./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 387afe7095db5eeb3a9188bc3fe181fa803bb62f73944f6d781c5c9340fce39e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:54:47,941 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:54:48,010 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:54:48,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:54:48,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:54:48,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:54:48,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:54:48,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:54:48,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:54:48,043 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:54:48,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:54:48,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:54:48,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:54:48,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:54:48,045 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:54:48,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:54:48,046 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:54:48,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:54:48,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:54:48,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:54:48,047 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:54:48,051 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:54:48,051 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:54:48,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:54:48,052 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:54:48,052 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:54:48,052 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:54:48,052 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:54:48,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:54:48,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:54:48,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:54:48,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:54:48,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:54:48,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:54:48,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:54:48,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:54:48,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:54:48,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:54:48,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:54:48,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:54:48,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:54:48,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:54:48,059 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 387afe7095db5eeb3a9188bc3fe181fa803bb62f73944f6d781c5c9340fce39e [2024-10-11 19:54:48,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:54:48,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:54:48,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:54:48,379 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:54:48,380 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:54:48,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-10-11 19:54:49,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:54:50,084 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:54:50,085 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-10-11 19:54:50,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2acde741c/04b8c54ead65435cad1f9c76cc565590/FLAG721f32672 [2024-10-11 19:54:50,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2acde741c/04b8c54ead65435cad1f9c76cc565590 [2024-10-11 19:54:50,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:54:50,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:54:50,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:50,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:54:50,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:54:50,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ce38cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50, skipping insertion in model container [2024-10-11 19:54:50,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:54:50,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:50,368 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:54:50,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:50,406 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:54:50,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50 WrapperNode [2024-10-11 19:54:50,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:50,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:54:50,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:54:50,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:54:50,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,424 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,440 INFO L138 Inliner]: procedures = 20, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-10-11 19:54:50,440 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:54:50,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:54:50,441 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:54:50,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:54:50,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,452 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,467 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]. [2024-10-11 19:54:50,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:54:50,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:54:50,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:54:50,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:54:50,480 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (1/1) ... [2024-10-11 19:54:50,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:54:50,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:50,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:54:50,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:54:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:54:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:54:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:54:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:54:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:54:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:54:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:54:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:54:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:54:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:54:50,577 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:54:50,691 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:54:50,695 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:54:50,964 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:54:50,964 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:54:51,118 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:54:51,119 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:54:51,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:54:51 BoogieIcfgContainer [2024-10-11 19:54:51,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:54:51,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:54:51,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:54:51,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:54:51,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:54:50" (1/3) ... [2024-10-11 19:54:51,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a213927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:54:51, skipping insertion in model container [2024-10-11 19:54:51,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:50" (2/3) ... [2024-10-11 19:54:51,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a213927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:54:51, skipping insertion in model container [2024-10-11 19:54:51,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:54:51" (3/3) ... [2024-10-11 19:54:51,131 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-10-11 19:54:51,153 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:54:51,153 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 19:54:51,153 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:54:51,204 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:54:51,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2024-10-11 19:54:51,259 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-10-11 19:54:51,259 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:54:51,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-10-11 19:54:51,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2024-10-11 19:54:51,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 66 flow [2024-10-11 19:54:51,280 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:54:51,287 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;@2aedca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:54:51,287 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 19:54:51,300 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:54:51,300 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-11 19:54:51,300 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:54:51,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:51,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:51,303 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:51,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1555386887, now seen corresponding path program 1 times [2024-10-11 19:54:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:51,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540456238] [2024-10-11 19:54:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:51,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:51,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:51,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540456238] [2024-10-11 19:54:51,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540456238] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:51,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:51,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:54:51,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137060723] [2024-10-11 19:54:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:51,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:54:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:54:51,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:54:51,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:54:51,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-10-11 19:54:51,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:51,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:54:51,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:51,892 INFO L124 PetriNetUnfolderBase]: 130/252 cut-off events. [2024-10-11 19:54:51,892 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 19:54:51,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 252 events. 130/252 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 948 event pairs, 12 based on Foata normal form. 2/218 useless extension candidates. Maximal degree in co-relation 404. Up to 165 conditions per place. [2024-10-11 19:54:51,899 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 21 selfloop transitions, 5 changer transitions 1/36 dead transitions. [2024-10-11 19:54:51,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 147 flow [2024-10-11 19:54:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:54:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:54:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-10-11 19:54:51,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-10-11 19:54:51,914 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 66 flow. Second operand 3 states and 65 transitions. [2024-10-11 19:54:51,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 147 flow [2024-10-11 19:54:51,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 133 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:54:51,920 INFO L231 Difference]: Finished difference. Result has 27 places, 29 transitions, 87 flow [2024-10-11 19:54:51,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2024-10-11 19:54:51,926 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2024-10-11 19:54:51,927 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 87 flow [2024-10-11 19:54:51,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-10-11 19:54:51,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:51,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:51,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:54:51,930 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:51,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:51,931 INFO L85 PathProgramCache]: Analyzing trace with hash -191551975, now seen corresponding path program 1 times [2024-10-11 19:54:51,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:51,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29091443] [2024-10-11 19:54:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:52,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:52,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:52,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29091443] [2024-10-11 19:54:52,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29091443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:52,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:52,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:52,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129958328] [2024-10-11 19:54:52,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:52,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:52,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:54:52,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-11 19:54:52,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:52,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:54:52,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:52,371 INFO L124 PetriNetUnfolderBase]: 173/318 cut-off events. [2024-10-11 19:54:52,372 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-11 19:54:52,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 318 events. 173/318 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1303 event pairs, 16 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 342. Up to 129 conditions per place. [2024-10-11 19:54:52,377 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 9 changer transitions 3/58 dead transitions. [2024-10-11 19:54:52,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 58 transitions, 254 flow [2024-10-11 19:54:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:52,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-10-11 19:54:52,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-11 19:54:52,381 INFO L175 Difference]: Start difference. First operand has 27 places, 29 transitions, 87 flow. Second operand 5 states and 106 transitions. [2024-10-11 19:54:52,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 58 transitions, 254 flow [2024-10-11 19:54:52,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 58 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:52,386 INFO L231 Difference]: Finished difference. Result has 33 places, 36 transitions, 139 flow [2024-10-11 19:54:52,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=33, PETRI_TRANSITIONS=36} [2024-10-11 19:54:52,387 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-10-11 19:54:52,387 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 36 transitions, 139 flow [2024-10-11 19:54:52,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-11 19:54:52,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:52,391 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:52,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:54:52,392 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:52,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash -44134793, now seen corresponding path program 2 times [2024-10-11 19:54:52,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:52,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504195963] [2024-10-11 19:54:52,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:52,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:52,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:52,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504195963] [2024-10-11 19:54:52,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504195963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:52,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:52,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884157757] [2024-10-11 19:54:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:52,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:52,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:54:52,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-11 19:54:52,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:52,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:54:52,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:52,723 INFO L124 PetriNetUnfolderBase]: 160/325 cut-off events. [2024-10-11 19:54:52,723 INFO L125 PetriNetUnfolderBase]: For 206/222 co-relation queries the response was YES. [2024-10-11 19:54:52,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 325 events. 160/325 cut-off events. For 206/222 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1408 event pairs, 11 based on Foata normal form. 15/303 useless extension candidates. Maximal degree in co-relation 248. Up to 80 conditions per place. [2024-10-11 19:54:52,731 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 12 changer transitions 3/63 dead transitions. [2024-10-11 19:54:52,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 63 transitions, 343 flow [2024-10-11 19:54:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-10-11 19:54:52,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7066666666666667 [2024-10-11 19:54:52,735 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 139 flow. Second operand 5 states and 106 transitions. [2024-10-11 19:54:52,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 63 transitions, 343 flow [2024-10-11 19:54:52,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 63 transitions, 343 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:54:52,738 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 225 flow [2024-10-11 19:54:52,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2024-10-11 19:54:52,739 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-10-11 19:54:52,740 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 225 flow [2024-10-11 19:54:52,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-10-11 19:54:52,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:52,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:52,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:54:52,740 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:52,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash 932324787, now seen corresponding path program 1 times [2024-10-11 19:54:52,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:52,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454116970] [2024-10-11 19:54:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:52,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:52,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454116970] [2024-10-11 19:54:52,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454116970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:52,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:52,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:52,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182493428] [2024-10-11 19:54:52,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:52,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:52,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:52,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:54:52,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-10-11 19:54:52,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:52,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:54:52,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:53,000 INFO L124 PetriNetUnfolderBase]: 159/314 cut-off events. [2024-10-11 19:54:53,001 INFO L125 PetriNetUnfolderBase]: For 596/652 co-relation queries the response was YES. [2024-10-11 19:54:53,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 314 events. 159/314 cut-off events. For 596/652 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1326 event pairs, 15 based on Foata normal form. 10/287 useless extension candidates. Maximal degree in co-relation 327. Up to 145 conditions per place. [2024-10-11 19:54:53,005 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 42 selfloop transitions, 8 changer transitions 4/65 dead transitions. [2024-10-11 19:54:53,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 65 transitions, 435 flow [2024-10-11 19:54:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-10-11 19:54:53,007 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6933333333333334 [2024-10-11 19:54:53,007 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 225 flow. Second operand 5 states and 104 transitions. [2024-10-11 19:54:53,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 65 transitions, 435 flow [2024-10-11 19:54:53,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 431 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-11 19:54:53,013 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 272 flow [2024-10-11 19:54:53,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-10-11 19:54:53,014 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-10-11 19:54:53,015 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 272 flow [2024-10-11 19:54:53,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-10-11 19:54:53,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:53,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:53,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:54:53,017 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:53,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:53,018 INFO L85 PathProgramCache]: Analyzing trace with hash -2018817321, now seen corresponding path program 2 times [2024-10-11 19:54:53,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:53,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609070648] [2024-10-11 19:54:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:53,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:53,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609070648] [2024-10-11 19:54:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609070648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:53,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:53,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262106640] [2024-10-11 19:54:53,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:53,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:53,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:54:53,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-10-11 19:54:53,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:53,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:54:53,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:53,248 INFO L124 PetriNetUnfolderBase]: 148/311 cut-off events. [2024-10-11 19:54:53,248 INFO L125 PetriNetUnfolderBase]: For 651/697 co-relation queries the response was YES. [2024-10-11 19:54:53,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 311 events. 148/311 cut-off events. For 651/697 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1235 event pairs, 11 based on Foata normal form. 18/296 useless extension candidates. Maximal degree in co-relation 722. Up to 80 conditions per place. [2024-10-11 19:54:53,251 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 40 selfloop transitions, 12 changer transitions 2/65 dead transitions. [2024-10-11 19:54:53,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 482 flow [2024-10-11 19:54:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:54:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:54:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-10-11 19:54:53,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-10-11 19:54:53,253 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 272 flow. Second operand 5 states and 101 transitions. [2024-10-11 19:54:53,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 482 flow [2024-10-11 19:54:53,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 466 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:53,261 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 335 flow [2024-10-11 19:54:53,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-10-11 19:54:53,261 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-10-11 19:54:53,262 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 335 flow [2024-10-11 19:54:53,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-10-11 19:54:53,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:53,262 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:53,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:54:53,264 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:53,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:53,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1422225363, now seen corresponding path program 1 times [2024-10-11 19:54:53,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:53,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866853943] [2024-10-11 19:54:53,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:53,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:53,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:53,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866853943] [2024-10-11 19:54:53,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866853943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:53,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055423647] [2024-10-11 19:54:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:53,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:53,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:53,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:53,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 19:54:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:53,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:54:53,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:53,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:54,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055423647] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:54,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:54,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-10-11 19:54:54,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093468743] [2024-10-11 19:54:54,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:54,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 19:54:54,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:54,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 19:54:54,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-11 19:54:54,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-11 19:54:54,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 335 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 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) [2024-10-11 19:54:54,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:54,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-11 19:54:54,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:54,450 INFO L124 PetriNetUnfolderBase]: 418/789 cut-off events. [2024-10-11 19:54:54,450 INFO L125 PetriNetUnfolderBase]: For 2152/2152 co-relation queries the response was YES. [2024-10-11 19:54:54,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 789 events. 418/789 cut-off events. For 2152/2152 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3364 event pairs, 23 based on Foata normal form. 24/752 useless extension candidates. Maximal degree in co-relation 1141. Up to 221 conditions per place. [2024-10-11 19:54:54,459 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 100 selfloop transitions, 24 changer transitions 0/131 dead transitions. [2024-10-11 19:54:54,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 131 transitions, 1146 flow [2024-10-11 19:54:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:54:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:54:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-10-11 19:54:54,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6703703703703704 [2024-10-11 19:54:54,463 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 335 flow. Second operand 9 states and 181 transitions. [2024-10-11 19:54:54,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 131 transitions, 1146 flow [2024-10-11 19:54:54,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 131 transitions, 1107 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:54,473 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 526 flow [2024-10-11 19:54:54,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=526, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-10-11 19:54:54,475 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-10-11 19:54:54,476 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 526 flow [2024-10-11 19:54:54,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 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) [2024-10-11 19:54:54,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:54,477 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:54,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 19:54:54,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:54,678 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:54,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash 900567103, now seen corresponding path program 1 times [2024-10-11 19:54:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:54,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671804732] [2024-10-11 19:54:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:54,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:54,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671804732] [2024-10-11 19:54:54,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671804732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:54,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:54,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:54:54,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654831150] [2024-10-11 19:54:54,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:54,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:54,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:54:54,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 19:54:54,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:54,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:54:54,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:55,059 INFO L124 PetriNetUnfolderBase]: 744/1569 cut-off events. [2024-10-11 19:54:55,060 INFO L125 PetriNetUnfolderBase]: For 5745/5803 co-relation queries the response was YES. [2024-10-11 19:54:55,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6289 conditions, 1569 events. 744/1569 cut-off events. For 5745/5803 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9179 event pairs, 222 based on Foata normal form. 24/1382 useless extension candidates. Maximal degree in co-relation 2814. Up to 380 conditions per place. [2024-10-11 19:54:55,077 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 67 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-10-11 19:54:55,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 1230 flow [2024-10-11 19:54:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:54:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:54:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-10-11 19:54:55,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-10-11 19:54:55,079 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 526 flow. Second operand 4 states and 89 transitions. [2024-10-11 19:54:55,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 1230 flow [2024-10-11 19:54:55,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 113 transitions, 1204 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:55,098 INFO L231 Difference]: Finished difference. Result has 68 places, 82 transitions, 914 flow [2024-10-11 19:54:55,098 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=68, PETRI_TRANSITIONS=82} [2024-10-11 19:54:55,099 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-10-11 19:54:55,099 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 82 transitions, 914 flow [2024-10-11 19:54:55,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 19:54:55,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:55,100 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:55,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:54:55,100 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:55,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash -276997555, now seen corresponding path program 1 times [2024-10-11 19:54:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:55,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209119510] [2024-10-11 19:54:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:55,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:55,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:55,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:55,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209119510] [2024-10-11 19:54:55,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209119510] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:55,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668709148] [2024-10-11 19:54:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:55,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:55,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:55,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:55,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 19:54:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:55,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:54:55,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:55,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:56,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668709148] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:56,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 15 [2024-10-11 19:54:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094747327] [2024-10-11 19:54:56,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:56,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 19:54:56,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:56,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 19:54:56,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-11 19:54:56,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-11 19:54:56,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 82 transitions, 914 flow. Second operand has 16 states, 16 states have (on average 13.0) internal successors, (208), 16 states have internal predecessors, (208), 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) [2024-10-11 19:54:56,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:56,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-11 19:54:56,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:57,665 INFO L124 PetriNetUnfolderBase]: 1863/3600 cut-off events. [2024-10-11 19:54:57,666 INFO L125 PetriNetUnfolderBase]: For 17352/17352 co-relation queries the response was YES. [2024-10-11 19:54:57,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14704 conditions, 3600 events. 1863/3600 cut-off events. For 17352/17352 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 23294 event pairs, 36 based on Foata normal form. 100/3495 useless extension candidates. Maximal degree in co-relation 6413. Up to 937 conditions per place. [2024-10-11 19:54:57,700 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 157 selfloop transitions, 54 changer transitions 0/219 dead transitions. [2024-10-11 19:54:57,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 219 transitions, 2459 flow [2024-10-11 19:54:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 19:54:57,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 19:54:57,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 294 transitions. [2024-10-11 19:54:57,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-10-11 19:54:57,703 INFO L175 Difference]: Start difference. First operand has 68 places, 82 transitions, 914 flow. Second operand 16 states and 294 transitions. [2024-10-11 19:54:57,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 219 transitions, 2459 flow [2024-10-11 19:54:57,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 219 transitions, 2459 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:54:57,726 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 1560 flow [2024-10-11 19:54:57,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1560, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-10-11 19:54:57,727 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-10-11 19:54:57,728 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 1560 flow [2024-10-11 19:54:57,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0) internal successors, (208), 16 states have internal predecessors, (208), 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) [2024-10-11 19:54:57,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:57,728 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:57,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 19:54:57,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:57,929 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:57,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash 801508855, now seen corresponding path program 2 times [2024-10-11 19:54:57,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:57,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907010586] [2024-10-11 19:54:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:57,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 19:54:58,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:58,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907010586] [2024-10-11 19:54:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907010586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:58,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:58,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:54:58,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370273250] [2024-10-11 19:54:58,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:58,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:58,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:58,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:58,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:58,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:54:58,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 1560 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 19:54:58,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:58,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:54:58,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:59,080 INFO L124 PetriNetUnfolderBase]: 3103/6581 cut-off events. [2024-10-11 19:54:59,080 INFO L125 PetriNetUnfolderBase]: For 48847/48961 co-relation queries the response was YES. [2024-10-11 19:54:59,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30468 conditions, 6581 events. 3103/6581 cut-off events. For 48847/48961 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 53915 event pairs, 901 based on Foata normal form. 4/6067 useless extension candidates. Maximal degree in co-relation 26409. Up to 1981 conditions per place. [2024-10-11 19:54:59,151 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 197 selfloop transitions, 27 changer transitions 0/255 dead transitions. [2024-10-11 19:54:59,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 255 transitions, 4070 flow [2024-10-11 19:54:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:54:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:54:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-10-11 19:54:59,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-10-11 19:54:59,152 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 1560 flow. Second operand 4 states and 88 transitions. [2024-10-11 19:54:59,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 255 transitions, 4070 flow [2024-10-11 19:54:59,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 255 transitions, 3900 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-10-11 19:54:59,251 INFO L231 Difference]: Finished difference. Result has 94 places, 143 transitions, 1949 flow [2024-10-11 19:54:59,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1949, PETRI_PLACES=94, PETRI_TRANSITIONS=143} [2024-10-11 19:54:59,252 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-10-11 19:54:59,252 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 143 transitions, 1949 flow [2024-10-11 19:54:59,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 19:54:59,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:59,254 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:59,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:54:59,254 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:54:59,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:59,254 INFO L85 PathProgramCache]: Analyzing trace with hash -295026405, now seen corresponding path program 1 times [2024-10-11 19:54:59,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:54:59,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883795116] [2024-10-11 19:54:59,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:59,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:54:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:59,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:54:59,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883795116] [2024-10-11 19:54:59,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883795116] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:54:59,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871735978] [2024-10-11 19:54:59,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:59,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:54:59,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:59,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:54:59,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 19:54:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:59,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:54:59,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:59,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:59,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871735978] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:59,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:54:59,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-10-11 19:54:59,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631020037] [2024-10-11 19:54:59,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:59,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:54:59,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:54:59,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:54:59,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:54:59,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:54:59,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 143 transitions, 1949 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2024-10-11 19:54:59,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:59,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:54:59,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:01,368 INFO L124 PetriNetUnfolderBase]: 5189/11026 cut-off events. [2024-10-11 19:55:01,368 INFO L125 PetriNetUnfolderBase]: For 88879/89347 co-relation queries the response was YES. [2024-10-11 19:55:01,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56217 conditions, 11026 events. 5189/11026 cut-off events. For 88879/89347 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 94631 event pairs, 1073 based on Foata normal form. 73/10804 useless extension candidates. Maximal degree in co-relation 48574. Up to 5101 conditions per place. [2024-10-11 19:55:01,456 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 271 selfloop transitions, 17 changer transitions 1/319 dead transitions. [2024-10-11 19:55:01,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 319 transitions, 4991 flow [2024-10-11 19:55:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:55:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:55:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-10-11 19:55:01,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2024-10-11 19:55:01,457 INFO L175 Difference]: Start difference. First operand has 94 places, 143 transitions, 1949 flow. Second operand 5 states and 116 transitions. [2024-10-11 19:55:01,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 319 transitions, 4991 flow [2024-10-11 19:55:01,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 319 transitions, 4974 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-11 19:55:01,657 INFO L231 Difference]: Finished difference. Result has 98 places, 155 transitions, 2045 flow [2024-10-11 19:55:01,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2045, PETRI_PLACES=98, PETRI_TRANSITIONS=155} [2024-10-11 19:55:01,658 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-10-11 19:55:01,658 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 155 transitions, 2045 flow [2024-10-11 19:55:01,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2024-10-11 19:55:01,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:01,658 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:01,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 19:55:01,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:55:01,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:55:01,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:01,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1779713525, now seen corresponding path program 2 times [2024-10-11 19:55:01,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:01,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744237126] [2024-10-11 19:55:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:01,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:02,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:02,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744237126] [2024-10-11 19:55:02,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744237126] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:55:02,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893560460] [2024-10-11 19:55:02,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:55:02,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:55:02,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:55:02,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:55:02,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 19:55:02,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:55:02,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:02,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:55:02,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:02,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:02,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893560460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:02,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:55:02,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-11 19:55:02,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243194759] [2024-10-11 19:55:02,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:02,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:55:02,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:02,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:55:02,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:55:02,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:55:02,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 155 transitions, 2045 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-10-11 19:55:02,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:02,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:55:02,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:04,384 INFO L124 PetriNetUnfolderBase]: 7456/15897 cut-off events. [2024-10-11 19:55:04,385 INFO L125 PetriNetUnfolderBase]: For 136014/136981 co-relation queries the response was YES. [2024-10-11 19:55:04,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85233 conditions, 15897 events. 7456/15897 cut-off events. For 136014/136981 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 142546 event pairs, 1291 based on Foata normal form. 165/15695 useless extension candidates. Maximal degree in co-relation 75190. Up to 5072 conditions per place. [2024-10-11 19:55:04,566 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 338 selfloop transitions, 33 changer transitions 1/402 dead transitions. [2024-10-11 19:55:04,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 402 transitions, 6309 flow [2024-10-11 19:55:04,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:55:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:55:04,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-10-11 19:55:04,568 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-10-11 19:55:04,568 INFO L175 Difference]: Start difference. First operand has 98 places, 155 transitions, 2045 flow. Second operand 6 states and 140 transitions. [2024-10-11 19:55:04,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 402 transitions, 6309 flow [2024-10-11 19:55:04,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 402 transitions, 6253 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-10-11 19:55:04,941 INFO L231 Difference]: Finished difference. Result has 104 places, 171 transitions, 2178 flow [2024-10-11 19:55:04,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2178, PETRI_PLACES=104, PETRI_TRANSITIONS=171} [2024-10-11 19:55:04,942 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-10-11 19:55:04,942 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 171 transitions, 2178 flow [2024-10-11 19:55:04,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-10-11 19:55:04,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:04,943 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:04,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 19:55:05,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 19:55:05,143 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:55:05,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1500098627, now seen corresponding path program 3 times [2024-10-11 19:55:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:05,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418819648] [2024-10-11 19:55:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:05,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:05,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418819648] [2024-10-11 19:55:05,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418819648] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:55:05,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007089139] [2024-10-11 19:55:05,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:55:05,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:55:05,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:55:05,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:55:05,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 19:55:05,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 19:55:05,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:05,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:55:05,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:05,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007089139] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:05,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:55:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-11 19:55:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086242946] [2024-10-11 19:55:05,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:05,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:55:05,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:55:05,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:55:05,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:55:05,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 171 transitions, 2178 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-10-11 19:55:05,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:05,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:55:05,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:08,712 INFO L124 PetriNetUnfolderBase]: 10939/23373 cut-off events. [2024-10-11 19:55:08,712 INFO L125 PetriNetUnfolderBase]: For 202900/204137 co-relation queries the response was YES. [2024-10-11 19:55:08,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126902 conditions, 23373 events. 10939/23373 cut-off events. For 202900/204137 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 223705 event pairs, 1539 based on Foata normal form. 228/23113 useless extension candidates. Maximal degree in co-relation 111832. Up to 12100 conditions per place. [2024-10-11 19:55:08,901 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 401 selfloop transitions, 27 changer transitions 1/459 dead transitions. [2024-10-11 19:55:08,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 459 transitions, 7145 flow [2024-10-11 19:55:08,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:55:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:55:08,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-11 19:55:08,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-11 19:55:08,903 INFO L175 Difference]: Start difference. First operand has 104 places, 171 transitions, 2178 flow. Second operand 6 states and 144 transitions. [2024-10-11 19:55:08,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 459 transitions, 7145 flow [2024-10-11 19:55:09,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 459 transitions, 7074 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-10-11 19:55:09,407 INFO L231 Difference]: Finished difference. Result has 110 places, 193 transitions, 2362 flow [2024-10-11 19:55:09,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2362, PETRI_PLACES=110, PETRI_TRANSITIONS=193} [2024-10-11 19:55:09,408 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-10-11 19:55:09,408 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 193 transitions, 2362 flow [2024-10-11 19:55:09,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-10-11 19:55:09,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:09,408 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:09,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 19:55:09,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 19:55:09,609 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:55:09,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1772160307, now seen corresponding path program 1 times [2024-10-11 19:55:09,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:09,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187989517] [2024-10-11 19:55:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:09,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187989517] [2024-10-11 19:55:09,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187989517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:55:09,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:55:09,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:55:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132303625] [2024-10-11 19:55:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:55:09,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:55:09,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:55:09,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:55:09,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:55:09,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 193 transitions, 2362 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:09,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:09,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:55:09,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:11,740 INFO L124 PetriNetUnfolderBase]: 6448/14231 cut-off events. [2024-10-11 19:55:11,741 INFO L125 PetriNetUnfolderBase]: For 132659/133145 co-relation queries the response was YES. [2024-10-11 19:55:11,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77325 conditions, 14231 events. 6448/14231 cut-off events. For 132659/133145 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 133131 event pairs, 1260 based on Foata normal form. 482/14448 useless extension candidates. Maximal degree in co-relation 68506. Up to 5129 conditions per place. [2024-10-11 19:55:11,867 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 201 selfloop transitions, 27 changer transitions 0/279 dead transitions. [2024-10-11 19:55:11,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 279 transitions, 3989 flow [2024-10-11 19:55:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:55:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:55:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-11 19:55:11,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 19:55:11,869 INFO L175 Difference]: Start difference. First operand has 110 places, 193 transitions, 2362 flow. Second operand 4 states and 84 transitions. [2024-10-11 19:55:11,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 279 transitions, 3989 flow [2024-10-11 19:55:12,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 279 transitions, 3957 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-10-11 19:55:12,180 INFO L231 Difference]: Finished difference. Result has 115 places, 174 transitions, 2233 flow [2024-10-11 19:55:12,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2233, PETRI_PLACES=115, PETRI_TRANSITIONS=174} [2024-10-11 19:55:12,181 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-10-11 19:55:12,181 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 174 transitions, 2233 flow [2024-10-11 19:55:12,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:55:12,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:12,181 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:12,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 19:55:12,181 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:55:12,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1341369453, now seen corresponding path program 4 times [2024-10-11 19:55:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:12,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753142674] [2024-10-11 19:55:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:12,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:12,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753142674] [2024-10-11 19:55:12,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753142674] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:55:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572193575] [2024-10-11 19:55:12,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 19:55:12,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:55:12,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:55:12,497 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:55:12,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 19:55:12,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 19:55:12,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:12,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:55:12,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:12,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:12,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572193575] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:12,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:55:12,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-11 19:55:12,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370904878] [2024-10-11 19:55:12,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:12,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:55:12,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:55:12,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:55:12,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:55:12,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 174 transitions, 2233 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-10-11 19:55:12,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:12,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:55:12,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:15,387 INFO L124 PetriNetUnfolderBase]: 8453/18790 cut-off events. [2024-10-11 19:55:15,387 INFO L125 PetriNetUnfolderBase]: For 200410/201678 co-relation queries the response was YES. [2024-10-11 19:55:15,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107659 conditions, 18790 events. 8453/18790 cut-off events. For 200410/201678 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 186077 event pairs, 1199 based on Foata normal form. 327/18717 useless extension candidates. Maximal degree in co-relation 93259. Up to 8800 conditions per place. [2024-10-11 19:55:15,540 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 371 selfloop transitions, 30 changer transitions 1/433 dead transitions. [2024-10-11 19:55:15,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 433 transitions, 6865 flow [2024-10-11 19:55:15,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:55:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:55:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-10-11 19:55:15,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8 [2024-10-11 19:55:15,541 INFO L175 Difference]: Start difference. First operand has 115 places, 174 transitions, 2233 flow. Second operand 6 states and 144 transitions. [2024-10-11 19:55:15,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 433 transitions, 6865 flow [2024-10-11 19:55:16,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 433 transitions, 6865 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:55:16,111 INFO L231 Difference]: Finished difference. Result has 123 places, 199 transitions, 2511 flow [2024-10-11 19:55:16,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2511, PETRI_PLACES=123, PETRI_TRANSITIONS=199} [2024-10-11 19:55:16,112 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-10-11 19:55:16,112 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 199 transitions, 2511 flow [2024-10-11 19:55:16,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-10-11 19:55:16,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:16,112 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:16,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 19:55:16,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 19:55:16,313 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:55:16,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1111740841, now seen corresponding path program 5 times [2024-10-11 19:55:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:16,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490835763] [2024-10-11 19:55:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:16,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:16,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490835763] [2024-10-11 19:55:16,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490835763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:55:16,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036561571] [2024-10-11 19:55:16,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 19:55:16,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:55:16,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:55:16,445 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:55:16,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 19:55:16,508 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-11 19:55:16,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:16,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:55:16,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:16,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:55:16,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036561571] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:16,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:55:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-11 19:55:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625811018] [2024-10-11 19:55:16,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:16,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:55:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:55:16,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:55:16,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:55:16,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 199 transitions, 2511 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-10-11 19:55:16,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:16,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:55:16,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:20,223 INFO L124 PetriNetUnfolderBase]: 9743/21597 cut-off events. [2024-10-11 19:55:20,224 INFO L125 PetriNetUnfolderBase]: For 246161/248167 co-relation queries the response was YES. [2024-10-11 19:55:20,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129277 conditions, 21597 events. 9743/21597 cut-off events. For 246161/248167 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 217822 event pairs, 1621 based on Foata normal form. 481/21655 useless extension candidates. Maximal degree in co-relation 112429. Up to 10836 conditions per place. [2024-10-11 19:55:20,440 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 353 selfloop transitions, 53 changer transitions 1/438 dead transitions. [2024-10-11 19:55:20,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 438 transitions, 6910 flow [2024-10-11 19:55:20,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:55:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:55:20,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-10-11 19:55:20,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2024-10-11 19:55:20,441 INFO L175 Difference]: Start difference. First operand has 123 places, 199 transitions, 2511 flow. Second operand 6 states and 141 transitions. [2024-10-11 19:55:20,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 438 transitions, 6910 flow [2024-10-11 19:55:21,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 438 transitions, 6880 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-10-11 19:55:21,087 INFO L231 Difference]: Finished difference. Result has 131 places, 227 transitions, 2930 flow [2024-10-11 19:55:21,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2930, PETRI_PLACES=131, PETRI_TRANSITIONS=227} [2024-10-11 19:55:21,088 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-10-11 19:55:21,088 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 227 transitions, 2930 flow [2024-10-11 19:55:21,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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) [2024-10-11 19:55:21,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:21,088 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:21,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 19:55:21,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:55:21,289 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:55:21,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1154319799, now seen corresponding path program 1 times [2024-10-11 19:55:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033976872] [2024-10-11 19:55:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 19:55:21,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:21,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033976872] [2024-10-11 19:55:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033976872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:55:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:55:21,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:55:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953105561] [2024-10-11 19:55:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:55:21,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:55:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:55:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:55:21,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-10-11 19:55:21,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 227 transitions, 2930 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 19:55:21,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:21,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-10-11 19:55:21,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:23,003 INFO L124 PetriNetUnfolderBase]: 4678/10861 cut-off events. [2024-10-11 19:55:23,003 INFO L125 PetriNetUnfolderBase]: For 148847/150145 co-relation queries the response was YES. [2024-10-11 19:55:23,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68069 conditions, 10861 events. 4678/10861 cut-off events. For 148847/150145 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 99191 event pairs, 735 based on Foata normal form. 421/10926 useless extension candidates. Maximal degree in co-relation 60889. Up to 3625 conditions per place. [2024-10-11 19:55:23,081 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 157 selfloop transitions, 31 changer transitions 0/254 dead transitions. [2024-10-11 19:55:23,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 254 transitions, 3837 flow [2024-10-11 19:55:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:55:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:55:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-11 19:55:23,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-10-11 19:55:23,083 INFO L175 Difference]: Start difference. First operand has 131 places, 227 transitions, 2930 flow. Second operand 4 states and 84 transitions. [2024-10-11 19:55:23,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 254 transitions, 3837 flow [2024-10-11 19:55:23,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 254 transitions, 3810 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-11 19:55:23,322 INFO L231 Difference]: Finished difference. Result has 135 places, 193 transitions, 2614 flow [2024-10-11 19:55:23,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2614, PETRI_PLACES=135, PETRI_TRANSITIONS=193} [2024-10-11 19:55:23,323 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-10-11 19:55:23,323 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 193 transitions, 2614 flow [2024-10-11 19:55:23,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-11 19:55:23,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:23,323 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:23,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 19:55:23,323 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-11 19:55:23,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash 967356539, now seen corresponding path program 6 times [2024-10-11 19:55:23,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:55:23,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997154397] [2024-10-11 19:55:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:55:23,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:55:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:55:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:23,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:55:23,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997154397] [2024-10-11 19:55:23,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997154397] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 19:55:23,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225146076] [2024-10-11 19:55:23,907 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 19:55:23,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 19:55:23,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:55:23,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 19:55:23,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 19:55:24,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-11 19:55:24,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:24,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 19:55:24,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:24,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225146076] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:28,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 19:55:28,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2024-10-11 19:55:28,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976559082] [2024-10-11 19:55:28,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:28,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 19:55:28,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:55:28,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 19:55:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2024-10-11 19:55:28,304 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-10-11 19:55:28,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 193 transitions, 2614 flow. Second operand has 23 states, 23 states have (on average 13.0) internal successors, (299), 23 states have internal predecessors, (299), 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) [2024-10-11 19:55:28,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:28,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-10-11 19:55:28,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:37,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 19:55:39,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-11 19:56:11,630 WARN L286 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 49 DAG size of output: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)