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:24,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:24:24,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501894492] [2024-11-09 10:24:24,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:24,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:24:24,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:24:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:24:24,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-09 10:24:24,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-11-09 10:24:24,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:24,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-09 10:24:24,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:25,346 INFO L124 PetriNetUnfolderBase]: 3454/5454 cut-off events. [2024-11-09 10:24:25,347 INFO L125 PetriNetUnfolderBase]: For 395/395 co-relation queries the response was YES. [2024-11-09 10:24:25,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10851 conditions, 5454 events. 3454/5454 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 32866 event pairs, 736 based on Foata normal form. 129/5340 useless extension candidates. Maximal degree in co-relation 10844. Up to 2085 conditions per place. [2024-11-09 10:24:25,391 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 53 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-09 10:24:25,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 298 flow [2024-11-09 10:24:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:24:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:24:25,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-11-09 10:24:25,396 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-11-09 10:24:25,396 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 118 flow. Second operand 4 states and 148 transitions. [2024-11-09 10:24:25,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 298 flow [2024-11-09 10:24:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:24:25,401 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 109 flow [2024-11-09 10:24:25,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-09 10:24:25,402 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-11-09 10:24:25,403 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 109 flow [2024-11-09 10:24:25,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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) [2024-11-09 10:24:25,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:25,404 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-09 10:24:25,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:24:25,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:24:25,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash 256161979, now seen corresponding path program 1 times [2024-11-09 10:24:25,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:25,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508186416] [2024-11-09 10:24:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:25,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:25,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:25,435 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:24:25,438 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:25,438 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 10:24:25,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-09 10:24:25,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-09 10:24:25,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-09 10:24:25,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-09 10:24:25,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-09 10:24:25,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:24:25,443 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 10:24:25,444 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:24:25,444 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 10:24:25,474 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:25,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 79 transitions, 186 flow [2024-11-09 10:24:25,490 INFO L124 PetriNetUnfolderBase]: 16/98 cut-off events. [2024-11-09 10:24:25,491 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:24:25,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 98 events. 16/98 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 307 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 87. Up to 5 conditions per place. [2024-11-09 10:24:25,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 79 transitions, 186 flow [2024-11-09 10:24:25,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 79 transitions, 186 flow [2024-11-09 10:24:25,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:25,498 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;@7860a8c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:25,499 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 10:24:25,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:25,502 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:25,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:25,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:25,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:25,502 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:24:25,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash 395989, now seen corresponding path program 1 times [2024-11-09 10:24:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:25,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921971462] [2024-11-09 10:24:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:25,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:25,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921971462] [2024-11-09 10:24:25,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921971462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:25,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:25,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:25,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478011999] [2024-11-09 10:24:25,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:25,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:25,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:25,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2024-11-09 10:24:25,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:25,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:25,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2024-11-09 10:24:25,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:27,936 INFO L124 PetriNetUnfolderBase]: 14992/25038 cut-off events. [2024-11-09 10:24:27,937 INFO L125 PetriNetUnfolderBase]: For 2861/2861 co-relation queries the response was YES. [2024-11-09 10:24:28,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44432 conditions, 25038 events. 14992/25038 cut-off events. For 2861/2861 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 196485 event pairs, 13480 based on Foata normal form. 4682/27047 useless extension candidates. Maximal degree in co-relation 6108. Up to 18145 conditions per place. [2024-11-09 10:24:28,177 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 27 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-11-09 10:24:28,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 210 flow [2024-11-09 10:24:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 112 transitions. [2024-11-09 10:24:28,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7088607594936709 [2024-11-09 10:24:28,180 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 186 flow. Second operand 2 states and 112 transitions. [2024-11-09 10:24:28,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 210 flow [2024-11-09 10:24:28,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 204 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:28,188 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 150 flow [2024-11-09 10:24:28,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-11-09 10:24:28,191 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2024-11-09 10:24:28,191 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 150 flow [2024-11-09 10:24:28,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:24:28,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:28,191 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:28,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:24:28,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:24:28,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash -22327251, now seen corresponding path program 1 times [2024-11-09 10:24:28,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:28,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555413926] [2024-11-09 10:24:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:28,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:28,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:28,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555413926] [2024-11-09 10:24:28,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555413926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:28,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:28,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:24:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317771791] [2024-11-09 10:24:28,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:28,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:24:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:24:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:24:28,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-09 10:24:28,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-09 10:24:28,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:28,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-09 10:24:28,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:31,795 INFO L124 PetriNetUnfolderBase]: 28492/43617 cut-off events. [2024-11-09 10:24:31,796 INFO L125 PetriNetUnfolderBase]: For 1790/1790 co-relation queries the response was YES. [2024-11-09 10:24:31,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82236 conditions, 43617 events. 28492/43617 cut-off events. For 1790/1790 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 335685 event pairs, 6352 based on Foata normal form. 0/41465 useless extension candidates. Maximal degree in co-relation 82229. Up to 15765 conditions per place. [2024-11-09 10:24:32,432 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 70 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2024-11-09 10:24:32,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 408 flow [2024-11-09 10:24:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:24:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:24:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-11-09 10:24:32,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518987341772152 [2024-11-09 10:24:32,436 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 150 flow. Second operand 4 states and 206 transitions. [2024-11-09 10:24:32,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 408 flow [2024-11-09 10:24:32,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:32,447 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 154 flow [2024-11-09 10:24:32,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-09 10:24:32,448 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2024-11-09 10:24:32,448 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 154 flow [2024-11-09 10:24:32,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2024-11-09 10:24:32,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:32,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:32,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:24:32,449 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:24:32,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:32,450 INFO L85 PathProgramCache]: Analyzing trace with hash -21344148, now seen corresponding path program 1 times [2024-11-09 10:24:32,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:32,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699206429] [2024-11-09 10:24:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:32,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:32,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:32,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699206429] [2024-11-09 10:24:32,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699206429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:32,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:32,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:24:32,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36191741] [2024-11-09 10:24:32,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:32,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:24:32,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:32,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:24:32,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:24:32,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-11-09 10:24:32,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2024-11-09 10:24:32,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:32,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-11-09 10:24:32,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:35,221 INFO L124 PetriNetUnfolderBase]: 28492/40509 cut-off events. [2024-11-09 10:24:35,221 INFO L125 PetriNetUnfolderBase]: For 2564/2564 co-relation queries the response was YES. [2024-11-09 10:24:35,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80683 conditions, 40509 events. 28492/40509 cut-off events. For 2564/2564 co-relation queries the response was YES. Maximal size of possible extension queue 1489. Compared 273522 event pairs, 6352 based on Foata normal form. 777/39785 useless extension candidates. Maximal degree in co-relation 80675. Up to 15765 conditions per place. [2024-11-09 10:24:35,563 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 71 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-11-09 10:24:35,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 404 flow [2024-11-09 10:24:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:24:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:24:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-11-09 10:24:35,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392405063291139 [2024-11-09 10:24:35,565 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 154 flow. Second operand 4 states and 202 transitions. [2024-11-09 10:24:35,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 404 flow [2024-11-09 10:24:35,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:24:35,577 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 145 flow [2024-11-09 10:24:35,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-09 10:24:35,579 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2024-11-09 10:24:35,579 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 145 flow [2024-11-09 10:24:35,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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) [2024-11-09 10:24:35,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:35,581 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:35,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:24:35,581 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:24:35,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1610535367, now seen corresponding path program 1 times [2024-11-09 10:24:35,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:35,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082918331] [2024-11-09 10:24:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:35,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:24:35,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:35,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082918331] [2024-11-09 10:24:35,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082918331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:35,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:35,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:24:35,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620547810] [2024-11-09 10:24:35,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:35,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:24:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:24:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:24:35,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-11-09 10:24:35,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-09 10:24:35,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:35,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-11-09 10:24:35,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:39,399 INFO L124 PetriNetUnfolderBase]: 38482/58644 cut-off events. [2024-11-09 10:24:39,399 INFO L125 PetriNetUnfolderBase]: For 3974/3974 co-relation queries the response was YES. [2024-11-09 10:24:39,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112141 conditions, 58644 events. 38482/58644 cut-off events. For 3974/3974 co-relation queries the response was YES. Maximal size of possible extension queue 2439. Compared 467029 event pairs, 8611 based on Foata normal form. 0/54282 useless extension candidates. Maximal degree in co-relation 112133. Up to 21195 conditions per place. [2024-11-09 10:24:39,930 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 68 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-11-09 10:24:39,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 98 transitions, 389 flow [2024-11-09 10:24:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:24:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:24:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-11-09 10:24:39,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6455696202531646 [2024-11-09 10:24:39,932 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 145 flow. Second operand 4 states and 204 transitions. [2024-11-09 10:24:39,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 98 transitions, 389 flow [2024-11-09 10:24:39,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:24:39,943 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 146 flow [2024-11-09 10:24:39,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-11-09 10:24:39,944 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2024-11-09 10:24:39,944 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 146 flow [2024-11-09 10:24:39,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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) [2024-11-09 10:24:39,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:39,945 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:39,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:24:39,945 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:24:39,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:39,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1611518470, now seen corresponding path program 1 times [2024-11-09 10:24:39,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:39,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783723388] [2024-11-09 10:24:39,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:39,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:24:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783723388] [2024-11-09 10:24:39,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783723388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:39,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:39,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:24:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278892834] [2024-11-09 10:24:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:39,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:24:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:24:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:24:40,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 79 [2024-11-09 10:24:40,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-09 10:24:40,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:40,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 79 [2024-11-09 10:24:40,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:43,042 INFO L124 PetriNetUnfolderBase]: 38482/54516 cut-off events. [2024-11-09 10:24:43,043 INFO L125 PetriNetUnfolderBase]: For 3440/3440 co-relation queries the response was YES. [2024-11-09 10:24:43,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108526 conditions, 54516 events. 38482/54516 cut-off events. For 3440/3440 co-relation queries the response was YES. Maximal size of possible extension queue 2132. Compared 381753 event pairs, 8611 based on Foata normal form. 1032/52044 useless extension candidates. Maximal degree in co-relation 108518. Up to 21195 conditions per place. [2024-11-09 10:24:43,660 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 69 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-11-09 10:24:43,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 94 transitions, 378 flow [2024-11-09 10:24:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:24:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:24:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-11-09 10:24:43,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6329113924050633 [2024-11-09 10:24:43,662 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 146 flow. Second operand 4 states and 200 transitions. [2024-11-09 10:24:43,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 94 transitions, 378 flow [2024-11-09 10:24:43,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:24:43,677 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 137 flow [2024-11-09 10:24:43,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-11-09 10:24:43,678 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-11-09 10:24:43,678 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 137 flow [2024-11-09 10:24:43,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-11-09 10:24:43,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:43,679 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:43,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:24:43,679 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:24:43,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash -860175743, now seen corresponding path program 1 times [2024-11-09 10:24:43,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:43,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869905311] [2024-11-09 10:24:43,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:43,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:43,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:24:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:24:43,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:24:43,700 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:24:43,701 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-09 10:24:43,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-09 10:24:43,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-09 10:24:43,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-09 10:24:43,701 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-09 10:24:43,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-09 10:24:43,702 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-09 10:24:43,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:24:43,702 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-09 10:24:43,703 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:24:43,703 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 10:24:43,734 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:24:43,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 97 transitions, 234 flow [2024-11-09 10:24:43,748 INFO L124 PetriNetUnfolderBase]: 20/121 cut-off events. [2024-11-09 10:24:43,748 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 10:24:43,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 121 events. 20/121 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 404 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 116. Up to 6 conditions per place. [2024-11-09 10:24:43,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 97 transitions, 234 flow [2024-11-09 10:24:43,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 97 transitions, 234 flow [2024-11-09 10:24:43,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:24:43,752 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;@7860a8c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:24:43,752 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-09 10:24:43,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:24:43,754 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:24:43,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:24:43,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:43,754 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:24:43,754 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-09 10:24:43,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash 492310, now seen corresponding path program 1 times [2024-11-09 10:24:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:43,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795860524] [2024-11-09 10:24:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:43,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:43,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795860524] [2024-11-09 10:24:43,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795860524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:43,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:43,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:24:43,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925007652] [2024-11-09 10:24:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:43,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:24:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:24:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:24:43,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-11-09 10:24:43,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 234 flow. Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2024-11-09 10:24:43,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:43,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-11-09 10:24:43,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:24:56,845 INFO L124 PetriNetUnfolderBase]: 113272/173556 cut-off events. [2024-11-09 10:24:56,846 INFO L125 PetriNetUnfolderBase]: For 26713/26713 co-relation queries the response was YES. [2024-11-09 10:24:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314775 conditions, 173556 events. 113272/173556 cut-off events. For 26713/26713 co-relation queries the response was YES. Maximal size of possible extension queue 6112. Compared 1518615 event pairs, 104200 based on Foata normal form. 37383/194892 useless extension candidates. Maximal degree in co-relation 44685. Up to 132193 conditions per place. [2024-11-09 10:24:58,894 INFO L140 encePairwiseOnDemand]: 86/97 looper letters, 33 selfloop transitions, 0 changer transitions 0/79 dead transitions. [2024-11-09 10:24:58,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 264 flow [2024-11-09 10:24:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:24:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:24:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 138 transitions. [2024-11-09 10:24:58,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.711340206185567 [2024-11-09 10:24:58,896 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 234 flow. Second operand 2 states and 138 transitions. [2024-11-09 10:24:58,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 264 flow [2024-11-09 10:24:58,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 252 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-09 10:24:58,910 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 186 flow [2024-11-09 10:24:58,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=186, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-11-09 10:24:58,910 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -7 predicate places. [2024-11-09 10:24:58,911 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 186 flow [2024-11-09 10:24:58,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2024-11-09 10:24:58,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:24:58,911 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:24:58,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:24:58,911 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-09 10:24:58,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:24:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1962836353, now seen corresponding path program 1 times [2024-11-09 10:24:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:24:58,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932621308] [2024-11-09 10:24:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:24:58,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:24:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:24:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:24:58,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:24:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932621308] [2024-11-09 10:24:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932621308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:24:58,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:24:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:24:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037647453] [2024-11-09 10:24:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:24:58,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:24:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:24:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:24:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:24:58,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-11-09 10:24:58,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-11-09 10:24:58,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:24:58,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-11-09 10:24:58,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand