./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:15:24,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:15:24,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:15:24,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:15:24,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:15:24,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:15:24,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:15:24,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:15:24,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:15:24,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:15:24,619 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:15:24,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:15:24,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:15:24,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:15:24,622 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:15:24,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:15:24,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:15:24,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:15:24,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:15:24,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:15:24,623 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:15:24,624 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:15:24,624 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:15:24,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:15:24,624 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:15:24,625 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:15:24,628 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:15:24,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:15:24,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:15:24,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:15:24,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:15:24,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:15:24,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:15:24,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:15:24,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:15:24,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:15:24,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:15:24,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:15:24,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:15:24,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:15:24,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:15:24,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:15:24,631 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-11-12 16:15:24,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:15:24,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:15:24,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:15:24,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:15:24,882 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:15:24,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-12 16:15:26,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:15:26,451 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:15:26,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-12 16:15:26,474 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a23c8e9be/e208ef58dec3445296d168e2881f951e/FLAG4a0d0e908 [2024-11-12 16:15:26,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a23c8e9be/e208ef58dec3445296d168e2881f951e [2024-11-12 16:15:26,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:15:26,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:15:26,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:15:26,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:15:26,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:15:26,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:15:26" (1/1) ... [2024-11-12 16:15:26,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1334b395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:26, skipping insertion in model container [2024-11-12 16:15:26,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:15:26" (1/1) ... [2024-11-12 16:15:26,549 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:15:26,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:15:26,987 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:15:27,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:15:27,084 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:15:27,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27 WrapperNode [2024-11-12 16:15:27,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:15:27,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:15:27,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:15:27,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:15:27,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,127 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-12 16:15:27,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:15:27,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:15:27,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:15:27,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:15:27,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,141 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,156 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-12 16:15:27,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:15:27,168 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:15:27,168 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:15:27,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:15:27,169 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (1/1) ... [2024-11-12 16:15:27,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:15:27,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:27,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 16:15:27,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 16:15:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 16:15:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 16:15:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:15:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-11-12 16:15:27,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-11-12 16:15:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:15:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 16:15:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:15:27,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:15:27,238 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:15:27,337 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:15:27,339 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:15:27,486 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:15:27,487 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:15:27,591 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:15:27,591 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 16:15:27,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:27 BoogieIcfgContainer [2024-11-12 16:15:27,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:15:27,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:15:27,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:15:27,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:15:27,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:15:26" (1/3) ... [2024-11-12 16:15:27,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d255781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:15:27, skipping insertion in model container [2024-11-12 16:15:27,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:15:27" (2/3) ... [2024-11-12 16:15:27,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d255781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:15:27, skipping insertion in model container [2024-11-12 16:15:27,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:15:27" (3/3) ... [2024-11-12 16:15:27,598 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-11-12 16:15:27,612 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:15:27,612 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:15:27,612 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:15:27,637 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-12 16:15:27,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2024-11-12 16:15:27,680 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-12 16:15:27,680 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 16:15:27,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 4/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-12 16:15:27,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2024-11-12 16:15:27,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2024-11-12 16:15:27,691 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:15:27,697 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;@7e3a828f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:15:27,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 16:15:27,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:15:27,704 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-12 16:15:27,704 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 16:15:27,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:27,705 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:27,705 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:27,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash -54454784, now seen corresponding path program 1 times [2024-11-12 16:15:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:27,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593427581] [2024-11-12 16:15:27,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:27,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:27,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:27,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593427581] [2024-11-12 16:15:27,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593427581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:27,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:27,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:15:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484097812] [2024-11-12 16:15:27,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:27,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:15:27,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:15:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:15:27,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-12 16:15:27,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:27,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:27,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-12 16:15:27,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:27,998 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2024-11-12 16:15:27,998 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 16:15:27,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 135 events. 61/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 400 event pairs, 27 based on Foata normal form. 9/143 useless extension candidates. Maximal degree in co-relation 247. Up to 78 conditions per place. [2024-11-12 16:15:28,001 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2024-11-12 16:15:28,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2024-11-12 16:15:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:15:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:15:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-12 16:15:28,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-12 16:15:28,015 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-12 16:15:28,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2024-11-12 16:15:28,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 16:15:28,019 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2024-11-12 16:15:28,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2024-11-12 16:15:28,026 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2024-11-12 16:15:28,027 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2024-11-12 16:15:28,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:28,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:28,027 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:28,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:15:28,027 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:28,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:28,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1209453456, now seen corresponding path program 1 times [2024-11-12 16:15:28,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:28,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315303925] [2024-11-12 16:15:28,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:28,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:15:28,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:28,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315303925] [2024-11-12 16:15:28,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315303925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:28,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:28,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:15:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586696540] [2024-11-12 16:15:28,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:28,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:15:28,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:15:28,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:15:28,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-12 16:15:28,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:28,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:28,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-12 16:15:28,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:28,222 INFO L124 PetriNetUnfolderBase]: 101/222 cut-off events. [2024-11-12 16:15:28,223 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-12 16:15:28,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 222 events. 101/222 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 780 event pairs, 53 based on Foata normal form. 10/231 useless extension candidates. Maximal degree in co-relation 123. Up to 126 conditions per place. [2024-11-12 16:15:28,225 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-12 16:15:28,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 146 flow [2024-11-12 16:15:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:15:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:15:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-12 16:15:28,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-12 16:15:28,226 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 49 transitions. [2024-11-12 16:15:28,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 146 flow [2024-11-12 16:15:28,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:15:28,228 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2024-11-12 16:15:28,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2024-11-12 16:15:28,229 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2024-11-12 16:15:28,229 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2024-11-12 16:15:28,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:28,247 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:28,247 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:28,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:15:28,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:28,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:28,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2077585499, now seen corresponding path program 1 times [2024-11-12 16:15:28,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:28,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273493164] [2024-11-12 16:15:28,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:28,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273493164] [2024-11-12 16:15:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273493164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:28,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:28,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 16:15:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619812145] [2024-11-12 16:15:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:28,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:15:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:15:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:15:28,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-12 16:15:28,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:28,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:28,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-12 16:15:28,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:28,465 INFO L124 PetriNetUnfolderBase]: 69/171 cut-off events. [2024-11-12 16:15:28,469 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-12 16:15:28,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 171 events. 69/171 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 530 event pairs, 25 based on Foata normal form. 16/186 useless extension candidates. Maximal degree in co-relation 134. Up to 80 conditions per place. [2024-11-12 16:15:28,471 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 23 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-11-12 16:15:28,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 154 flow [2024-11-12 16:15:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:15:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:15:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-11-12 16:15:28,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-11-12 16:15:28,474 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 46 transitions. [2024-11-12 16:15:28,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 154 flow [2024-11-12 16:15:28,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:15:28,477 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2024-11-12 16:15:28,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-11-12 16:15:28,479 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-12 16:15:28,479 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2024-11-12 16:15:28,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:28,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:28,480 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:28,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 16:15:28,481 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:28,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash -834231567, now seen corresponding path program 2 times [2024-11-12 16:15:28,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:28,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436773405] [2024-11-12 16:15:28,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436773405] [2024-11-12 16:15:28,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436773405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:15:28,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:15:28,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 16:15:28,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933245587] [2024-11-12 16:15:28,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:15:28,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 16:15:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:28,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 16:15:28,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 16:15:28,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-12 16:15:28,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:28,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:28,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-12 16:15:28,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:28,636 INFO L124 PetriNetUnfolderBase]: 93/239 cut-off events. [2024-11-12 16:15:28,637 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-11-12 16:15:28,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 239 events. 93/239 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 796 event pairs, 25 based on Foata normal form. 10/249 useless extension candidates. Maximal degree in co-relation 180. Up to 102 conditions per place. [2024-11-12 16:15:28,641 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 37 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-12 16:15:28,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 228 flow [2024-11-12 16:15:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:15:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:15:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-12 16:15:28,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-12 16:15:28,643 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 4 states and 66 transitions. [2024-11-12 16:15:28,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 228 flow [2024-11-12 16:15:28,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:15:28,644 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 84 flow [2024-11-12 16:15:28,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-11-12 16:15:28,645 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2024-11-12 16:15:28,645 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 84 flow [2024-11-12 16:15:28,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:28,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:28,648 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:28,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:15:28,649 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:28,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1925518542, now seen corresponding path program 3 times [2024-11-12 16:15:28,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:28,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691763366] [2024-11-12 16:15:28,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:15:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691763366] [2024-11-12 16:15:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691763366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:15:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086765226] [2024-11-12 16:15:28,727 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:15:28,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:28,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:28,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:15:28,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:15:28,800 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:15:28,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:15:28,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 16:15:28,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:15:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:15:28,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:15:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 16:15:28,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086765226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:15:28,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:15:28,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-12 16:15:28,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000481394] [2024-11-12 16:15:28,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:15:28,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 16:15:28,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:28,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 16:15:28,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-12 16:15:28,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-12 16:15:28,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:28,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:28,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-12 16:15:28,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:29,037 INFO L124 PetriNetUnfolderBase]: 227/522 cut-off events. [2024-11-12 16:15:29,037 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2024-11-12 16:15:29,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 522 events. 227/522 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1954 event pairs, 35 based on Foata normal form. 42/564 useless extension candidates. Maximal degree in co-relation 427. Up to 118 conditions per place. [2024-11-12 16:15:29,040 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 62 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-11-12 16:15:29,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 71 transitions, 420 flow [2024-11-12 16:15:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:15:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:15:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-12 16:15:29,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-11-12 16:15:29,043 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 84 flow. Second operand 6 states and 97 transitions. [2024-11-12 16:15:29,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 71 transitions, 420 flow [2024-11-12 16:15:29,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 71 transitions, 390 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-12 16:15:29,046 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 118 flow [2024-11-12 16:15:29,047 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-11-12 16:15:29,048 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2024-11-12 16:15:29,049 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 118 flow [2024-11-12 16:15:29,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:29,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:29,050 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:29,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 16:15:29,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:29,255 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:29,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1099781868, now seen corresponding path program 4 times [2024-11-12 16:15:29,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:29,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934164392] [2024-11-12 16:15:29,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:29,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-12 16:15:29,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934164392] [2024-11-12 16:15:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934164392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:15:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587434092] [2024-11-12 16:15:29,340 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:15:29,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:29,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:29,342 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:15:29,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:15:29,410 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:15:29,411 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:15:29,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:15:29,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:15:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:15:29,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:15:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:15:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587434092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:15:29,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:15:29,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-12 16:15:29,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411946689] [2024-11-12 16:15:29,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:15:29,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 16:15:29,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 16:15:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-12 16:15:29,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-12 16:15:29,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 118 flow. Second operand has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:29,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:29,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-12 16:15:29,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:30,263 INFO L124 PetriNetUnfolderBase]: 635/1455 cut-off events. [2024-11-12 16:15:30,263 INFO L125 PetriNetUnfolderBase]: For 2101/2101 co-relation queries the response was YES. [2024-11-12 16:15:30,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 1455 events. 635/1455 cut-off events. For 2101/2101 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6426 event pairs, 10 based on Foata normal form. 161/1616 useless extension candidates. Maximal degree in co-relation 1440. Up to 265 conditions per place. [2024-11-12 16:15:30,270 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 323 selfloop transitions, 92 changer transitions 0/418 dead transitions. [2024-11-12 16:15:30,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 418 transitions, 2488 flow [2024-11-12 16:15:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-12 16:15:30,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-12 16:15:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 720 transitions. [2024-11-12 16:15:30,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-12 16:15:30,273 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 118 flow. Second operand 45 states and 720 transitions. [2024-11-12 16:15:30,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 418 transitions, 2488 flow [2024-11-12 16:15:30,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 418 transitions, 2408 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-12 16:15:30,282 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 994 flow [2024-11-12 16:15:30,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=994, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2024-11-12 16:15:30,283 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 85 predicate places. [2024-11-12 16:15:30,283 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 994 flow [2024-11-12 16:15:30,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.533333333333333) internal successors, (173), 15 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:30,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:30,284 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:30,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 16:15:30,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-12 16:15:30,489 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:30,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1596184169, now seen corresponding path program 5 times [2024-11-12 16:15:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:30,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444664996] [2024-11-12 16:15:30,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:30,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-12 16:15:30,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:30,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444664996] [2024-11-12 16:15:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444664996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:15:30,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136373355] [2024-11-12 16:15:30,624 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:15:30,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:30,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:30,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:15:30,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:15:30,742 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-12 16:15:30,742 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:15:30,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-12 16:15:30,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:15:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-12 16:15:30,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:15:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-12 16:15:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136373355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:15:31,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:15:31,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-12 16:15:31,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551083330] [2024-11-12 16:15:31,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:15:31,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:15:31,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:15:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:15:31,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-12 16:15:31,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 994 flow. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:31,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:31,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-12 16:15:31,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:31,689 INFO L124 PetriNetUnfolderBase]: 1227/2905 cut-off events. [2024-11-12 16:15:31,696 INFO L125 PetriNetUnfolderBase]: For 51632/51643 co-relation queries the response was YES. [2024-11-12 16:15:31,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14160 conditions, 2905 events. 1227/2905 cut-off events. For 51632/51643 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 15540 event pairs, 190 based on Foata normal form. 244/3110 useless extension candidates. Maximal degree in co-relation 12074. Up to 473 conditions per place. [2024-11-12 16:15:31,720 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 173 selfloop transitions, 50 changer transitions 0/231 dead transitions. [2024-11-12 16:15:31,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 231 transitions, 2662 flow [2024-11-12 16:15:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:15:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:15:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-11-12 16:15:31,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5758620689655173 [2024-11-12 16:15:31,721 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 994 flow. Second operand 10 states and 167 transitions. [2024-11-12 16:15:31,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 231 transitions, 2662 flow [2024-11-12 16:15:31,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 231 transitions, 2520 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-11-12 16:15:31,781 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 1142 flow [2024-11-12 16:15:31,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1142, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2024-11-12 16:15:31,782 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 95 predicate places. [2024-11-12 16:15:31,782 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 1142 flow [2024-11-12 16:15:31,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:31,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:31,783 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:31,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 16:15:31,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:31,987 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:31,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:31,989 INFO L85 PathProgramCache]: Analyzing trace with hash -625774390, now seen corresponding path program 6 times [2024-11-12 16:15:31,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:31,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822632223] [2024-11-12 16:15:31,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:31,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-12 16:15:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822632223] [2024-11-12 16:15:32,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822632223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:15:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775627780] [2024-11-12 16:15:32,286 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:15:32,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:32,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:15:32,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 16:15:32,435 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-12 16:15:32,435 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:15:32,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 16:15:32,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:15:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-12 16:15:32,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:15:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-12 16:15:32,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775627780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:15:32,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:15:32,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 31 [2024-11-12 16:15:32,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047757389] [2024-11-12 16:15:32,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:15:32,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-12 16:15:32,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:32,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-12 16:15:32,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=645, Unknown=0, NotChecked=0, Total=930 [2024-11-12 16:15:32,843 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-12 16:15:32,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 1142 flow. Second operand has 31 states, 31 states have (on average 11.064516129032258) internal successors, (343), 31 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:32,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:32,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-12 16:15:32,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:39,250 INFO L124 PetriNetUnfolderBase]: 2727/6373 cut-off events. [2024-11-12 16:15:39,251 INFO L125 PetriNetUnfolderBase]: For 281442/281442 co-relation queries the response was YES. [2024-11-12 16:15:39,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35986 conditions, 6373 events. 2727/6373 cut-off events. For 281442/281442 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 36914 event pairs, 8 based on Foata normal form. 523/6896 useless extension candidates. Maximal degree in co-relation 32993. Up to 1138 conditions per place. [2024-11-12 16:15:39,303 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 1487 selfloop transitions, 470 changer transitions 0/1961 dead transitions. [2024-11-12 16:15:39,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1961 transitions, 18524 flow [2024-11-12 16:15:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2024-11-12 16:15:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2024-11-12 16:15:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 3304 transitions. [2024-11-12 16:15:39,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5399575093969603 [2024-11-12 16:15:39,311 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 1142 flow. Second operand 211 states and 3304 transitions. [2024-11-12 16:15:39,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1961 transitions, 18524 flow [2024-11-12 16:15:39,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1961 transitions, 16574 flow, removed 882 selfloop flow, removed 3 redundant places. [2024-11-12 16:15:39,436 INFO L231 Difference]: Finished difference. Result has 449 places, 514 transitions, 7996 flow [2024-11-12 16:15:39,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=211, PETRI_FLOW=7996, PETRI_PLACES=449, PETRI_TRANSITIONS=514} [2024-11-12 16:15:39,439 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 422 predicate places. [2024-11-12 16:15:39,439 INFO L471 AbstractCegarLoop]: Abstraction has has 449 places, 514 transitions, 7996 flow [2024-11-12 16:15:39,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.064516129032258) internal successors, (343), 31 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:39,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:39,441 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:39,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 16:15:39,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:39,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:39,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash 27892067, now seen corresponding path program 7 times [2024-11-12 16:15:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:39,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347941229] [2024-11-12 16:15:39,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-12 16:15:40,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:40,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347941229] [2024-11-12 16:15:40,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347941229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:15:40,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805895647] [2024-11-12 16:15:40,031 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:15:40,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:40,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:40,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:15:40,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 16:15:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:40,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 16:15:40,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:15:40,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-12 16:15:40,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:15:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1159 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-11-12 16:15:40,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805895647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:15:40,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:15:40,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2024-11-12 16:15:40,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383385233] [2024-11-12 16:15:40,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:15:40,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 16:15:40,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:40,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 16:15:40,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-12 16:15:40,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-12 16:15:40,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 514 transitions, 7996 flow. Second operand has 23 states, 23 states have (on average 10.826086956521738) internal successors, (249), 23 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:40,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:40,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-12 16:15:40,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:15:45,665 INFO L124 PetriNetUnfolderBase]: 5475/12828 cut-off events. [2024-11-12 16:15:45,666 INFO L125 PetriNetUnfolderBase]: For 1526645/1526805 co-relation queries the response was YES. [2024-11-12 16:15:45,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78047 conditions, 12828 events. 5475/12828 cut-off events. For 1526645/1526805 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 84666 event pairs, 372 based on Foata normal form. 1139/13839 useless extension candidates. Maximal degree in co-relation 71654. Up to 2163 conditions per place. [2024-11-12 16:15:45,848 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 611 selfloop transitions, 482 changer transitions 0/1111 dead transitions. [2024-11-12 16:15:45,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 1111 transitions, 23234 flow [2024-11-12 16:15:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 16:15:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 16:15:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 377 transitions. [2024-11-12 16:15:45,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-12 16:15:45,852 INFO L175 Difference]: Start difference. First operand has 449 places, 514 transitions, 7996 flow. Second operand 22 states and 377 transitions. [2024-11-12 16:15:45,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 1111 transitions, 23234 flow [2024-11-12 16:15:49,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 1111 transitions, 20986 flow, removed 810 selfloop flow, removed 40 redundant places. [2024-11-12 16:15:49,677 INFO L231 Difference]: Finished difference. Result has 442 places, 725 transitions, 12076 flow [2024-11-12 16:15:49,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5946, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12076, PETRI_PLACES=442, PETRI_TRANSITIONS=725} [2024-11-12 16:15:49,678 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 415 predicate places. [2024-11-12 16:15:49,678 INFO L471 AbstractCegarLoop]: Abstraction has has 442 places, 725 transitions, 12076 flow [2024-11-12 16:15:49,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.826086956521738) internal successors, (249), 23 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:49,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:15:49,679 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:15:49,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 16:15:49,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:49,880 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:15:49,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:15:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash 401046524, now seen corresponding path program 8 times [2024-11-12 16:15:49,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:15:49,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256125285] [2024-11-12 16:15:49,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:15:49,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:15:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:15:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:52,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:15:52,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256125285] [2024-11-12 16:15:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256125285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:15:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003251090] [2024-11-12 16:15:52,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:15:52,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:15:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:15:52,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:15:52,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 16:15:52,669 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:15:52,669 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:15:52,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-12 16:15:52,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:15:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:52,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:15:53,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:15:53,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003251090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:15:53,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:15:53,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-11-12 16:15:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798786411] [2024-11-12 16:15:53,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:15:53,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-12 16:15:53,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:15:53,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-12 16:15:53,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-11-12 16:15:53,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-12 16:15:53,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 725 transitions, 12076 flow. Second operand has 45 states, 45 states have (on average 9.8) internal successors, (441), 45 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:15:53,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:15:53,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-12 16:15:53,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:16:10,898 INFO L124 PetriNetUnfolderBase]: 9746/24587 cut-off events. [2024-11-12 16:16:10,898 INFO L125 PetriNetUnfolderBase]: For 9581049/9581049 co-relation queries the response was YES. [2024-11-12 16:16:11,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307341 conditions, 24587 events. 9746/24587 cut-off events. For 9581049/9581049 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 194347 event pairs, 1193 based on Foata normal form. 1/24587 useless extension candidates. Maximal degree in co-relation 290049. Up to 4948 conditions per place. [2024-11-12 16:16:12,044 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 2862 selfloop transitions, 83 changer transitions 2/2968 dead transitions. [2024-11-12 16:16:12,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 2968 transitions, 58697 flow [2024-11-12 16:16:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-12 16:16:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-12 16:16:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 732 transitions. [2024-11-12 16:16:12,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5736677115987461 [2024-11-12 16:16:12,047 INFO L175 Difference]: Start difference. First operand has 442 places, 725 transitions, 12076 flow. Second operand 44 states and 732 transitions. [2024-11-12 16:16:12,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 2968 transitions, 58697 flow [2024-11-12 16:16:59,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 2968 transitions, 57277 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-12 16:16:59,497 INFO L231 Difference]: Finished difference. Result has 478 places, 807 transitions, 11970 flow [2024-11-12 16:16:59,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11628, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=11970, PETRI_PLACES=478, PETRI_TRANSITIONS=807} [2024-11-12 16:16:59,499 INFO L279 CegarLoopForPetriNet]: 27 programPoint places, 451 predicate places. [2024-11-12 16:16:59,499 INFO L471 AbstractCegarLoop]: Abstraction has has 478 places, 807 transitions, 11970 flow [2024-11-12 16:16:59,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 9.8) internal successors, (441), 45 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:16:59,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:16:59,501 INFO L206 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:16:59,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 16:16:59,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:16:59,702 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 16:16:59,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:16:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash -55013338, now seen corresponding path program 9 times [2024-11-12 16:16:59,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:16:59,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745361070] [2024-11-12 16:16:59,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:16:59,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:16:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:17:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 970 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-11-12 16:17:00,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:17:00,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745361070] [2024-11-12 16:17:00,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745361070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:17:00,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:17:00,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-12 16:17:00,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480718500] [2024-11-12 16:17:00,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:17:00,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 16:17:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:17:00,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 16:17:00,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2024-11-12 16:17:00,278 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-12 16:17:00,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 807 transitions, 11970 flow. Second operand has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:17:00,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:17:00,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-12 16:17:00,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand