./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:23:41,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:23:41,586 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:23:41,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:23:41,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:23:41,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:23:41,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:23:41,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:23:41,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:23:41,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:23:41,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:23:41,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:23:41,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:23:41,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:23:41,619 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:23:41,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:23:41,620 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:23:41,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:23:41,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:23:41,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:23:41,621 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:23:41,624 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:23:41,625 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:23:41,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:23:41,625 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:23:41,625 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:23:41,626 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:23:41,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:23:41,626 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:23:41,626 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:23:41,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:23:41,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:23:41,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:23:41,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:23:41,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:23:41,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:23:41,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:23:41,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:23:41,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:23:41,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:23:41,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:23:41,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:23:41,631 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-10-14 19:23:41,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:23:41,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:23:41,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:23:41,957 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:23:41,958 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:23:41,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-10-14 19:23:43,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:23:43,682 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:23:43,682 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-10-14 19:23:43,696 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df48e94a9/582b64a65fdd489d86ae9b4ede29a6b7/FLAGf5bb68170 [2024-10-14 19:23:43,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df48e94a9/582b64a65fdd489d86ae9b4ede29a6b7 [2024-10-14 19:23:43,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:23:43,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:23:43,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:23:43,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:23:43,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:23:43,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:23:43" (1/1) ... [2024-10-14 19:23:43,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e17a66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:43, skipping insertion in model container [2024-10-14 19:23:43,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:23:43" (1/1) ... [2024-10-14 19:23:43,760 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:23:44,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:23:44,115 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:23:44,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:23:44,215 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:23:44,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44 WrapperNode [2024-10-14 19:23:44,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:23:44,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:23:44,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:23:44,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:23:44,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,260 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-10-14 19:23:44,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:23:44,263 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:23:44,263 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:23:44,263 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:23:44,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,276 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,295 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-14 19:23:44,296 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,296 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:23:44,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:23:44,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:23:44,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:23:44,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (1/1) ... [2024-10-14 19:23:44,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:23:44,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:44,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:23:44,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:23:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-14 19:23:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-14 19:23:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-14 19:23:44,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-14 19:23:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:23:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:23:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:23:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:23:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:23:44,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:23:44,469 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:23:44,584 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:23:44,587 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:23:44,718 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:23:44,719 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:23:44,820 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:23:44,821 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 19:23:44,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:23:44 BoogieIcfgContainer [2024-10-14 19:23:44,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:23:44,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:23:44,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:23:44,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:23:44,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:23:43" (1/3) ... [2024-10-14 19:23:44,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a4b024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:23:44, skipping insertion in model container [2024-10-14 19:23:44,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:23:44" (2/3) ... [2024-10-14 19:23:44,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a4b024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:23:44, skipping insertion in model container [2024-10-14 19:23:44,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:23:44" (3/3) ... [2024-10-14 19:23:44,834 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-10-14 19:23:44,852 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:23:44,852 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:23:44,852 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:23:44,908 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:23:44,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-10-14 19:23:44,993 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-10-14 19:23:44,994 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:23:44,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-14 19:23:44,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-10-14 19:23:45,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-10-14 19:23:45,016 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:23:45,025 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;@16ca8ed6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:23:45,026 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-14 19:23:45,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:23:45,041 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-10-14 19:23:45,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:23:45,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:45,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:45,044 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:45,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1038261642, now seen corresponding path program 1 times [2024-10-14 19:23:45,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:45,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972454975] [2024-10-14 19:23:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:45,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:45,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972454975] [2024-10-14 19:23:45,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972454975] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:45,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:45,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:23:45,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410055467] [2024-10-14 19:23:45,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:45,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:23:45,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:23:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:23:45,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-10-14 19:23:45,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:45,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:45,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-10-14 19:23:45,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:45,463 INFO L124 PetriNetUnfolderBase]: 70/157 cut-off events. [2024-10-14 19:23:45,463 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:23:45,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 157 events. 70/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 44 based on Foata normal form. 15/161 useless extension candidates. Maximal degree in co-relation 272. Up to 113 conditions per place. [2024-10-14 19:23:45,467 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-10-14 19:23:45,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-10-14 19:23:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:23:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:23:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-14 19:23:45,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-10-14 19:23:45,481 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-10-14 19:23:45,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-10-14 19:23:45,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:23:45,485 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-10-14 19:23:45,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-10-14 19:23:45,491 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-10-14 19:23:45,491 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-10-14 19:23:45,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:45,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:45,491 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:45,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:23:45,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:45,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:45,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1038262774, now seen corresponding path program 1 times [2024-10-14 19:23:45,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631212344] [2024-10-14 19:23:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:45,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:45,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631212344] [2024-10-14 19:23:45,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631212344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:45,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:45,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:23:45,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823743072] [2024-10-14 19:23:45,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:45,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:23:45,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:45,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:23:45,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:23:45,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:45,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:45,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:45,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:45,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:46,023 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2024-10-14 19:23:46,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:23:46,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 487 events. 273/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1990 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 921. Up to 181 conditions per place. [2024-10-14 19:23:46,031 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2024-10-14 19:23:46,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2024-10-14 19:23:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:23:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:23:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-10-14 19:23:46,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-10-14 19:23:46,035 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2024-10-14 19:23:46,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2024-10-14 19:23:46,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:23:46,037 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2024-10-14 19:23:46,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2024-10-14 19:23:46,042 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-10-14 19:23:46,042 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2024-10-14 19:23:46,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:46,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:46,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:46,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:23:46,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:46,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1117686194, now seen corresponding path program 1 times [2024-10-14 19:23:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:46,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444248605] [2024-10-14 19:23:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:46,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444248605] [2024-10-14 19:23:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444248605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:23:46,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997100453] [2024-10-14 19:23:46,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:46,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:23:46,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:46,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:23:46,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:23:46,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:46,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:46,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:46,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:46,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:46,594 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2024-10-14 19:23:46,595 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-10-14 19:23:46,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 704 events. 382/704 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3073 event pairs, 65 based on Foata normal form. 27/727 useless extension candidates. Maximal degree in co-relation 1591. Up to 246 conditions per place. [2024-10-14 19:23:46,608 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2024-10-14 19:23:46,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2024-10-14 19:23:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:23:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:23:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-10-14 19:23:46,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-10-14 19:23:46,612 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2024-10-14 19:23:46,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2024-10-14 19:23:46,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-14 19:23:46,619 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2024-10-14 19:23:46,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-10-14 19:23:46,620 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-10-14 19:23:46,621 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2024-10-14 19:23:46,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:46,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:46,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:46,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:23:46,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:46,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:46,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1000674482, now seen corresponding path program 2 times [2024-10-14 19:23:46,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:46,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838980892] [2024-10-14 19:23:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:46,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:46,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838980892] [2024-10-14 19:23:46,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838980892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:46,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:46,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 19:23:46,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514745384] [2024-10-14 19:23:46,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:46,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:23:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:46,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:23:46,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:23:46,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:46,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:46,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:46,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:46,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:47,008 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2024-10-14 19:23:47,009 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-10-14 19:23:47,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 611 events. 328/611 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2595 event pairs, 65 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 1723. Up to 234 conditions per place. [2024-10-14 19:23:47,016 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2024-10-14 19:23:47,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2024-10-14 19:23:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:23:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:23:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-10-14 19:23:47,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-10-14 19:23:47,022 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2024-10-14 19:23:47,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2024-10-14 19:23:47,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-14 19:23:47,031 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2024-10-14 19:23:47,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-10-14 19:23:47,032 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-10-14 19:23:47,033 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2024-10-14 19:23:47,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:47,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:47,034 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:47,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:23:47,035 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:47,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:47,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1356857717, now seen corresponding path program 1 times [2024-10-14 19:23:47,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:47,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290757013] [2024-10-14 19:23:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:47,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:47,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290757013] [2024-10-14 19:23:47,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290757013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:47,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:47,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:23:47,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31806191] [2024-10-14 19:23:47,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:47,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:23:47,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:23:47,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:23:47,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:47,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:47,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:47,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:47,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:47,458 INFO L124 PetriNetUnfolderBase]: 337/620 cut-off events. [2024-10-14 19:23:47,458 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2024-10-14 19:23:47,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 620 events. 337/620 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2632 event pairs, 74 based on Foata normal form. 18/634 useless extension candidates. Maximal degree in co-relation 1923. Up to 237 conditions per place. [2024-10-14 19:23:47,463 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2024-10-14 19:23:47,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2024-10-14 19:23:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:23:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:23:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-10-14 19:23:47,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2024-10-14 19:23:47,465 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2024-10-14 19:23:47,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2024-10-14 19:23:47,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-10-14 19:23:47,476 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2024-10-14 19:23:47,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-10-14 19:23:47,478 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-10-14 19:23:47,478 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2024-10-14 19:23:47,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:47,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:47,479 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:47,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:23:47,480 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:47,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash 392343623, now seen corresponding path program 2 times [2024-10-14 19:23:47,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:47,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116762292] [2024-10-14 19:23:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:47,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:47,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:47,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116762292] [2024-10-14 19:23:47,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116762292] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:23:47,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:23:47,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 19:23:47,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465853947] [2024-10-14 19:23:47,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:23:47,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:23:47,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:47,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:23:47,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:23:47,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:47,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:47,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:47,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:47,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:47,907 INFO L124 PetriNetUnfolderBase]: 445/807 cut-off events. [2024-10-14 19:23:47,907 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2024-10-14 19:23:47,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 807 events. 445/807 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3481 event pairs, 59 based on Foata normal form. 27/828 useless extension candidates. Maximal degree in co-relation 2610. Up to 151 conditions per place. [2024-10-14 19:23:47,914 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 23 changer transitions 30/101 dead transitions. [2024-10-14 19:23:47,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 742 flow [2024-10-14 19:23:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 19:23:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 19:23:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-10-14 19:23:47,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2024-10-14 19:23:47,916 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 171 transitions. [2024-10-14 19:23:47,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 742 flow [2024-10-14 19:23:47,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 688 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-10-14 19:23:47,925 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 393 flow [2024-10-14 19:23:47,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=393, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-10-14 19:23:47,926 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-10-14 19:23:47,926 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 393 flow [2024-10-14 19:23:47,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:47,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:47,927 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:47,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:23:47,927 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:47,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1383133169, now seen corresponding path program 1 times [2024-10-14 19:23:47,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:47,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611836072] [2024-10-14 19:23:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:48,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611836072] [2024-10-14 19:23:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611836072] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:48,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855936785] [2024-10-14 19:23:48,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:48,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:48,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:48,066 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) [2024-10-14 19:23:48,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:23:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:48,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:23:48,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:48,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:48,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855936785] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:48,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:48,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:23:48,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010907261] [2024-10-14 19:23:48,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:48,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:23:48,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:48,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:23:48,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:23:48,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:48,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 393 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:48,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:48,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:48,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:49,000 INFO L124 PetriNetUnfolderBase]: 571/1058 cut-off events. [2024-10-14 19:23:49,002 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2024-10-14 19:23:49,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1058 events. 571/1058 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4466 event pairs, 137 based on Foata normal form. 63/1117 useless extension candidates. Maximal degree in co-relation 4119. Up to 486 conditions per place. [2024-10-14 19:23:49,012 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 17 changer transitions 67/152 dead transitions. [2024-10-14 19:23:49,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 152 transitions, 1349 flow [2024-10-14 19:23:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 19:23:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 19:23:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2024-10-14 19:23:49,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2024-10-14 19:23:49,015 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 393 flow. Second operand 19 states and 288 transitions. [2024-10-14 19:23:49,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 152 transitions, 1349 flow [2024-10-14 19:23:49,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 152 transitions, 1270 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-10-14 19:23:49,029 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 524 flow [2024-10-14 19:23:49,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=524, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2024-10-14 19:23:49,031 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-10-14 19:23:49,031 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 524 flow [2024-10-14 19:23:49,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:49,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:49,031 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:49,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 19:23:49,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:49,236 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:49,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1985942713, now seen corresponding path program 2 times [2024-10-14 19:23:49,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:49,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218020906] [2024-10-14 19:23:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:49,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:49,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218020906] [2024-10-14 19:23:49,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218020906] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550836332] [2024-10-14 19:23:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:23:49,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:49,367 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) [2024-10-14 19:23:49,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:23:49,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:23:49,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:23:49,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:23:49,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:49,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:49,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550836332] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:49,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:49,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 19:23:49,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139436545] [2024-10-14 19:23:49,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:49,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 19:23:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 19:23:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-10-14 19:23:49,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:49,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 52 transitions, 524 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:49,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:49,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:49,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:50,379 INFO L124 PetriNetUnfolderBase]: 877/1628 cut-off events. [2024-10-14 19:23:50,379 INFO L125 PetriNetUnfolderBase]: For 29480/29480 co-relation queries the response was YES. [2024-10-14 19:23:50,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8520 conditions, 1628 events. 877/1628 cut-off events. For 29480/29480 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7910 event pairs, 70 based on Foata normal form. 72/1696 useless extension candidates. Maximal degree in co-relation 8480. Up to 249 conditions per place. [2024-10-14 19:23:50,396 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 88 selfloop transitions, 46 changer transitions 80/218 dead transitions. [2024-10-14 19:23:50,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 218 transitions, 2565 flow [2024-10-14 19:23:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-14 19:23:50,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-14 19:23:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 415 transitions. [2024-10-14 19:23:50,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5300127713920817 [2024-10-14 19:23:50,399 INFO L175 Difference]: Start difference. First operand has 90 places, 52 transitions, 524 flow. Second operand 27 states and 415 transitions. [2024-10-14 19:23:50,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 218 transitions, 2565 flow [2024-10-14 19:23:50,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 218 transitions, 2089 flow, removed 227 selfloop flow, removed 12 redundant places. [2024-10-14 19:23:50,427 INFO L231 Difference]: Finished difference. Result has 116 places, 70 transitions, 908 flow [2024-10-14 19:23:50,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=908, PETRI_PLACES=116, PETRI_TRANSITIONS=70} [2024-10-14 19:23:50,429 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-10-14 19:23:50,429 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 70 transitions, 908 flow [2024-10-14 19:23:50,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:50,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:50,429 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:50,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 19:23:50,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-14 19:23:50,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:50,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1216840336, now seen corresponding path program 1 times [2024-10-14 19:23:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:50,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877848087] [2024-10-14 19:23:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:50,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877848087] [2024-10-14 19:23:50,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877848087] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632273592] [2024-10-14 19:23:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:50,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:50,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:50,803 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) [2024-10-14 19:23:50,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:23:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:50,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:23:50,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:50,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:50,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632273592] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:51,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:51,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-14 19:23:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437502] [2024-10-14 19:23:51,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:51,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 19:23:51,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 19:23:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-14 19:23:51,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:51,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 70 transitions, 908 flow. Second operand has 16 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:51,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:51,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:51,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:51,980 INFO L124 PetriNetUnfolderBase]: 1093/2114 cut-off events. [2024-10-14 19:23:51,980 INFO L125 PetriNetUnfolderBase]: For 73277/73277 co-relation queries the response was YES. [2024-10-14 19:23:51,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13414 conditions, 2114 events. 1093/2114 cut-off events. For 73277/73277 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11477 event pairs, 94 based on Foata normal form. 72/2182 useless extension candidates. Maximal degree in co-relation 13362. Up to 409 conditions per place. [2024-10-14 19:23:52,001 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 86 selfloop transitions, 64 changer transitions 88/242 dead transitions. [2024-10-14 19:23:52,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 242 transitions, 3738 flow [2024-10-14 19:23:52,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-14 19:23:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-14 19:23:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 425 transitions. [2024-10-14 19:23:52,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5233990147783252 [2024-10-14 19:23:52,004 INFO L175 Difference]: Start difference. First operand has 116 places, 70 transitions, 908 flow. Second operand 28 states and 425 transitions. [2024-10-14 19:23:52,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 242 transitions, 3738 flow [2024-10-14 19:23:52,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 242 transitions, 3143 flow, removed 281 selfloop flow, removed 15 redundant places. [2024-10-14 19:23:52,087 INFO L231 Difference]: Finished difference. Result has 138 places, 92 transitions, 1417 flow [2024-10-14 19:23:52,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1417, PETRI_PLACES=138, PETRI_TRANSITIONS=92} [2024-10-14 19:23:52,089 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-10-14 19:23:52,089 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 92 transitions, 1417 flow [2024-10-14 19:23:52,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:52,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:52,089 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:52,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 19:23:52,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:52,294 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:52,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:52,294 INFO L85 PathProgramCache]: Analyzing trace with hash -974308042, now seen corresponding path program 2 times [2024-10-14 19:23:52,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:52,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597677463] [2024-10-14 19:23:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:52,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597677463] [2024-10-14 19:23:52,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597677463] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:52,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948374442] [2024-10-14 19:23:52,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:23:52,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:52,466 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) [2024-10-14 19:23:52,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:23:52,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:23:52,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:23:52,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:23:52,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:52,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948374442] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:52,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:52,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-10-14 19:23:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323458192] [2024-10-14 19:23:52,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:52,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-14 19:23:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-14 19:23:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-10-14 19:23:52,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:52,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 92 transitions, 1417 flow. Second operand has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:52,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:52,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:52,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:54,042 INFO L124 PetriNetUnfolderBase]: 1399/2654 cut-off events. [2024-10-14 19:23:54,043 INFO L125 PetriNetUnfolderBase]: For 156808/156808 co-relation queries the response was YES. [2024-10-14 19:23:54,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19910 conditions, 2654 events. 1399/2654 cut-off events. For 156808/156808 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14342 event pairs, 50 based on Foata normal form. 99/2749 useless extension candidates. Maximal degree in co-relation 19848. Up to 528 conditions per place. [2024-10-14 19:23:54,079 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 112 selfloop transitions, 95 changer transitions 113/324 dead transitions. [2024-10-14 19:23:54,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 324 transitions, 6002 flow [2024-10-14 19:23:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-14 19:23:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-10-14 19:23:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 551 transitions. [2024-10-14 19:23:54,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-10-14 19:23:54,082 INFO L175 Difference]: Start difference. First operand has 138 places, 92 transitions, 1417 flow. Second operand 36 states and 551 transitions. [2024-10-14 19:23:54,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 324 transitions, 6002 flow [2024-10-14 19:23:54,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 324 transitions, 5013 flow, removed 469 selfloop flow, removed 16 redundant places. [2024-10-14 19:23:54,236 INFO L231 Difference]: Finished difference. Result has 172 places, 120 transitions, 2180 flow [2024-10-14 19:23:54,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2180, PETRI_PLACES=172, PETRI_TRANSITIONS=120} [2024-10-14 19:23:54,239 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-10-14 19:23:54,239 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 120 transitions, 2180 flow [2024-10-14 19:23:54,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.055555555555555) internal successors, (181), 18 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:54,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:54,240 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:54,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 19:23:54,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:54,440 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:54,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1191975869, now seen corresponding path program 3 times [2024-10-14 19:23:54,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:54,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395918867] [2024-10-14 19:23:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:54,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:54,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395918867] [2024-10-14 19:23:54,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395918867] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:54,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712004822] [2024-10-14 19:23:54,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:23:54,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:54,693 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) [2024-10-14 19:23:54,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:23:54,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-14 19:23:54,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:23:54,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:23:54,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:54,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:23:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712004822] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:55,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:55,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-10-14 19:23:55,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31150288] [2024-10-14 19:23:55,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:55,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:23:55,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:23:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:23:55,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:55,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 120 transitions, 2180 flow. Second operand has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:55,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:55,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:55,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:23:57,291 INFO L124 PetriNetUnfolderBase]: 2155/3997 cut-off events. [2024-10-14 19:23:57,292 INFO L125 PetriNetUnfolderBase]: For 362028/362028 co-relation queries the response was YES. [2024-10-14 19:23:57,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35269 conditions, 3997 events. 2155/3997 cut-off events. For 362028/362028 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 20245 event pairs, 77 based on Foata normal form. 99/4090 useless extension candidates. Maximal degree in co-relation 35192. Up to 843 conditions per place. [2024-10-14 19:23:57,342 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 156 selfloop transitions, 141 changer transitions 146/447 dead transitions. [2024-10-14 19:23:57,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 447 transitions, 10132 flow [2024-10-14 19:23:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-14 19:23:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-10-14 19:23:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 749 transitions. [2024-10-14 19:23:57,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2024-10-14 19:23:57,347 INFO L175 Difference]: Start difference. First operand has 172 places, 120 transitions, 2180 flow. Second operand 49 states and 749 transitions. [2024-10-14 19:23:57,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 447 transitions, 10132 flow [2024-10-14 19:23:57,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 447 transitions, 8115 flow, removed 974 selfloop flow, removed 24 redundant places. [2024-10-14 19:23:57,709 INFO L231 Difference]: Finished difference. Result has 218 places, 170 transitions, 3457 flow [2024-10-14 19:23:57,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=3457, PETRI_PLACES=218, PETRI_TRANSITIONS=170} [2024-10-14 19:23:57,710 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-10-14 19:23:57,710 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 170 transitions, 3457 flow [2024-10-14 19:23:57,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.08) internal successors, (252), 25 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:57,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:23:57,711 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:23:57,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 19:23:57,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 19:23:57,914 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:23:57,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:23:57,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1711202446, now seen corresponding path program 4 times [2024-10-14 19:23:57,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:23:57,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751438683] [2024-10-14 19:23:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:23:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:23:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:23:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:23:58,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:23:58,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751438683] [2024-10-14 19:23:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751438683] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:23:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300245654] [2024-10-14 19:23:58,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:23:58,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:23:58,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:23:58,428 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) [2024-10-14 19:23:58,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:23:58,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:23:58,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:23:58,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 19:23:58,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:23:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:23:58,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:23:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:23:59,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300245654] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:23:59,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:23:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-10-14 19:23:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400266949] [2024-10-14 19:23:59,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:23:59,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-14 19:23:59,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:23:59,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-14 19:23:59,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 19:23:59,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:23:59,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 170 transitions, 3457 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:23:59,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:23:59,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:23:59,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:02,053 INFO L124 PetriNetUnfolderBase]: 2677/5129 cut-off events. [2024-10-14 19:24:02,053 INFO L125 PetriNetUnfolderBase]: For 813491/813491 co-relation queries the response was YES. [2024-10-14 19:24:02,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55316 conditions, 5129 events. 2677/5129 cut-off events. For 813491/813491 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 26062 event pairs, 857 based on Foata normal form. 189/5314 useless extension candidates. Maximal degree in co-relation 55221. Up to 3024 conditions per place. [2024-10-14 19:24:02,113 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 267 selfloop transitions, 55 changer transitions 221/547 dead transitions. [2024-10-14 19:24:02,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 547 transitions, 15947 flow [2024-10-14 19:24:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-14 19:24:02,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-10-14 19:24:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 904 transitions. [2024-10-14 19:24:02,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5110231769361221 [2024-10-14 19:24:02,121 INFO L175 Difference]: Start difference. First operand has 218 places, 170 transitions, 3457 flow. Second operand 61 states and 904 transitions. [2024-10-14 19:24:02,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 547 transitions, 15947 flow [2024-10-14 19:24:02,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 547 transitions, 12512 flow, removed 1679 selfloop flow, removed 21 redundant places. [2024-10-14 19:24:02,964 INFO L231 Difference]: Finished difference. Result has 293 places, 208 transitions, 4380 flow [2024-10-14 19:24:02,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=4380, PETRI_PLACES=293, PETRI_TRANSITIONS=208} [2024-10-14 19:24:02,966 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-10-14 19:24:02,966 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 208 transitions, 4380 flow [2024-10-14 19:24:02,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:02,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:02,966 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:02,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 19:24:03,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:03,168 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:24:03,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash -344593532, now seen corresponding path program 5 times [2024-10-14 19:24:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548179538] [2024-10-14 19:24:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:03,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:03,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548179538] [2024-10-14 19:24:03,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548179538] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:24:03,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590148831] [2024-10-14 19:24:03,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:24:03,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:03,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:03,575 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) [2024-10-14 19:24:03,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 19:24:03,648 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-10-14 19:24:03,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:24:03,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 19:24:03,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:24:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:03,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:24:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590148831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:24:04,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:24:04,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-10-14 19:24:04,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787082282] [2024-10-14 19:24:04,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:24:04,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-14 19:24:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-14 19:24:04,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 19:24:04,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:24:04,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 208 transitions, 4380 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:04,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:04,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:24:04,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:07,708 INFO L124 PetriNetUnfolderBase]: 3397/6755 cut-off events. [2024-10-14 19:24:07,709 INFO L125 PetriNetUnfolderBase]: For 1581849/1581849 co-relation queries the response was YES. [2024-10-14 19:24:07,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82592 conditions, 6755 events. 3397/6755 cut-off events. For 1581849/1581849 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 38314 event pairs, 586 based on Foata normal form. 189/6940 useless extension candidates. Maximal degree in co-relation 82462. Up to 2191 conditions per place. [2024-10-14 19:24:07,811 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 252 selfloop transitions, 176 changer transitions 235/667 dead transitions. [2024-10-14 19:24:07,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 667 transitions, 20915 flow [2024-10-14 19:24:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-10-14 19:24:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-10-14 19:24:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 1011 transitions. [2024-10-14 19:24:07,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5126774847870182 [2024-10-14 19:24:07,815 INFO L175 Difference]: Start difference. First operand has 293 places, 208 transitions, 4380 flow. Second operand 68 states and 1011 transitions. [2024-10-14 19:24:07,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 667 transitions, 20915 flow [2024-10-14 19:24:11,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 667 transitions, 17561 flow, removed 1663 selfloop flow, removed 31 redundant places. [2024-10-14 19:24:11,182 INFO L231 Difference]: Finished difference. Result has 349 places, 287 transitions, 6675 flow [2024-10-14 19:24:11,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=6675, PETRI_PLACES=349, PETRI_TRANSITIONS=287} [2024-10-14 19:24:11,183 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-10-14 19:24:11,183 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 287 transitions, 6675 flow [2024-10-14 19:24:11,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:11,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:11,184 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:11,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 19:24:11,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:11,385 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:24:11,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:11,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2036285016, now seen corresponding path program 6 times [2024-10-14 19:24:11,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:11,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382502301] [2024-10-14 19:24:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:11,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:11,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:11,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382502301] [2024-10-14 19:24:11,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382502301] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:24:11,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614290450] [2024-10-14 19:24:11,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:24:11,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:11,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:11,812 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:24:11,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 19:24:11,882 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-14 19:24:11,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:24:11,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 19:24:11,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:24:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:12,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:24:12,529 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:24:12,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614290450] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:24:12,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:24:12,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-10-14 19:24:12,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576798499] [2024-10-14 19:24:12,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:24:12,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-14 19:24:12,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-14 19:24:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2024-10-14 19:24:12,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:24:12,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 287 transitions, 6675 flow. Second operand has 42 states, 42 states have (on average 10.166666666666666) internal successors, (427), 42 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:12,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:12,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:24:12,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:17,040 INFO L124 PetriNetUnfolderBase]: 4333/8861 cut-off events. [2024-10-14 19:24:17,040 INFO L125 PetriNetUnfolderBase]: For 2948158/2948158 co-relation queries the response was YES. [2024-10-14 19:24:17,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122766 conditions, 8861 events. 4333/8861 cut-off events. For 2948158/2948158 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 55486 event pairs, 214 based on Foata normal form. 189/9046 useless extension candidates. Maximal degree in co-relation 122615. Up to 2301 conditions per place. [2024-10-14 19:24:17,177 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 222 selfloop transitions, 338 changer transitions 249/813 dead transitions. [2024-10-14 19:24:17,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 813 transitions, 28538 flow [2024-10-14 19:24:17,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-14 19:24:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2024-10-14 19:24:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 1123 transitions. [2024-10-14 19:24:17,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5163218390804598 [2024-10-14 19:24:17,184 INFO L175 Difference]: Start difference. First operand has 349 places, 287 transitions, 6675 flow. Second operand 75 states and 1123 transitions. [2024-10-14 19:24:17,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 813 transitions, 28538 flow [2024-10-14 19:24:23,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 813 transitions, 24143 flow, removed 2164 selfloop flow, removed 35 redundant places. [2024-10-14 19:24:23,676 INFO L231 Difference]: Finished difference. Result has 413 places, 390 transitions, 10130 flow [2024-10-14 19:24:23,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5000, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=10130, PETRI_PLACES=413, PETRI_TRANSITIONS=390} [2024-10-14 19:24:23,677 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 383 predicate places. [2024-10-14 19:24:23,677 INFO L471 AbstractCegarLoop]: Abstraction has has 413 places, 390 transitions, 10130 flow [2024-10-14 19:24:23,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.166666666666666) internal successors, (427), 42 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:23,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:23,678 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:23,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 19:24:23,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 19:24:23,879 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:24:23,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash -265129074, now seen corresponding path program 7 times [2024-10-14 19:24:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:23,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593944891] [2024-10-14 19:24:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:24:24,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593944891] [2024-10-14 19:24:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593944891] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:24:24,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415102628] [2024-10-14 19:24:24,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:24:24,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:24,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:24,237 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:24:24,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 19:24:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:24,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 19:24:24,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:24:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:24:24,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:24:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:24:24,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415102628] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:24:24,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:24:24,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2024-10-14 19:24:24,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436517683] [2024-10-14 19:24:24,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:24:24,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-14 19:24:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-14 19:24:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 19:24:24,900 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:24:24,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 390 transitions, 10130 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:24,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:24,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:24:24,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:31,480 INFO L124 PetriNetUnfolderBase]: 6196/12388 cut-off events. [2024-10-14 19:24:31,480 INFO L125 PetriNetUnfolderBase]: For 5789349/5789349 co-relation queries the response was YES. [2024-10-14 19:24:31,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194940 conditions, 12388 events. 6196/12388 cut-off events. For 5789349/5789349 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 81335 event pairs, 84 based on Foata normal form. 189/12573 useless extension candidates. Maximal degree in co-relation 194763. Up to 3168 conditions per place. [2024-10-14 19:24:31,675 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 273 selfloop transitions, 495 changer transitions 259/1031 dead transitions. [2024-10-14 19:24:31,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 1031 transitions, 40714 flow [2024-10-14 19:24:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-10-14 19:24:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-10-14 19:24:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1339 transitions. [2024-10-14 19:24:31,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246865203761756 [2024-10-14 19:24:31,678 INFO L175 Difference]: Start difference. First operand has 413 places, 390 transitions, 10130 flow. Second operand 88 states and 1339 transitions. [2024-10-14 19:24:31,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 1031 transitions, 40714 flow [2024-10-14 19:24:44,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 1031 transitions, 30481 flow, removed 5045 selfloop flow, removed 40 redundant places. [2024-10-14 19:24:44,840 INFO L231 Difference]: Finished difference. Result has 494 places, 526 transitions, 14527 flow [2024-10-14 19:24:44,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7469, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=14527, PETRI_PLACES=494, PETRI_TRANSITIONS=526} [2024-10-14 19:24:44,841 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 464 predicate places. [2024-10-14 19:24:44,841 INFO L471 AbstractCegarLoop]: Abstraction has has 494 places, 526 transitions, 14527 flow [2024-10-14 19:24:44,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:44,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:24:44,841 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:24:44,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 19:24:45,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 19:24:45,042 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-14 19:24:45,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:24:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1934244445, now seen corresponding path program 8 times [2024-10-14 19:24:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:24:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212449232] [2024-10-14 19:24:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:24:45,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:24:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:24:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:45,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:24:45,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212449232] [2024-10-14 19:24:45,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212449232] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:24:45,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764048291] [2024-10-14 19:24:45,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:24:45,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:24:45,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:24:45,514 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:24:45,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 19:24:45,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:24:45,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:24:45,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-14 19:24:45,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:24:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:45,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:24:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:24:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764048291] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:24:46,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:24:46,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 46 [2024-10-14 19:24:46,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772659306] [2024-10-14 19:24:46,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:24:46,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-14 19:24:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:24:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-14 19:24:46,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=1661, Unknown=0, NotChecked=0, Total=2162 [2024-10-14 19:24:46,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-10-14 19:24:46,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 526 transitions, 14527 flow. Second operand has 47 states, 47 states have (on average 10.106382978723405) internal successors, (475), 47 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:24:46,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:24:46,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-10-14 19:24:46,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:24:56,209 INFO L124 PetriNetUnfolderBase]: 7699/15444 cut-off events. [2024-10-14 19:24:56,209 INFO L125 PetriNetUnfolderBase]: For 8499145/8499145 co-relation queries the response was YES. [2024-10-14 19:24:56,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260119 conditions, 15444 events. 7699/15444 cut-off events. For 8499145/8499145 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 101189 event pairs, 38 based on Foata normal form. 306/15746 useless extension candidates. Maximal degree in co-relation 259907. Up to 3912 conditions per place. [2024-10-14 19:24:56,518 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 326 selfloop transitions, 621 changer transitions 325/1276 dead transitions. [2024-10-14 19:24:56,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1276 transitions, 56634 flow [2024-10-14 19:24:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-10-14 19:24:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-10-14 19:24:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1613 transitions. [2024-10-14 19:24:56,521 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5247234873129473 [2024-10-14 19:24:56,521 INFO L175 Difference]: Start difference. First operand has 494 places, 526 transitions, 14527 flow. Second operand 106 states and 1613 transitions. [2024-10-14 19:24:56,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1276 transitions, 56634 flow