./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 3061b6dc 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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:37:21,092 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:37:21,151 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:37:21,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:37:21,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:37:21,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:37:21,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:37:21,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:37:21,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:37:21,183 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:37:21,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:37:21,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:37:21,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:37:21,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:37:21,186 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:37:21,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:37:21,187 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:37:21,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:37:21,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:37:21,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:37:21,188 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:37:21,189 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:37:21,189 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:37:21,190 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:37:21,190 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:37:21,190 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:37:21,190 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:37:21,190 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:37:21,191 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:37:21,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:37:21,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:37:21,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:37:21,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:37:21,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:37:21,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:37:21,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:37:21,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:37:21,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:37:21,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:37:21,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:37:21,201 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:37:21,201 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:37:21,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-11-19 09:37:21,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:37:21,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:37:21,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:37:21,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:37:21,424 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:37:21,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-19 09:37:22,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:37:22,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:37:22,990 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-19 09:37:23,010 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd4ea4b1/bf18d67caba44929a5dead63aaebdff0/FLAG586957245 [2024-11-19 09:37:23,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd4ea4b1/bf18d67caba44929a5dead63aaebdff0 [2024-11-19 09:37:23,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:37:23,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:37:23,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:37:23,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:37:23,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:37:23,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5419d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23, skipping insertion in model container [2024-11-19 09:37:23,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,078 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:37:23,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:37:23,545 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:37:23,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:37:23,641 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:37:23,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23 WrapperNode [2024-11-19 09:37:23,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:37:23,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:37:23,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:37:23,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:37:23,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,705 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-19 09:37:23,707 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:37:23,709 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:37:23,709 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:37:23,709 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:37:23,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,730 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,744 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]. [2024-11-19 09:37:23,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,751 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,753 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:37:23,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:37:23,757 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:37:23,757 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:37:23,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (1/1) ... [2024-11-19 09:37:23,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:37:23,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:23,798 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) [2024-11-19 09:37:23,802 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 [2024-11-19 09:37:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 09:37:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 09:37:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:37:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-11-19 09:37:23,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-11-19 09:37:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:37:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:37:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:37:23,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:37:23,844 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:37:23,972 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:37:23,975 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:37:24,114 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:37:24,114 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:37:24,238 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:37:24,238 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:37:24,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:37:24 BoogieIcfgContainer [2024-11-19 09:37:24,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:37:24,241 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:37:24,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:37:24,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:37:24,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:37:23" (1/3) ... [2024-11-19 09:37:24,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8b85cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:37:24, skipping insertion in model container [2024-11-19 09:37:24,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:37:23" (2/3) ... [2024-11-19 09:37:24,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8b85cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:37:24, skipping insertion in model container [2024-11-19 09:37:24,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:37:24" (3/3) ... [2024-11-19 09:37:24,249 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-11-19 09:37:24,264 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:37:24,265 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:37:24,265 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:37:24,299 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-19 09:37:24,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2024-11-19 09:37:24,362 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-19 09:37:24,363 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:37:24,365 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. [2024-11-19 09:37:24,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2024-11-19 09:37:24,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2024-11-19 09:37:24,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:37:24,380 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;@4752aaee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:37:24,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 09:37:24,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:37:24,388 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-19 09:37:24,388 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:37:24,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:24,389 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:24,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:24,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -54454784, now seen corresponding path program 1 times [2024-11-19 09:37:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138693974] [2024-11-19 09:37:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:24,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138693974] [2024-11-19 09:37:24,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138693974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:37:24,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:37:24,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:37:24,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249455944] [2024-11-19 09:37:24,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:37:24,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:37:24,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:37:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:37:24,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-19 09:37:24,674 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) [2024-11-19 09:37:24,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:24,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-19 09:37:24,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:24,778 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2024-11-19 09:37:24,778 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-19 09:37:24,778 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. [2024-11-19 09:37:24,781 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2024-11-19 09:37:24,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2024-11-19 09:37:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:37:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:37:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-19 09:37:24,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-19 09:37:24,794 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-19 09:37:24,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2024-11-19 09:37:24,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:37:24,798 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2024-11-19 09:37:24,800 INFO L260 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} [2024-11-19 09:37:24,802 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2024-11-19 09:37:24,803 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2024-11-19 09:37:24,803 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) [2024-11-19 09:37:24,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:24,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:24,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:37:24,804 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:24,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:24,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1209453456, now seen corresponding path program 1 times [2024-11-19 09:37:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:24,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002705302] [2024-11-19 09:37:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:24,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:24,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:24,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002705302] [2024-11-19 09:37:24,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002705302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:37:24,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:37:24,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:37:24,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420283189] [2024-11-19 09:37:24,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:37:24,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:37:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:24,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:37:24,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:37:24,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-19 09:37:24,891 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) [2024-11-19 09:37:24,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:24,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-19 09:37:24,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:24,971 INFO L124 PetriNetUnfolderBase]: 101/222 cut-off events. [2024-11-19 09:37:24,972 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-19 09:37:24,973 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. [2024-11-19 09:37:24,975 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-19 09:37:24,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 146 flow [2024-11-19 09:37:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:37:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:37:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-19 09:37:24,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-19 09:37:24,980 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 49 transitions. [2024-11-19 09:37:24,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 146 flow [2024-11-19 09:37:24,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:37:24,981 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2024-11-19 09:37:24,981 INFO L260 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} [2024-11-19 09:37:24,982 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2024-11-19 09:37:24,982 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2024-11-19 09:37:24,982 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) [2024-11-19 09:37:24,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:24,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:24,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:37:24,985 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:24,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2077585499, now seen corresponding path program 1 times [2024-11-19 09:37:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026697971] [2024-11-19 09:37:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:37:24,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:25,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:25,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026697971] [2024-11-19 09:37:25,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026697971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:37:25,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:37:25,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:37:25,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996020304] [2024-11-19 09:37:25,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:37:25,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:37:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:25,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:37:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:37:25,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-19 09:37:25,121 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) [2024-11-19 09:37:25,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:25,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-19 09:37:25,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:25,193 INFO L124 PetriNetUnfolderBase]: 69/171 cut-off events. [2024-11-19 09:37:25,193 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-19 09:37:25,194 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. [2024-11-19 09:37:25,195 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 23 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-11-19 09:37:25,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 154 flow [2024-11-19 09:37:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:37:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:37:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-11-19 09:37:25,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-11-19 09:37:25,197 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 46 transitions. [2024-11-19 09:37:25,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 154 flow [2024-11-19 09:37:25,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:37:25,198 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2024-11-19 09:37:25,198 INFO L260 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} [2024-11-19 09:37:25,199 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-19 09:37:25,199 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2024-11-19 09:37:25,199 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) [2024-11-19 09:37:25,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:25,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:25,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:37:25,199 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:25,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:25,214 INFO L85 PathProgramCache]: Analyzing trace with hash -834231567, now seen corresponding path program 2 times [2024-11-19 09:37:25,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:25,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826479240] [2024-11-19 09:37:25,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:25,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:25,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:37:25,256 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:25,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:25,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826479240] [2024-11-19 09:37:25,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826479240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:25,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418996703] [2024-11-19 09:37:25,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:25,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:25,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:25,337 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) [2024-11-19 09:37:25,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:37:25,411 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:37:25,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:25,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:37:25,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:25,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:25,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418996703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:25,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:25,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 09:37:25,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340322010] [2024-11-19 09:37:25,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:25,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:37:25,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:25,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:37:25,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:37:25,511 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 09:37:25,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-11-19 09:37:25,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:25,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 09:37:25,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:25,632 INFO L124 PetriNetUnfolderBase]: 167/379 cut-off events. [2024-11-19 09:37:25,632 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-11-19 09:37:25,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 379 events. 167/379 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1246 event pairs, 24 based on Foata normal form. 30/409 useless extension candidates. Maximal degree in co-relation 297. Up to 86 conditions per place. [2024-11-19 09:37:25,637 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 57 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2024-11-19 09:37:25,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 66 transitions, 348 flow [2024-11-19 09:37:25,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:37:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:37:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-19 09:37:25,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-11-19 09:37:25,640 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 6 states and 97 transitions. [2024-11-19 09:37:25,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 66 transitions, 348 flow [2024-11-19 09:37:25,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 66 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:37:25,642 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 108 flow [2024-11-19 09:37:25,642 INFO L260 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-11-19 09:37:25,643 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-11-19 09:37:25,643 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 108 flow [2024-11-19 09:37:25,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2024-11-19 09:37:25,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:25,643 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:25,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:37:25,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:25,845 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:25,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:25,845 INFO L85 PathProgramCache]: Analyzing trace with hash -36039780, now seen corresponding path program 3 times [2024-11-19 09:37:25,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:25,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373210128] [2024-11-19 09:37:25,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:37:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:25,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:37:25,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 09:37:25,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:25,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373210128] [2024-11-19 09:37:25,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373210128] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267645447] [2024-11-19 09:37:25,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:37:25,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:25,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:25,903 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) [2024-11-19 09:37:25,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:37:25,978 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:37:25,978 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:25,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 09:37:25,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 09:37:26,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 09:37:26,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267645447] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:26,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:26,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 09:37:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836496335] [2024-11-19 09:37:26,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:26,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:37:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:37:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:37:26,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 09:37:26,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 108 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) [2024-11-19 09:37:26,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:26,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 09:37:26,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:26,244 INFO L124 PetriNetUnfolderBase]: 294/695 cut-off events. [2024-11-19 09:37:26,244 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2024-11-19 09:37:26,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 695 events. 294/695 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2875 event pairs, 51 based on Foata normal form. 57/752 useless extension candidates. Maximal degree in co-relation 1232. Up to 156 conditions per place. [2024-11-19 09:37:26,251 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 67 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-11-19 09:37:26,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 77 transitions, 518 flow [2024-11-19 09:37:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:37:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:37:26,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-19 09:37:26,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-11-19 09:37:26,253 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 108 flow. Second operand 6 states and 97 transitions. [2024-11-19 09:37:26,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 77 transitions, 518 flow [2024-11-19 09:37:26,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 77 transitions, 478 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-19 09:37:26,258 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 140 flow [2024-11-19 09:37:26,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2024-11-19 09:37:26,259 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2024-11-19 09:37:26,259 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 140 flow [2024-11-19 09:37:26,259 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) [2024-11-19 09:37:26,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:26,259 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:26,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:37:26,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:26,460 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:26,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:26,461 INFO L85 PathProgramCache]: Analyzing trace with hash 198452272, now seen corresponding path program 4 times [2024-11-19 09:37:26,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:26,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014746713] [2024-11-19 09:37:26,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:37:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:26,493 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:37:26,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 09:37:26,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:26,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014746713] [2024-11-19 09:37:26,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014746713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:26,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798685803] [2024-11-19 09:37:26,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:37:26,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:26,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:26,605 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) [2024-11-19 09:37:26,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:37:26,691 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:37:26,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:26,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:37:26,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 09:37:26,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 09:37:26,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798685803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:26,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:26,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-19 09:37:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881723212] [2024-11-19 09:37:26,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:26,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:37:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:37:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:37:26,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 09:37:26,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 140 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 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) [2024-11-19 09:37:26,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:26,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 09:37:26,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:28,081 INFO L124 PetriNetUnfolderBase]: 899/2079 cut-off events. [2024-11-19 09:37:28,081 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2024-11-19 09:37:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6875 conditions, 2079 events. 899/2079 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10229 event pairs, 8 based on Foata normal form. 209/2288 useless extension candidates. Maximal degree in co-relation 3345. Up to 371 conditions per place. [2024-11-19 09:37:28,093 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 471 selfloop transitions, 138 changer transitions 0/613 dead transitions. [2024-11-19 09:37:28,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 613 transitions, 3748 flow [2024-11-19 09:37:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-19 09:37:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-11-19 09:37:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1058 transitions. [2024-11-19 09:37:28,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5445187853834277 [2024-11-19 09:37:28,099 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 140 flow. Second operand 67 states and 1058 transitions. [2024-11-19 09:37:28,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 613 transitions, 3748 flow [2024-11-19 09:37:28,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 613 transitions, 3628 flow, removed 54 selfloop flow, removed 1 redundant places. [2024-11-19 09:37:28,111 INFO L231 Difference]: Finished difference. Result has 154 places, 168 transitions, 1566 flow [2024-11-19 09:37:28,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1566, PETRI_PLACES=154, PETRI_TRANSITIONS=168} [2024-11-19 09:37:28,112 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2024-11-19 09:37:28,113 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 168 transitions, 1566 flow [2024-11-19 09:37:28,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 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) [2024-11-19 09:37:28,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:28,113 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:28,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:37:28,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:28,314 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:28,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash 518035977, now seen corresponding path program 5 times [2024-11-19 09:37:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:28,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272230705] [2024-11-19 09:37:28,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:37:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:28,351 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-19 09:37:28,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 5 proven. 235 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-19 09:37:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272230705] [2024-11-19 09:37:28,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272230705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522275832] [2024-11-19 09:37:28,615 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:37:28,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:28,616 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) [2024-11-19 09:37:28,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:37:28,746 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-19 09:37:28,747 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:28,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:37:28,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-19 09:37:28,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-19 09:37:29,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522275832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:29,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:29,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 25 [2024-11-19 09:37:29,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259220228] [2024-11-19 09:37:29,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:29,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:37:29,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:37:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:37:29,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 09:37:29,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 168 transitions, 1566 flow. Second operand has 25 states, 25 states have (on average 10.76) internal successors, (269), 25 states have internal predecessors, (269), 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) [2024-11-19 09:37:29,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:29,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 09:37:29,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:33,178 INFO L124 PetriNetUnfolderBase]: 2031/4760 cut-off events. [2024-11-19 09:37:33,179 INFO L125 PetriNetUnfolderBase]: For 153203/153204 co-relation queries the response was YES. [2024-11-19 09:37:33,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20751 conditions, 4760 events. 2031/4760 cut-off events. For 153203/153204 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 27119 event pairs, 59 based on Foata normal form. 414/5164 useless extension candidates. Maximal degree in co-relation 18638. Up to 819 conditions per place. [2024-11-19 09:37:33,218 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 1087 selfloop transitions, 350 changer transitions 0/1447 dead transitions. [2024-11-19 09:37:33,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 1447 transitions, 10840 flow [2024-11-19 09:37:33,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-11-19 09:37:33,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2024-11-19 09:37:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 2450 transitions. [2024-11-19 09:37:33,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5381067428069405 [2024-11-19 09:37:33,224 INFO L175 Difference]: Start difference. First operand has 154 places, 168 transitions, 1566 flow. Second operand 157 states and 2450 transitions. [2024-11-19 09:37:33,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 1447 transitions, 10840 flow [2024-11-19 09:37:33,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1447 transitions, 10678 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 09:37:33,360 INFO L231 Difference]: Finished difference. Result has 405 places, 388 transitions, 4740 flow [2024-11-19 09:37:33,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=157, PETRI_FLOW=4740, PETRI_PLACES=405, PETRI_TRANSITIONS=388} [2024-11-19 09:37:33,361 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 378 predicate places. [2024-11-19 09:37:33,362 INFO L471 AbstractCegarLoop]: Abstraction has has 405 places, 388 transitions, 4740 flow [2024-11-19 09:37:33,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.76) internal successors, (269), 25 states have internal predecessors, (269), 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) [2024-11-19 09:37:33,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:33,366 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:33,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:37:33,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:33,567 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:33,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:33,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1260338154, now seen corresponding path program 6 times [2024-11-19 09:37:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:33,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308150187] [2024-11-19 09:37:33,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:37:33,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:33,629 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-19 09:37:33,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 12 proven. 286 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-19 09:37:33,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308150187] [2024-11-19 09:37:33,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308150187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074034790] [2024-11-19 09:37:33,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:37:33,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:33,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:33,956 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) [2024-11-19 09:37:33,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:37:34,154 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-19 09:37:34,155 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:34,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 09:37:34,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 12 proven. 286 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-19 09:37:34,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 12 proven. 286 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-19 09:37:34,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074034790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:34,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-11-19 09:37:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461394028] [2024-11-19 09:37:34,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:34,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 09:37:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 09:37:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-19 09:37:34,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 09:37:34,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 388 transitions, 4740 flow. Second operand has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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) [2024-11-19 09:37:34,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:34,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 09:37:34,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:36,990 INFO L124 PetriNetUnfolderBase]: 3315/7754 cut-off events. [2024-11-19 09:37:36,991 INFO L125 PetriNetUnfolderBase]: For 1233468/1233468 co-relation queries the response was YES. [2024-11-19 09:37:37,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48453 conditions, 7754 events. 3315/7754 cut-off events. For 1233468/1233468 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 46902 event pairs, 176 based on Foata normal form. 459/8203 useless extension candidates. Maximal degree in co-relation 43404. Up to 1339 conditions per place. [2024-11-19 09:37:37,104 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 623 selfloop transitions, 279 changer transitions 0/918 dead transitions. [2024-11-19 09:37:37,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 918 transitions, 15390 flow [2024-11-19 09:37:37,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 09:37:37,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 09:37:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 375 transitions. [2024-11-19 09:37:37,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5877742946708464 [2024-11-19 09:37:37,107 INFO L175 Difference]: Start difference. First operand has 405 places, 388 transitions, 4740 flow. Second operand 22 states and 375 transitions. [2024-11-19 09:37:37,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 918 transitions, 15390 flow [2024-11-19 09:37:39,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 918 transitions, 14908 flow, removed 70 selfloop flow, removed 54 redundant places. [2024-11-19 09:37:39,122 INFO L231 Difference]: Finished difference. Result has 382 places, 498 transitions, 6426 flow [2024-11-19 09:37:39,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4258, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6426, PETRI_PLACES=382, PETRI_TRANSITIONS=498} [2024-11-19 09:37:39,123 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 355 predicate places. [2024-11-19 09:37:39,123 INFO L471 AbstractCegarLoop]: Abstraction has has 382 places, 498 transitions, 6426 flow [2024-11-19 09:37:39,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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) [2024-11-19 09:37:39,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:39,124 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:39,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 09:37:39,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:39,325 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:39,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1909948638, now seen corresponding path program 7 times [2024-11-19 09:37:39,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757835296] [2024-11-19 09:37:39,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:37:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-11-19 09:37:39,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:39,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757835296] [2024-11-19 09:37:39,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757835296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51180437] [2024-11-19 09:37:39,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:37:39,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:39,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:39,740 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) [2024-11-19 09:37:39,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:37:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:37:39,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:37:39,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-11-19 09:37:40,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-11-19 09:37:40,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51180437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:40,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:40,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-19 09:37:40,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654285487] [2024-11-19 09:37:40,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:40,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 09:37:40,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 09:37:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-19 09:37:40,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 09:37:40,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 498 transitions, 6426 flow. Second operand has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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) [2024-11-19 09:37:40,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:40,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 09:37:40,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:37:44,803 INFO L124 PetriNetUnfolderBase]: 5485/12820 cut-off events. [2024-11-19 09:37:44,804 INFO L125 PetriNetUnfolderBase]: For 4101135/4101145 co-relation queries the response was YES. [2024-11-19 09:37:45,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79428 conditions, 12820 events. 5485/12820 cut-off events. For 4101135/4101145 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 83432 event pairs, 239 based on Foata normal form. 682/13408 useless extension candidates. Maximal degree in co-relation 70521. Up to 2163 conditions per place. [2024-11-19 09:37:45,099 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 867 selfloop transitions, 306 changer transitions 0/1189 dead transitions. [2024-11-19 09:37:45,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1189 transitions, 18866 flow [2024-11-19 09:37:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 09:37:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 09:37:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 374 transitions. [2024-11-19 09:37:45,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-19 09:37:45,102 INFO L175 Difference]: Start difference. First operand has 382 places, 498 transitions, 6426 flow. Second operand 22 states and 374 transitions. [2024-11-19 09:37:45,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1189 transitions, 18866 flow [2024-11-19 09:37:49,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1189 transitions, 18228 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-19 09:37:49,188 INFO L231 Difference]: Finished difference. Result has 401 places, 622 transitions, 8372 flow [2024-11-19 09:37:49,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6140, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8372, PETRI_PLACES=401, PETRI_TRANSITIONS=622} [2024-11-19 09:37:49,189 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 374 predicate places. [2024-11-19 09:37:49,189 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 622 transitions, 8372 flow [2024-11-19 09:37:49,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 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) [2024-11-19 09:37:49,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:37:49,189 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:37:49,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 09:37:49,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:49,390 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 09:37:49,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:37:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1535257160, now seen corresponding path program 8 times [2024-11-19 09:37:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:37:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435673076] [2024-11-19 09:37:49,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:49,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:37:49,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:37:49,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:51,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:37:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435673076] [2024-11-19 09:37:51,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435673076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:37:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715773250] [2024-11-19 09:37:51,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:37:51,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:37:51,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:37:51,579 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:37:51,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:37:51,749 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:37:51,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:37:51,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-19 09:37:51,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:37:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:51,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:37:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:37:52,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715773250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:37:52,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:37:52,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-11-19 09:37:52,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590278631] [2024-11-19 09:37:52,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:37:52,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-19 09:37:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:37:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-19 09:37:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-11-19 09:37:52,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 09:37:52,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 622 transitions, 8372 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) [2024-11-19 09:37:52,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:37:52,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 09:37:52,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:38:08,911 INFO L124 PetriNetUnfolderBase]: 10320/27458 cut-off events. [2024-11-19 09:38:08,911 INFO L125 PetriNetUnfolderBase]: For 8691137/8691137 co-relation queries the response was YES. [2024-11-19 09:38:09,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322888 conditions, 27458 events. 10320/27458 cut-off events. For 8691137/8691137 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 229011 event pairs, 1318 based on Foata normal form. 1/27348 useless extension candidates. Maximal degree in co-relation 242471. Up to 4648 conditions per place. [2024-11-19 09:38:09,955 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 3308 selfloop transitions, 83 changer transitions 2/3435 dead transitions. [2024-11-19 09:38:09,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 3435 transitions, 57565 flow [2024-11-19 09:38:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-19 09:38:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-19 09:38:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 732 transitions. [2024-11-19 09:38:09,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736677115987461 [2024-11-19 09:38:09,960 INFO L175 Difference]: Start difference. First operand has 401 places, 622 transitions, 8372 flow. Second operand 44 states and 732 transitions. [2024-11-19 09:38:09,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 3435 transitions, 57565 flow