./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.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 a50cd99e32ae608752174b749acce795b64973c8c13edb78d7146b3ab3630fc9 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:24:31,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:24:31,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:24:31,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:24:31,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:24:31,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:24:31,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:24:31,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:24:31,706 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:24:31,707 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:24:31,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:24:31,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:24:31,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:24:31,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:24:31,710 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:24:31,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:24:31,711 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:24:31,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:24:31,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:24:31,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:24:31,712 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:24:31,713 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:24:31,713 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:24:31,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:24:31,713 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:24:31,714 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:24:31,714 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:24:31,718 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:24:31,718 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:24:31,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:24:31,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:24:31,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:24:31,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:24:31,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:24:31,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:24:31,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:24:31,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:24:31,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:24:31,720 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:24:31,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:24:31,720 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:24:31,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:24:31,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50cd99e32ae608752174b749acce795b64973c8c13edb78d7146b3ab3630fc9 [2024-10-14 19:24:31,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:24:31,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:24:31,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:24:31,987 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:24:31,987 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:24:31,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-10-14 19:24:33,415 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:24:33,662 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:24:33,662 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-10-14 19:24:33,676 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d9327a0/6b2ac03fb1b348408b9ea8f624443f54/FLAGcb1f8c2b8 [2024-10-14 19:24:33,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d9327a0/6b2ac03fb1b348408b9ea8f624443f54 [2024-10-14 19:24:33,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:24:33,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:24:33,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:24:33,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:24:33,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:24:33,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:24:33" (1/1) ... [2024-10-14 19:24:33,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6786f02c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:33, skipping insertion in model container [2024-10-14 19:24:33,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:24:33" (1/1) ... [2024-10-14 19:24:33,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:24:34,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:24:34,110 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:24:34,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:24:34,198 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:24:34,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34 WrapperNode [2024-10-14 19:24:34,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:24:34,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:24:34,200 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:24:34,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:24:34,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,238 INFO L138 Inliner]: procedures = 171, calls = 17, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 61 [2024-10-14 19:24:34,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:24:34,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:24:34,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:24:34,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:24:34,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,251 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,263 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]. [2024-10-14 19:24:34,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:24:34,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:24:34,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:24:34,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:24:34,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (1/1) ... [2024-10-14 19:24:34,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:24:34,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:34,318 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) [2024-10-14 19:24:34,322 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 [2024-10-14 19:24:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 19:24:34,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 19:24:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:24:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:24:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:24:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:24:34,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:24:34,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:24:34,370 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:24:34,464 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:24:34,465 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:24:34,582 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:24:34,582 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:24:34,669 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:24:34,669 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 19:24:34,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:24:34 BoogieIcfgContainer [2024-10-14 19:24:34,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:24:34,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:24:34,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:24:34,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:24:34,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:24:33" (1/3) ... [2024-10-14 19:24:34,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acede9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:24:34, skipping insertion in model container [2024-10-14 19:24:34,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:24:34" (2/3) ... [2024-10-14 19:24:34,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3acede9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:24:34, skipping insertion in model container [2024-10-14 19:24:34,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:24:34" (3/3) ... [2024-10-14 19:24:34,680 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-10-14 19:24:34,696 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:24:34,696 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:24:34,696 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:24:34,734 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:24:34,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 20 transitions, 44 flow [2024-10-14 19:24:34,793 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-10-14 19:24:34,793 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:24:34,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 1/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 38 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-10-14 19:24:34,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 20 transitions, 44 flow [2024-10-14 19:24:34,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 20 transitions, 44 flow [2024-10-14 19:24:34,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:24:34,832 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;@b31777c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:24:34,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:24:34,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:24:34,841 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:24:34,841 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:24:34,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:34,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:24:34,842 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)] === [2024-10-14 19:24:34,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 216101, now seen corresponding path program 1 times [2024-10-14 19:24:34,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:34,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774556278] [2024-10-14 19:24:34,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:34,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774556278] [2024-10-14 19:24:35,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774556278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:24:35,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:24:35,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:24:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363446251] [2024-10-14 19:24:35,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:24:35,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:24:35,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:24:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:24:35,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 20 [2024-10-14 19:24:35,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-10-14 19:24:35,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:35,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 20 [2024-10-14 19:24:35,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:35,129 INFO L124 PetriNetUnfolderBase]: 17/56 cut-off events. [2024-10-14 19:24:35,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:24:35,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 56 events. 17/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 149 event pairs, 14 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 89. Up to 41 conditions per place. [2024-10-14 19:24:35,132 INFO L140 encePairwiseOnDemand]: 19/20 looper letters, 11 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2024-10-14 19:24:35,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 17 transitions, 60 flow [2024-10-14 19:24:35,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:24:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:24:35,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2024-10-14 19:24:35,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 19:24:35,147 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 44 flow. Second operand 2 states and 26 transitions. [2024-10-14 19:24:35,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 17 transitions, 60 flow [2024-10-14 19:24:35,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 60 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:24:35,153 INFO L231 Difference]: Finished difference. Result has 20 places, 17 transitions, 38 flow [2024-10-14 19:24:35,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2024-10-14 19:24:35,161 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2024-10-14 19:24:35,162 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 38 flow [2024-10-14 19:24:35,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-10-14 19:24:35,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:35,163 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 19:24:35,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:24:35,163 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)] === [2024-10-14 19:24:35,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2142750426, now seen corresponding path program 1 times [2024-10-14 19:24:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:35,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492364548] [2024-10-14 19:24:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:35,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:24:35,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:24:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:24:35,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:24:35,260 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:24:35,262 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-14 19:24:35,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-14 19:24:35,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-10-14 19:24:35,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-10-14 19:24:35,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:24:35,269 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 19:24:35,273 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:24:35,273 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 19:24:35,305 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:24:35,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 33 transitions, 76 flow [2024-10-14 19:24:35,347 INFO L124 PetriNetUnfolderBase]: 2/42 cut-off events. [2024-10-14 19:24:35,348 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:24:35,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 42 events. 2/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 109 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2024-10-14 19:24:35,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 33 transitions, 76 flow [2024-10-14 19:24:35,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 76 flow [2024-10-14 19:24:35,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:24:35,354 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;@b31777c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:24:35,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-14 19:24:35,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:24:35,360 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:24:35,360 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:24:35,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:35,361 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:24:35,361 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)] === [2024-10-14 19:24:35,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash 248870, now seen corresponding path program 1 times [2024-10-14 19:24:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:35,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387815706] [2024-10-14 19:24:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:35,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:35,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:35,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387815706] [2024-10-14 19:24:35,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387815706] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:24:35,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:24:35,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:24:35,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992641331] [2024-10-14 19:24:35,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:24:35,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:24:35,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:35,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:24:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:24:35,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-10-14 19:24:35,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:35,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:35,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-10-14 19:24:35,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:35,578 INFO L124 PetriNetUnfolderBase]: 315/672 cut-off events. [2024-10-14 19:24:35,579 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-14 19:24:35,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 672 events. 315/672 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3561 event pairs, 294 based on Foata normal form. 0/611 useless extension candidates. Maximal degree in co-relation 707. Up to 513 conditions per place. [2024-10-14 19:24:35,592 INFO L140 encePairwiseOnDemand]: 32/33 looper letters, 19 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2024-10-14 19:24:35,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 108 flow [2024-10-14 19:24:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:24:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:24:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2024-10-14 19:24:35,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-14 19:24:35,595 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 76 flow. Second operand 2 states and 44 transitions. [2024-10-14 19:24:35,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 108 flow [2024-10-14 19:24:35,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:24:35,598 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 70 flow [2024-10-14 19:24:35,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-10-14 19:24:35,599 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-10-14 19:24:35,599 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 70 flow [2024-10-14 19:24:35,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:35,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:35,600 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-14 19:24:35,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:24:35,600 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)] === [2024-10-14 19:24:35,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1294424059, now seen corresponding path program 1 times [2024-10-14 19:24:35,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:35,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703010709] [2024-10-14 19:24:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:24:35,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:24:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:24:35,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:24:35,653 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:24:35,653 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-14 19:24:35,653 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-14 19:24:35,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-14 19:24:35,654 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-10-14 19:24:35,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-14 19:24:35,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:24:35,658 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 19:24:35,659 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:24:35,659 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 19:24:35,695 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:24:35,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 46 transitions, 110 flow [2024-10-14 19:24:35,708 INFO L124 PetriNetUnfolderBase]: 3/60 cut-off events. [2024-10-14 19:24:35,709 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 19:24:35,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 60 events. 3/60 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 184 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2024-10-14 19:24:35,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 46 transitions, 110 flow [2024-10-14 19:24:35,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 46 transitions, 110 flow [2024-10-14 19:24:35,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:24:35,713 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;@b31777c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:24:35,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-14 19:24:35,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:24:35,715 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:24:35,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:24:35,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:35,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:24:35,716 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)] === [2024-10-14 19:24:35,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash 294548, now seen corresponding path program 1 times [2024-10-14 19:24:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055309329] [2024-10-14 19:24:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055309329] [2024-10-14 19:24:35,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055309329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:24:35,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:24:35,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:24:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181854862] [2024-10-14 19:24:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:24:35,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:24:35,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:24:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:24:35,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-10-14 19:24:35,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:35,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:35,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-10-14 19:24:35,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:36,388 INFO L124 PetriNetUnfolderBase]: 4043/6970 cut-off events. [2024-10-14 19:24:36,392 INFO L125 PetriNetUnfolderBase]: For 464/464 co-relation queries the response was YES. [2024-10-14 19:24:36,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12889 conditions, 6970 events. 4043/6970 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 48408 event pairs, 3878 based on Foata normal form. 0/6255 useless extension candidates. Maximal degree in co-relation 2611. Up to 5633 conditions per place. [2024-10-14 19:24:36,439 INFO L140 encePairwiseOnDemand]: 45/46 looper letters, 27 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-10-14 19:24:36,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 158 flow [2024-10-14 19:24:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:24:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:24:36,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-10-14 19:24:36,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-10-14 19:24:36,442 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 110 flow. Second operand 2 states and 62 transitions. [2024-10-14 19:24:36,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 158 flow [2024-10-14 19:24:36,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 156 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 19:24:36,447 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 102 flow [2024-10-14 19:24:36,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-10-14 19:24:36,448 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2024-10-14 19:24:36,449 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 102 flow [2024-10-14 19:24:36,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:36,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:36,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:36,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:24:36,450 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-14 19:24:36,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:36,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2010158246, now seen corresponding path program 1 times [2024-10-14 19:24:36,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:36,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856265808] [2024-10-14 19:24:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:36,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:36,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:36,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856265808] [2024-10-14 19:24:36,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856265808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:24:36,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:24:36,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:24:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852166238] [2024-10-14 19:24:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:24:36,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:24:36,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:24:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:24:36,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-10-14 19:24:36,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-14 19:24:36,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:36,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-10-14 19:24:36,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:38,066 INFO L124 PetriNetUnfolderBase]: 9507/16241 cut-off events. [2024-10-14 19:24:38,066 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-10-14 19:24:38,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30276 conditions, 16241 events. 9507/16241 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 124554 event pairs, 2493 based on Foata normal form. 0/13946 useless extension candidates. Maximal degree in co-relation 30270. Up to 5955 conditions per place. [2024-10-14 19:24:38,261 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 97 selfloop transitions, 12 changer transitions 0/119 dead transitions. [2024-10-14 19:24:38,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 119 transitions, 502 flow [2024-10-14 19:24:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:24:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:24:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-10-14 19:24:38,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6557971014492754 [2024-10-14 19:24:38,266 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 102 flow. Second operand 6 states and 181 transitions. [2024-10-14 19:24:38,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 119 transitions, 502 flow [2024-10-14 19:24:38,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 119 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:24:38,274 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 193 flow [2024-10-14 19:24:38,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-10-14 19:24:38,276 INFO L277 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2024-10-14 19:24:38,276 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 193 flow [2024-10-14 19:24:38,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-10-14 19:24:38,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:38,277 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-14 19:24:38,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:24:38,277 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-14 19:24:38,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1572710471, now seen corresponding path program 1 times [2024-10-14 19:24:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:38,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064128538] [2024-10-14 19:24:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:24:38,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:24:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:24:38,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:24:38,315 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:24:38,315 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-14 19:24:38,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-14 19:24:38,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-14 19:24:38,316 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-10-14 19:24:38,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-14 19:24:38,317 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-14 19:24:38,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 19:24:38,317 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 19:24:38,318 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:24:38,318 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 19:24:38,348 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:24:38,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 146 flow [2024-10-14 19:24:38,357 INFO L124 PetriNetUnfolderBase]: 4/78 cut-off events. [2024-10-14 19:24:38,358 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 19:24:38,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 78 events. 4/78 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 258 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 72. Up to 5 conditions per place. [2024-10-14 19:24:38,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 59 transitions, 146 flow [2024-10-14 19:24:38,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 59 transitions, 146 flow [2024-10-14 19:24:38,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:24:38,362 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;@b31777c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:24:38,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 19:24:38,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:24:38,363 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:24:38,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:24:38,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:38,363 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:24:38,364 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)] === [2024-10-14 19:24:38,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:38,364 INFO L85 PathProgramCache]: Analyzing trace with hash 353135, now seen corresponding path program 1 times [2024-10-14 19:24:38,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:38,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336620592] [2024-10-14 19:24:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:38,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:38,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:38,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336620592] [2024-10-14 19:24:38,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336620592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:24:38,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:24:38,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:24:38,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202654072] [2024-10-14 19:24:38,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:24:38,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:24:38,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:24:38,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:24:38,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 59 [2024-10-14 19:24:38,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-10-14 19:24:38,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:38,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 59 [2024-10-14 19:24:38,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:43,605 INFO L124 PetriNetUnfolderBase]: 44619/68114 cut-off events. [2024-10-14 19:24:43,605 INFO L125 PetriNetUnfolderBase]: For 6570/6570 co-relation queries the response was YES. [2024-10-14 19:24:43,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128306 conditions, 68114 events. 44619/68114 cut-off events. For 6570/6570 co-relation queries the response was YES. Maximal size of possible extension queue 2711. Compared 542411 event pairs, 43302 based on Foata normal form. 0/60631 useless extension candidates. Maximal degree in co-relation 12957. Up to 57345 conditions per place. [2024-10-14 19:24:44,108 INFO L140 encePairwiseOnDemand]: 58/59 looper letters, 35 selfloop transitions, 0 changer transitions 0/56 dead transitions. [2024-10-14 19:24:44,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 210 flow [2024-10-14 19:24:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:24:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:24:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-10-14 19:24:44,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2024-10-14 19:24:44,113 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 146 flow. Second operand 2 states and 80 transitions. [2024-10-14 19:24:44,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 210 flow [2024-10-14 19:24:44,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 204 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 19:24:44,123 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 134 flow [2024-10-14 19:24:44,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-10-14 19:24:44,124 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2024-10-14 19:24:44,125 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 134 flow [2024-10-14 19:24:44,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-10-14 19:24:44,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:44,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:44,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 19:24:44,126 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 19:24:44,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:44,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1115168019, now seen corresponding path program 1 times [2024-10-14 19:24:44,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:44,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952964171] [2024-10-14 19:24:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:44,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952964171] [2024-10-14 19:24:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952964171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:24:44,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:24:44,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:24:44,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702636490] [2024-10-14 19:24:44,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:24:44,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:24:44,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:44,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:24:44,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:24:44,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2024-10-14 19:24:44,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2024-10-14 19:24:44,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:44,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2024-10-14 19:24:44,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:57,295 INFO L124 PetriNetUnfolderBase]: 154743/231464 cut-off events. [2024-10-14 19:24:57,296 INFO L125 PetriNetUnfolderBase]: For 4373/4373 co-relation queries the response was YES. [2024-10-14 19:24:57,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437116 conditions, 231464 events. 154743/231464 cut-off events. For 4373/4373 co-relation queries the response was YES. Maximal size of possible extension queue 8286. Compared 1976091 event pairs, 47541 based on Foata normal form. 0/194573 useless extension candidates. Maximal degree in co-relation 437109. Up to 95643 conditions per place. [2024-10-14 19:24:59,292 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 134 selfloop transitions, 15 changer transitions 0/162 dead transitions. [2024-10-14 19:24:59,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 162 transitions, 694 flow [2024-10-14 19:24:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:24:59,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:24:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-10-14 19:24:59,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6807909604519774 [2024-10-14 19:24:59,296 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 134 flow. Second operand 6 states and 241 transitions. [2024-10-14 19:24:59,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 162 transitions, 694 flow [2024-10-14 19:24:59,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 162 transitions, 694 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:24:59,308 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 252 flow [2024-10-14 19:24:59,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-10-14 19:24:59,311 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2024-10-14 19:24:59,311 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 252 flow [2024-10-14 19:24:59,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2024-10-14 19:24:59,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:59,312 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:59,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 19:24:59,313 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 19:24:59,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:59,314 INFO L85 PathProgramCache]: Analyzing trace with hash -49214207, now seen corresponding path program 1 times [2024-10-14 19:24:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:59,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158721059] [2024-10-14 19:24:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:59,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:59,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158721059] [2024-10-14 19:24:59,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158721059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:24:59,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:24:59,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:24:59,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306524584] [2024-10-14 19:24:59,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:24:59,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:24:59,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:59,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:24:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:24:59,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 59 [2024-10-14 19:24:59,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-14 19:24:59,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:59,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 59 [2024-10-14 19:24:59,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand