./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:27:34,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:27:34,973 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:27:34,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:27:34,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:27:35,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:27:35,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:27:35,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:27:35,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:27:35,012 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:27:35,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:27:35,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:27:35,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:27:35,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:27:35,015 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:27:35,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:27:35,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:27:35,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:27:35,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:27:35,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:27:35,019 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:27:35,019 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:27:35,019 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:27:35,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:27:35,020 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:27:35,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:27:35,020 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:27:35,020 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:27:35,020 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:27:35,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:27:35,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:27:35,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:27:35,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:27:35,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:27:35,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:27:35,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:27:35,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:27:35,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:27:35,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:27:35,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:27:35,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:27:35,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:27:35,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-12 16:27:35,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:27:35,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:27:35,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:27:35,289 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:27:35,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:27:35,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-12 16:27:36,717 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:27:36,925 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:27:36,926 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-12 16:27:36,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f72d6a9/5086b325330d4919a41e8a42ccb3ce26/FLAG81fc829cf [2024-11-12 16:27:36,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81f72d6a9/5086b325330d4919a41e8a42ccb3ce26 [2024-11-12 16:27:36,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:27:36,957 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:27:36,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:27:36,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:27:36,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:27:36,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:27:36" (1/1) ... [2024-11-12 16:27:36,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148518cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:36, skipping insertion in model container [2024-11-12 16:27:36,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:27:36" (1/1) ... [2024-11-12 16:27:36,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:27:37,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:27:37,221 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:27:37,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:27:37,268 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:27:37,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37 WrapperNode [2024-11-12 16:27:37,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:27:37,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:27:37,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:27:37,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:27:37,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,289 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,308 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 101 [2024-11-12 16:27:37,308 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:27:37,309 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:27:37,309 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:27:37,309 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:27:37,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,336 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]. [2024-11-12 16:27:37,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:27:37,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:27:37,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:27:37,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:27:37,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (1/1) ... [2024-11-12 16:27:37,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:27:37,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:37,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 16:27:37,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 16:27:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:27:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:27:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:27:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:27:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:27:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-12 16:27:37,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-12 16:27:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-12 16:27:37,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-12 16:27:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:27:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:27:37,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:27:37,436 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:27:37,523 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:27:37,525 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:27:37,704 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:27:37,704 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:27:37,836 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:27:37,836 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 16:27:37,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:27:37 BoogieIcfgContainer [2024-11-12 16:27:37,837 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:27:37,841 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:27:37,841 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:27:37,845 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:27:37,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:27:36" (1/3) ... [2024-11-12 16:27:37,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec01c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:27:37, skipping insertion in model container [2024-11-12 16:27:37,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:37" (2/3) ... [2024-11-12 16:27:37,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec01c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:27:37, skipping insertion in model container [2024-11-12 16:27:37,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:27:37" (3/3) ... [2024-11-12 16:27:37,851 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-12 16:27:37,867 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:27:37,868 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:27:37,868 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:27:37,950 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 16:27:38,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-12 16:27:38,073 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-12 16:27:38,073 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 16:27:38,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-12 16:27:38,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-12 16:27:38,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-12 16:27:38,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:27:38,111 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;@129162e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:27:38,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-12 16:27:38,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:27:38,135 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-12 16:27:38,135 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 16:27:38,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:38,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:38,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:38,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash -300435696, now seen corresponding path program 1 times [2024-11-12 16:27:38,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:38,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021415828] [2024-11-12 16:27:38,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:38,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:38,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021415828] [2024-11-12 16:27:38,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021415828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:38,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:38,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:27:38,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899556816] [2024-11-12 16:27:38,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:38,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:27:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:27:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:27:38,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:27:38,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:38,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:38,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:27:38,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:39,237 INFO L124 PetriNetUnfolderBase]: 4206/5691 cut-off events. [2024-11-12 16:27:39,237 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-12 16:27:39,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11679 conditions, 5691 events. 4206/5691 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24065 event pairs, 1080 based on Foata normal form. 2/5302 useless extension candidates. Maximal degree in co-relation 10316. Up to 4714 conditions per place. [2024-11-12 16:27:39,284 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-12 16:27:39,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-12 16:27:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:27:39,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:27:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-12 16:27:39,297 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-12 16:27:39,299 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 81 transitions. [2024-11-12 16:27:39,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-12 16:27:39,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-12 16:27:39,314 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-12 16:27:39,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-12 16:27:39,322 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-12 16:27:39,323 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-12 16:27:39,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:39,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:39,323 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:39,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:27:39,324 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:39,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1919457899, now seen corresponding path program 1 times [2024-11-12 16:27:39,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:39,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421992033] [2024-11-12 16:27:39,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:39,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:39,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421992033] [2024-11-12 16:27:39,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421992033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:39,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:39,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:27:39,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581440596] [2024-11-12 16:27:39,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:39,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:27:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:27:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:27:39,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-12 16:27:39,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:39,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:39,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-12 16:27:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:40,513 INFO L124 PetriNetUnfolderBase]: 8890/11817 cut-off events. [2024-11-12 16:27:40,514 INFO L125 PetriNetUnfolderBase]: For 1485/1485 co-relation queries the response was YES. [2024-11-12 16:27:40,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26095 conditions, 11817 events. 8890/11817 cut-off events. For 1485/1485 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 56235 event pairs, 3018 based on Foata normal form. 0/11190 useless extension candidates. Maximal degree in co-relation 3504. Up to 6812 conditions per place. [2024-11-12 16:27:40,576 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 89 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2024-11-12 16:27:40,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 101 transitions, 464 flow [2024-11-12 16:27:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:27:40,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:27:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-12 16:27:40,578 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-12 16:27:40,578 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 130 transitions. [2024-11-12 16:27:40,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 101 transitions, 464 flow [2024-11-12 16:27:40,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:27:40,581 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 156 flow [2024-11-12 16:27:40,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-12 16:27:40,582 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-12 16:27:40,583 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 156 flow [2024-11-12 16:27:40,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:40,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:40,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:40,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:27:40,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:40,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1047840407, now seen corresponding path program 2 times [2024-11-12 16:27:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:40,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204330255] [2024-11-12 16:27:40,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:40,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:40,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:40,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204330255] [2024-11-12 16:27:40,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204330255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:27:40,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986630008] [2024-11-12 16:27:40,706 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:27:40,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:40,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:40,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:27:40,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:27:40,800 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:27:40,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:27:40,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:27:40,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:27:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:40,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:27:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:40,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986630008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:27:40,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:27:40,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-12 16:27:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048706731] [2024-11-12 16:27:40,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:27:40,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 16:27:40,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:40,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 16:27:40,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-12 16:27:40,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-12 16:27:40,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:40,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:40,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-12 16:27:40,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:42,904 INFO L124 PetriNetUnfolderBase]: 15902/20779 cut-off events. [2024-11-12 16:27:42,904 INFO L125 PetriNetUnfolderBase]: For 6679/6679 co-relation queries the response was YES. [2024-11-12 16:27:42,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53356 conditions, 20779 events. 15902/20779 cut-off events. For 6679/6679 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 100462 event pairs, 1195 based on Foata normal form. 354/21133 useless extension candidates. Maximal degree in co-relation 27004. Up to 3779 conditions per place. [2024-11-12 16:27:43,022 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 245 selfloop transitions, 35 changer transitions 1/282 dead transitions. [2024-11-12 16:27:43,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 282 transitions, 1380 flow [2024-11-12 16:27:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 16:27:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 16:27:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 352 transitions. [2024-11-12 16:27:43,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-11-12 16:27:43,026 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 156 flow. Second operand 14 states and 352 transitions. [2024-11-12 16:27:43,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 282 transitions, 1380 flow [2024-11-12 16:27:43,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 282 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:27:43,057 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 389 flow [2024-11-12 16:27:43,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2024-11-12 16:27:43,059 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-12 16:27:43,059 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 389 flow [2024-11-12 16:27:43,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:43,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:43,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:43,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 16:27:43,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:43,261 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:43,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash -838753637, now seen corresponding path program 1 times [2024-11-12 16:27:43,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:43,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001356314] [2024-11-12 16:27:43,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:43,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:43,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001356314] [2024-11-12 16:27:43,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001356314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:43,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:43,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:27:43,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288897517] [2024-11-12 16:27:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:43,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:27:43,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:27:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:27:43,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-12 16:27:43,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:43,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:43,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-12 16:27:43,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:44,672 INFO L124 PetriNetUnfolderBase]: 13851/18316 cut-off events. [2024-11-12 16:27:44,672 INFO L125 PetriNetUnfolderBase]: For 21189/21189 co-relation queries the response was YES. [2024-11-12 16:27:44,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55418 conditions, 18316 events. 13851/18316 cut-off events. For 21189/21189 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 90581 event pairs, 4183 based on Foata normal form. 36/18349 useless extension candidates. Maximal degree in co-relation 49359. Up to 9229 conditions per place. [2024-11-12 16:27:44,806 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 101 selfloop transitions, 12 changer transitions 15/132 dead transitions. [2024-11-12 16:27:44,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 824 flow [2024-11-12 16:27:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:27:44,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:27:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-12 16:27:44,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-12 16:27:44,808 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 389 flow. Second operand 5 states and 131 transitions. [2024-11-12 16:27:44,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 824 flow [2024-11-12 16:27:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 132 transitions, 791 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-12 16:27:45,111 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 394 flow [2024-11-12 16:27:45,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2024-11-12 16:27:45,112 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-12 16:27:45,113 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 394 flow [2024-11-12 16:27:45,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:45,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:45,113 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:45,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:27:45,114 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:45,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1050945765, now seen corresponding path program 3 times [2024-11-12 16:27:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885608912] [2024-11-12 16:27:45,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:45,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885608912] [2024-11-12 16:27:45,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885608912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:27:45,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774473428] [2024-11-12 16:27:45,197 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:27:45,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:45,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:45,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:27:45,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:27:45,273 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:27:45,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:27:45,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:27:45,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:27:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:45,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:27:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:45,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774473428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:27:45,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:27:45,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-12 16:27:45,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863898131] [2024-11-12 16:27:45,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:27:45,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:27:45,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:45,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:27:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:27:45,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-12 16:27:45,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:45,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:45,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-12 16:27:45,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:47,319 INFO L124 PetriNetUnfolderBase]: 22518/29285 cut-off events. [2024-11-12 16:27:47,319 INFO L125 PetriNetUnfolderBase]: For 42912/42912 co-relation queries the response was YES. [2024-11-12 16:27:47,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88459 conditions, 29285 events. 22518/29285 cut-off events. For 42912/42912 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 140668 event pairs, 4683 based on Foata normal form. 438/29723 useless extension candidates. Maximal degree in co-relation 72610. Up to 9338 conditions per place. [2024-11-12 16:27:47,654 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 156 selfloop transitions, 46 changer transitions 0/203 dead transitions. [2024-11-12 16:27:47,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 203 transitions, 1291 flow [2024-11-12 16:27:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 16:27:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 16:27:47,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-11-12 16:27:47,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-12 16:27:47,656 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 394 flow. Second operand 8 states and 201 transitions. [2024-11-12 16:27:47,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 203 transitions, 1291 flow [2024-11-12 16:27:47,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 203 transitions, 1250 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-12 16:27:47,884 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 686 flow [2024-11-12 16:27:47,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2024-11-12 16:27:47,885 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2024-11-12 16:27:47,885 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 686 flow [2024-11-12 16:27:47,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:47,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:47,885 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:47,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 16:27:48,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:48,086 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:48,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:48,087 INFO L85 PathProgramCache]: Analyzing trace with hash -518571503, now seen corresponding path program 4 times [2024-11-12 16:27:48,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:48,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414858412] [2024-11-12 16:27:48,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:48,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:48,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:48,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414858412] [2024-11-12 16:27:48,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414858412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:48,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:48,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:27:48,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697488941] [2024-11-12 16:27:48,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:48,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:27:48,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:27:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:27:48,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-12 16:27:48,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:48,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:48,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-12 16:27:48,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:49,932 INFO L124 PetriNetUnfolderBase]: 21156/28093 cut-off events. [2024-11-12 16:27:49,932 INFO L125 PetriNetUnfolderBase]: For 52631/52928 co-relation queries the response was YES. [2024-11-12 16:27:49,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92053 conditions, 28093 events. 21156/28093 cut-off events. For 52631/52928 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 146266 event pairs, 7314 based on Foata normal form. 73/28064 useless extension candidates. Maximal degree in co-relation 72386. Up to 13272 conditions per place. [2024-11-12 16:27:50,112 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 110 selfloop transitions, 19 changer transitions 10/157 dead transitions. [2024-11-12 16:27:50,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 157 transitions, 1196 flow [2024-11-12 16:27:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:27:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:27:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-12 16:27:50,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-12 16:27:50,114 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 686 flow. Second operand 5 states and 123 transitions. [2024-11-12 16:27:50,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 157 transitions, 1196 flow [2024-11-12 16:27:50,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 157 transitions, 1174 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-12 16:27:50,501 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 711 flow [2024-11-12 16:27:50,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=711, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-11-12 16:27:50,502 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-11-12 16:27:50,502 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 711 flow [2024-11-12 16:27:50,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:50,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:50,503 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:50,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 16:27:50,503 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:50,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:50,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1424821025, now seen corresponding path program 2 times [2024-11-12 16:27:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:50,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571222867] [2024-11-12 16:27:50,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:50,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571222867] [2024-11-12 16:27:50,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571222867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:27:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743989118] [2024-11-12 16:27:50,674 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:27:50,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:50,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:50,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:27:50,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:27:50,754 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:27:50,755 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:27:50,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:27:50,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:27:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:50,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:27:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:50,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743989118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:27:50,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:27:50,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-12 16:27:50,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274989461] [2024-11-12 16:27:50,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:27:50,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 16:27:50,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:50,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 16:27:50,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-12 16:27:50,825 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-12 16:27:50,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 711 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:50,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:50,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-12 16:27:50,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:53,273 INFO L124 PetriNetUnfolderBase]: 26693/34806 cut-off events. [2024-11-12 16:27:53,274 INFO L125 PetriNetUnfolderBase]: For 61130/61130 co-relation queries the response was YES. [2024-11-12 16:27:53,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114047 conditions, 34806 events. 26693/34806 cut-off events. For 61130/61130 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 174429 event pairs, 1602 based on Foata normal form. 240/35046 useless extension candidates. Maximal degree in co-relation 103669. Up to 6549 conditions per place. [2024-11-12 16:27:53,634 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 254 selfloop transitions, 80 changer transitions 2/337 dead transitions. [2024-11-12 16:27:53,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 337 transitions, 2300 flow [2024-11-12 16:27:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-12 16:27:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-12 16:27:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 339 transitions. [2024-11-12 16:27:53,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576530612244898 [2024-11-12 16:27:53,636 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 711 flow. Second operand 14 states and 339 transitions. [2024-11-12 16:27:53,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 337 transitions, 2300 flow [2024-11-12 16:27:54,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 337 transitions, 2233 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-12 16:27:54,112 INFO L231 Difference]: Finished difference. Result has 96 places, 134 transitions, 1185 flow [2024-11-12 16:27:54,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1185, PETRI_PLACES=96, PETRI_TRANSITIONS=134} [2024-11-12 16:27:54,113 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2024-11-12 16:27:54,113 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 134 transitions, 1185 flow [2024-11-12 16:27:54,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:54,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:54,113 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:54,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 16:27:54,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:54,314 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:54,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:54,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1728830531, now seen corresponding path program 5 times [2024-11-12 16:27:54,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:54,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900460308] [2024-11-12 16:27:54,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:54,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:54,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:54,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900460308] [2024-11-12 16:27:54,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900460308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:54,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:54,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:27:54,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368387030] [2024-11-12 16:27:54,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:54,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:27:54,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:54,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:27:54,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:27:54,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-12 16:27:54,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 134 transitions, 1185 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:54,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:54,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-12 16:27:54,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:57,141 INFO L124 PetriNetUnfolderBase]: 26294/34299 cut-off events. [2024-11-12 16:27:57,141 INFO L125 PetriNetUnfolderBase]: For 87475/87475 co-relation queries the response was YES. [2024-11-12 16:27:57,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121005 conditions, 34299 events. 26294/34299 cut-off events. For 87475/87475 co-relation queries the response was YES. Maximal size of possible extension queue 1097. Compared 170916 event pairs, 9513 based on Foata normal form. 168/34467 useless extension candidates. Maximal degree in co-relation 112416. Up to 22083 conditions per place. [2024-11-12 16:27:57,309 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 152 selfloop transitions, 32 changer transitions 0/185 dead transitions. [2024-11-12 16:27:57,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 185 transitions, 1674 flow [2024-11-12 16:27:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:27:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:27:57,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-12 16:27:57,310 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-11-12 16:27:57,310 INFO L175 Difference]: Start difference. First operand has 96 places, 134 transitions, 1185 flow. Second operand 5 states and 129 transitions. [2024-11-12 16:27:57,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 185 transitions, 1674 flow [2024-11-12 16:27:58,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 185 transitions, 1563 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-12 16:27:58,144 INFO L231 Difference]: Finished difference. Result has 95 places, 131 transitions, 1103 flow [2024-11-12 16:27:58,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1103, PETRI_PLACES=95, PETRI_TRANSITIONS=131} [2024-11-12 16:27:58,145 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2024-11-12 16:27:58,145 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 131 transitions, 1103 flow [2024-11-12 16:27:58,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:58,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:58,146 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:58,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:27:58,146 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:27:58,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1175264475, now seen corresponding path program 3 times [2024-11-12 16:27:58,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:58,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195605906] [2024-11-12 16:27:58,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:58,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:58,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:58,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195605906] [2024-11-12 16:27:58,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195605906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:27:58,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682917656] [2024-11-12 16:27:58,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:27:58,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:58,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:27:58,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 16:27:58,315 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:27:58,316 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:27:58,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:27:58,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:27:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:58,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:27:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:58,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682917656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:27:58,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:27:58,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-12 16:27:58,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943676030] [2024-11-12 16:27:58,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:27:58,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:27:58,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:27:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:27:58,404 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-12 16:27:58,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 131 transitions, 1103 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:27:58,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:58,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-12 16:27:58,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:01,041 INFO L124 PetriNetUnfolderBase]: 28464/37069 cut-off events. [2024-11-12 16:28:01,041 INFO L125 PetriNetUnfolderBase]: For 86471/86471 co-relation queries the response was YES. [2024-11-12 16:28:01,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127136 conditions, 37069 events. 28464/37069 cut-off events. For 86471/86471 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 186343 event pairs, 6723 based on Foata normal form. 240/37309 useless extension candidates. Maximal degree in co-relation 122013. Up to 14245 conditions per place. [2024-11-12 16:28:01,767 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 189 selfloop transitions, 54 changer transitions 0/244 dead transitions. [2024-11-12 16:28:01,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 244 transitions, 1973 flow [2024-11-12 16:28:01,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 16:28:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 16:28:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-11-12 16:28:01,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-12 16:28:01,769 INFO L175 Difference]: Start difference. First operand has 95 places, 131 transitions, 1103 flow. Second operand 8 states and 204 transitions. [2024-11-12 16:28:01,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 244 transitions, 1973 flow [2024-11-12 16:28:02,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 244 transitions, 1881 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 16:28:02,899 INFO L231 Difference]: Finished difference. Result has 100 places, 139 transitions, 1232 flow [2024-11-12 16:28:02,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=100, PETRI_TRANSITIONS=139} [2024-11-12 16:28:02,900 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 54 predicate places. [2024-11-12 16:28:02,900 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 139 transitions, 1232 flow [2024-11-12 16:28:02,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:02,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:02,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:02,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:03,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:03,106 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:28:03,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1563910173, now seen corresponding path program 6 times [2024-11-12 16:28:03,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:03,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329895727] [2024-11-12 16:28:03,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:03,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:03,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329895727] [2024-11-12 16:28:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329895727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184263526] [2024-11-12 16:28:03,187 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:28:03,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:03,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:03,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:03,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 16:28:03,264 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 16:28:03,265 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:03,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:28:03,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:03,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:03,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184263526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:03,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:03,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-12 16:28:03,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553621686] [2024-11-12 16:28:03,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:03,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:28:03,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:28:03,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:28:03,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-12 16:28:03,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 139 transitions, 1232 flow. Second operand has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:03,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:03,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-12 16:28:03,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:07,442 INFO L124 PetriNetUnfolderBase]: 33179/43314 cut-off events. [2024-11-12 16:28:07,442 INFO L125 PetriNetUnfolderBase]: For 92427/92427 co-relation queries the response was YES. [2024-11-12 16:28:07,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150246 conditions, 43314 events. 33179/43314 cut-off events. For 92427/92427 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 224794 event pairs, 2541 based on Foata normal form. 270/43584 useless extension candidates. Maximal degree in co-relation 144886. Up to 8574 conditions per place. [2024-11-12 16:28:07,745 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 285 selfloop transitions, 87 changer transitions 1/374 dead transitions. [2024-11-12 16:28:07,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 374 transitions, 2777 flow [2024-11-12 16:28:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 16:28:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 16:28:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 374 transitions. [2024-11-12 16:28:07,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5936507936507937 [2024-11-12 16:28:07,747 INFO L175 Difference]: Start difference. First operand has 100 places, 139 transitions, 1232 flow. Second operand 15 states and 374 transitions. [2024-11-12 16:28:07,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 374 transitions, 2777 flow [2024-11-12 16:28:09,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 374 transitions, 2647 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-11-12 16:28:09,472 INFO L231 Difference]: Finished difference. Result has 113 places, 154 transitions, 1477 flow [2024-11-12 16:28:09,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1477, PETRI_PLACES=113, PETRI_TRANSITIONS=154} [2024-11-12 16:28:09,472 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-11-12 16:28:09,473 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 154 transitions, 1477 flow [2024-11-12 16:28:09,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.818181818181818) internal successors, (108), 11 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:09,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:09,473 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:09,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 16:28:09,674 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,SelfDestructingSolverStorable9 [2024-11-12 16:28:09,674 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:28:09,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:09,675 INFO L85 PathProgramCache]: Analyzing trace with hash -251727371, now seen corresponding path program 4 times [2024-11-12 16:28:09,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:09,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520557527] [2024-11-12 16:28:09,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:09,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:09,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:09,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520557527] [2024-11-12 16:28:09,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520557527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:28:09,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:28:09,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:28:09,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211479187] [2024-11-12 16:28:09,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:09,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:28:09,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:09,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:28:09,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:28:09,748 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-12 16:28:09,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 154 transitions, 1477 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:09,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:09,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-12 16:28:09,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:12,847 INFO L124 PetriNetUnfolderBase]: 30674/40430 cut-off events. [2024-11-12 16:28:12,847 INFO L125 PetriNetUnfolderBase]: For 108912/109009 co-relation queries the response was YES. [2024-11-12 16:28:13,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144162 conditions, 40430 events. 30674/40430 cut-off events. For 108912/109009 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 216921 event pairs, 10789 based on Foata normal form. 36/40282 useless extension candidates. Maximal degree in co-relation 134929. Up to 26178 conditions per place. [2024-11-12 16:28:13,138 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 140 selfloop transitions, 30 changer transitions 10/202 dead transitions. [2024-11-12 16:28:13,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 202 transitions, 1975 flow [2024-11-12 16:28:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:28:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:28:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-11-12 16:28:13,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-11-12 16:28:13,140 INFO L175 Difference]: Start difference. First operand has 113 places, 154 transitions, 1477 flow. Second operand 5 states and 122 transitions. [2024-11-12 16:28:13,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 202 transitions, 1975 flow [2024-11-12 16:28:14,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 202 transitions, 1870 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-11-12 16:28:14,486 INFO L231 Difference]: Finished difference. Result has 111 places, 153 transitions, 1423 flow [2024-11-12 16:28:14,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1423, PETRI_PLACES=111, PETRI_TRANSITIONS=153} [2024-11-12 16:28:14,487 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2024-11-12 16:28:14,487 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 153 transitions, 1423 flow [2024-11-12 16:28:14,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:14,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:14,488 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:14,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 16:28:14,488 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:28:14,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1524876379, now seen corresponding path program 5 times [2024-11-12 16:28:14,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:14,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807632954] [2024-11-12 16:28:14,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:14,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:14,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:14,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807632954] [2024-11-12 16:28:14,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807632954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:14,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956269199] [2024-11-12 16:28:14,551 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:28:14,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:14,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:14,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 16:28:14,610 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:28:14,610 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:14,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:28:14,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:14,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:14,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956269199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:14,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:14,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-12 16:28:14,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713917969] [2024-11-12 16:28:14,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:14,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:28:14,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:28:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:28:14,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-12 16:28:14,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 153 transitions, 1423 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:14,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:14,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-12 16:28:14,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:18,161 INFO L124 PetriNetUnfolderBase]: 37226/48657 cut-off events. [2024-11-12 16:28:18,162 INFO L125 PetriNetUnfolderBase]: For 110425/110425 co-relation queries the response was YES. [2024-11-12 16:28:18,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169369 conditions, 48657 events. 37226/48657 cut-off events. For 110425/110425 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 257866 event pairs, 2802 based on Foata normal form. 240/48897 useless extension candidates. Maximal degree in co-relation 160293. Up to 10160 conditions per place. [2024-11-12 16:28:18,464 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 285 selfloop transitions, 94 changer transitions 1/381 dead transitions. [2024-11-12 16:28:18,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 381 transitions, 2971 flow [2024-11-12 16:28:18,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 16:28:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 16:28:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 367 transitions. [2024-11-12 16:28:18,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5825396825396826 [2024-11-12 16:28:18,467 INFO L175 Difference]: Start difference. First operand has 111 places, 153 transitions, 1423 flow. Second operand 15 states and 367 transitions. [2024-11-12 16:28:18,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 381 transitions, 2971 flow [2024-11-12 16:28:20,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 381 transitions, 2883 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-12 16:28:20,341 INFO L231 Difference]: Finished difference. Result has 122 places, 169 transitions, 1723 flow [2024-11-12 16:28:20,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1723, PETRI_PLACES=122, PETRI_TRANSITIONS=169} [2024-11-12 16:28:20,342 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2024-11-12 16:28:20,342 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 169 transitions, 1723 flow [2024-11-12 16:28:20,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:20,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:20,342 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:20,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:20,543 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 [2024-11-12 16:28:20,543 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:28:20,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2071343447, now seen corresponding path program 7 times [2024-11-12 16:28:20,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:20,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711800452] [2024-11-12 16:28:20,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:20,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:20,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:20,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711800452] [2024-11-12 16:28:20,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711800452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:28:20,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:28:20,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:28:20,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802999396] [2024-11-12 16:28:20,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:20,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:28:20,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:20,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:28:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:28:20,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-12 16:28:20,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 169 transitions, 1723 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:20,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:20,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-12 16:28:20,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:23,509 INFO L124 PetriNetUnfolderBase]: 32726/43249 cut-off events. [2024-11-12 16:28:23,509 INFO L125 PetriNetUnfolderBase]: For 140226/140686 co-relation queries the response was YES. [2024-11-12 16:28:24,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158259 conditions, 43249 events. 32726/43249 cut-off events. For 140226/140686 co-relation queries the response was YES. Maximal size of possible extension queue 1702. Compared 235579 event pairs, 12283 based on Foata normal form. 171/43251 useless extension candidates. Maximal degree in co-relation 149341. Up to 23130 conditions per place. [2024-11-12 16:28:24,137 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 142 selfloop transitions, 35 changer transitions 8/211 dead transitions. [2024-11-12 16:28:24,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 211 transitions, 2204 flow [2024-11-12 16:28:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:28:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:28:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-12 16:28:24,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-11-12 16:28:24,139 INFO L175 Difference]: Start difference. First operand has 122 places, 169 transitions, 1723 flow. Second operand 5 states and 118 transitions. [2024-11-12 16:28:24,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 211 transitions, 2204 flow [2024-11-12 16:28:25,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 211 transitions, 2078 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-11-12 16:28:25,679 INFO L231 Difference]: Finished difference. Result has 121 places, 168 transitions, 1659 flow [2024-11-12 16:28:25,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1659, PETRI_PLACES=121, PETRI_TRANSITIONS=168} [2024-11-12 16:28:25,680 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2024-11-12 16:28:25,680 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 168 transitions, 1659 flow [2024-11-12 16:28:25,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:25,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:25,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:25,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 16:28:25,681 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:28:25,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:25,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1649902403, now seen corresponding path program 6 times [2024-11-12 16:28:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036311170] [2024-11-12 16:28:25,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:25,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036311170] [2024-11-12 16:28:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036311170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:28:25,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:28:25,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:28:25,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549848582] [2024-11-12 16:28:25,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:25,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:28:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:25,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:28:25,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:28:25,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-12 16:28:25,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 168 transitions, 1659 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:25,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:25,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-12 16:28:25,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:28,527 INFO L124 PetriNetUnfolderBase]: 32141/42301 cut-off events. [2024-11-12 16:28:28,527 INFO L125 PetriNetUnfolderBase]: For 129256/130053 co-relation queries the response was YES. [2024-11-12 16:28:28,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153085 conditions, 42301 events. 32141/42301 cut-off events. For 129256/130053 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 225749 event pairs, 12514 based on Foata normal form. 134/42145 useless extension candidates. Maximal degree in co-relation 134607. Up to 22569 conditions per place. [2024-11-12 16:28:28,792 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 142 selfloop transitions, 34 changer transitions 10/212 dead transitions. [2024-11-12 16:28:28,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 212 transitions, 2148 flow [2024-11-12 16:28:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:28:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:28:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-12 16:28:28,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-12 16:28:28,793 INFO L175 Difference]: Start difference. First operand has 121 places, 168 transitions, 1659 flow. Second operand 5 states and 119 transitions. [2024-11-12 16:28:28,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 212 transitions, 2148 flow [2024-11-12 16:28:29,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 212 transitions, 2076 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 16:28:29,189 INFO L231 Difference]: Finished difference. Result has 120 places, 167 transitions, 1642 flow [2024-11-12 16:28:29,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1642, PETRI_PLACES=120, PETRI_TRANSITIONS=167} [2024-11-12 16:28:29,190 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 74 predicate places. [2024-11-12 16:28:29,190 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 167 transitions, 1642 flow [2024-11-12 16:28:29,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:29,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:29,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:29,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 16:28:29,191 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-12 16:28:29,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:29,191 INFO L85 PathProgramCache]: Analyzing trace with hash -301612114, now seen corresponding path program 1 times [2024-11-12 16:28:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:29,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91180562] [2024-11-12 16:28:29,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:29,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91180562] [2024-11-12 16:28:29,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91180562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:29,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486749021] [2024-11-12 16:28:29,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:29,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:29,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:29,280 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:29,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 16:28:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:29,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 16:28:29,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:29,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:29,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486749021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:29,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:29,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-12 16:28:29,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368375491] [2024-11-12 16:28:29,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:29,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 16:28:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 16:28:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 16:28:29,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-12 16:28:29,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 167 transitions, 1642 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:29,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:29,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-12 16:28:29,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand