./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../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-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:47:20,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:47:20,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:47:20,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:47:20,490 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:47:20,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:47:20,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:47:20,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:47:20,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:47:20,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:47:20,519 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:47:20,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:47:20,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:47:20,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:47:20,520 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:47:20,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:47:20,521 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:47:20,521 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:47:20,521 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:47:20,522 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:47:20,522 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:47:20,525 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:47:20,525 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:47:20,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:47:20,526 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:47:20,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:47:20,526 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:47:20,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:47:20,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:47:20,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:47:20,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:47:20,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:47:20,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:47:20,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:47:20,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:47:20,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:47:20,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:47:20,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:47:20,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:47:20,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:47:20,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:47:20,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:47:20,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-22 21:47:20,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:47:20,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:47:20,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:47:20,781 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:47:20,781 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:47:20,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-22 21:47:22,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:47:22,325 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:47:22,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-22 21:47:22,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e84ab5d1/7fe587e51d4f43aca5369f07b70868bf/FLAG67adcf4be [2024-11-22 21:47:22,721 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e84ab5d1/7fe587e51d4f43aca5369f07b70868bf [2024-11-22 21:47:22,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:47:22,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:47:22,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:47:22,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:47:22,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:47:22,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:22" (1/1) ... [2024-11-22 21:47:22,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f004362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:22, skipping insertion in model container [2024-11-22 21:47:22,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:22" (1/1) ... [2024-11-22 21:47:22,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:47:23,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:47:23,008 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:47:23,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:47:23,047 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:47:23,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23 WrapperNode [2024-11-22 21:47:23,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:47:23,049 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:47:23,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:47:23,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:47:23,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,093 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 101 [2024-11-22 21:47:23,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:47:23,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:47:23,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:47:23,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:47:23,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,107 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,126 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]. [2024-11-22 21:47:23,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:47:23,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:47:23,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:47:23,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:47:23,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (1/1) ... [2024-11-22 21:47:23,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:47:23,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:23,182 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) [2024-11-22 21:47:23,186 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 [2024-11-22 21:47:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:47:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:47:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:47:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:47:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:47:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 21:47:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 21:47:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-22 21:47:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-22 21:47:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:47:23,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:47:23,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:47:23,230 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:47:23,345 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:47:23,347 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:47:23,580 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:47:23,581 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:47:23,727 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:47:23,727 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 21:47:23,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:47:23 BoogieIcfgContainer [2024-11-22 21:47:23,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:47:23,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:47:23,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:47:23,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:47:23,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:47:22" (1/3) ... [2024-11-22 21:47:23,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b877883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:47:23, skipping insertion in model container [2024-11-22 21:47:23,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:23" (2/3) ... [2024-11-22 21:47:23,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b877883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:47:23, skipping insertion in model container [2024-11-22 21:47:23,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:47:23" (3/3) ... [2024-11-22 21:47:23,735 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-22 21:47:23,748 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:47:23,748 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:47:23,748 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:47:23,796 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 21:47:23,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-22 21:47:23,879 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-22 21:47:23,879 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:47:23,883 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. [2024-11-22 21:47:23,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-22 21:47:23,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-22 21:47:23,901 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:47:23,913 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;@4887988b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:47:23,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 21:47:23,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:47:23,933 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-22 21:47:23,933 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:47:23,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:23,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:23,934 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)] === [2024-11-22 21:47:23,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:23,940 INFO L85 PathProgramCache]: Analyzing trace with hash -300435696, now seen corresponding path program 1 times [2024-11-22 21:47:23,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:23,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104866040] [2024-11-22 21:47:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:23,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:24,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104866040] [2024-11-22 21:47:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104866040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:24,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:24,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:47:24,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562048848] [2024-11-22 21:47:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:24,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:47:24,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:24,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:47:24,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:47:24,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:47:24,242 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) [2024-11-22 21:47:24,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:24,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:47:24,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:24,829 INFO L124 PetriNetUnfolderBase]: 4206/5691 cut-off events. [2024-11-22 21:47:24,829 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-22 21:47:24,839 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. [2024-11-22 21:47:24,857 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-22 21:47:24,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-22 21:47:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:47:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:47:24,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-22 21:47:24,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-22 21:47:24,868 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 81 transitions. [2024-11-22 21:47:24,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-22 21:47:24,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-22 21:47:24,878 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-22 21:47:24,879 INFO L260 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} [2024-11-22 21:47:24,882 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-22 21:47:24,882 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-22 21:47:24,882 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) [2024-11-22 21:47:24,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:24,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:24,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:47:24,883 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)] === [2024-11-22 21:47:24,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:24,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1919457899, now seen corresponding path program 1 times [2024-11-22 21:47:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:24,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215955768] [2024-11-22 21:47:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:24,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:24,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:24,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215955768] [2024-11-22 21:47:24,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215955768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:24,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:24,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:24,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717056229] [2024-11-22 21:47:24,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:24,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:25,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:25,000 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) [2024-11-22 21:47:25,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:25,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:25,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:25,775 INFO L124 PetriNetUnfolderBase]: 8890/11817 cut-off events. [2024-11-22 21:47:25,775 INFO L125 PetriNetUnfolderBase]: For 1485/1485 co-relation queries the response was YES. [2024-11-22 21:47:25,784 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. [2024-11-22 21:47:25,830 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 89 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2024-11-22 21:47:25,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 101 transitions, 464 flow [2024-11-22 21:47:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-22 21:47:25,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-22 21:47:25,832 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 130 transitions. [2024-11-22 21:47:25,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 101 transitions, 464 flow [2024-11-22 21:47:25,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:25,834 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 156 flow [2024-11-22 21:47:25,835 INFO L260 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} [2024-11-22 21:47:25,835 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-22 21:47:25,835 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 156 flow [2024-11-22 21:47:25,836 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) [2024-11-22 21:47:25,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:25,836 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:25,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:47:25,836 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)] === [2024-11-22 21:47:25,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:25,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1047840407, now seen corresponding path program 2 times [2024-11-22 21:47:25,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:25,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819425302] [2024-11-22 21:47:25,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:25,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:25,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:25,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:25,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:25,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819425302] [2024-11-22 21:47:25,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819425302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:25,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216934087] [2024-11-22 21:47:25,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:25,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:25,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:25,919 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) [2024-11-22 21:47:25,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:47:25,983 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:25,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:25,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:47:25,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:26,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:26,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216934087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:26,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:26,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2024-11-22 21:47:26,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963246649] [2024-11-22 21:47:26,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:26,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 21:47:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 21:47:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:47:26,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:26,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 156 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2024-11-22 21:47:26,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:26,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:26,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:27,465 INFO L124 PetriNetUnfolderBase]: 15902/20779 cut-off events. [2024-11-22 21:47:27,466 INFO L125 PetriNetUnfolderBase]: For 6679/6679 co-relation queries the response was YES. [2024-11-22 21:47:27,483 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. [2024-11-22 21:47:27,555 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 245 selfloop transitions, 35 changer transitions 1/282 dead transitions. [2024-11-22 21:47:27,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 282 transitions, 1380 flow [2024-11-22 21:47:27,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:47:27,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 21:47:27,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 352 transitions. [2024-11-22 21:47:27,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-11-22 21:47:27,560 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 156 flow. Second operand 14 states and 352 transitions. [2024-11-22 21:47:27,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 282 transitions, 1380 flow [2024-11-22 21:47:27,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 282 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:47:27,584 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 389 flow [2024-11-22 21:47:27,584 INFO L260 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} [2024-11-22 21:47:27,585 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-11-22 21:47:27,585 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 389 flow [2024-11-22 21:47:27,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2024-11-22 21:47:27,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:27,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:27,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:47:27,789 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 [2024-11-22 21:47:27,790 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)] === [2024-11-22 21:47:27,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:27,791 INFO L85 PathProgramCache]: Analyzing trace with hash -838753637, now seen corresponding path program 1 times [2024-11-22 21:47:27,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:27,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388187908] [2024-11-22 21:47:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:27,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388187908] [2024-11-22 21:47:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388187908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:27,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283176979] [2024-11-22 21:47:27,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:27,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:27,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:27,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:27,856 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) [2024-11-22 21:47:27,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:27,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:27,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:29,090 INFO L124 PetriNetUnfolderBase]: 13851/18316 cut-off events. [2024-11-22 21:47:29,091 INFO L125 PetriNetUnfolderBase]: For 21189/21189 co-relation queries the response was YES. [2024-11-22 21:47:29,122 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 717. Compared 91142 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. [2024-11-22 21:47:29,181 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 101 selfloop transitions, 12 changer transitions 15/132 dead transitions. [2024-11-22 21:47:29,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 824 flow [2024-11-22 21:47:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-22 21:47:29,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-22 21:47:29,183 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 389 flow. Second operand 5 states and 131 transitions. [2024-11-22 21:47:29,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 824 flow [2024-11-22 21:47:29,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 132 transitions, 791 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:29,427 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 394 flow [2024-11-22 21:47:29,427 INFO L260 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} [2024-11-22 21:47:29,428 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-11-22 21:47:29,428 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 394 flow [2024-11-22 21:47:29,428 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) [2024-11-22 21:47:29,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:29,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:29,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:47:29,429 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)] === [2024-11-22 21:47:29,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1487780967, now seen corresponding path program 2 times [2024-11-22 21:47:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:29,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652984653] [2024-11-22 21:47:29,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:29,450 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:29,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:29,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652984653] [2024-11-22 21:47:29,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652984653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713049378] [2024-11-22 21:47:29,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:29,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:29,531 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) [2024-11-22 21:47:29,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:47:29,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:29,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:29,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:47:29,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:29,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:29,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713049378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:29,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-22 21:47:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811337209] [2024-11-22 21:47:29,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:29,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 21:47:29,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:29,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 21:47:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:47:29,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:29,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 394 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) [2024-11-22 21:47:29,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:29,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:29,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:31,890 INFO L124 PetriNetUnfolderBase]: 24630/32113 cut-off events. [2024-11-22 21:47:31,890 INFO L125 PetriNetUnfolderBase]: For 39763/39763 co-relation queries the response was YES. [2024-11-22 21:47:31,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98361 conditions, 32113 events. 24630/32113 cut-off events. For 39763/39763 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 158881 event pairs, 1294 based on Foata normal form. 324/32437 useless extension candidates. Maximal degree in co-relation 85528. Up to 5958 conditions per place. [2024-11-22 21:47:32,052 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 253 selfloop transitions, 71 changer transitions 2/327 dead transitions. [2024-11-22 21:47:32,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 327 transitions, 1992 flow [2024-11-22 21:47:32,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:47:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 21:47:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 340 transitions. [2024-11-22 21:47:32,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5782312925170068 [2024-11-22 21:47:32,054 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 394 flow. Second operand 14 states and 340 transitions. [2024-11-22 21:47:32,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 327 transitions, 1992 flow [2024-11-22 21:47:32,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 327 transitions, 1928 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-22 21:47:32,580 INFO L231 Difference]: Finished difference. Result has 87 places, 121 transitions, 966 flow [2024-11-22 21:47:32,581 INFO L260 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=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=966, PETRI_PLACES=87, PETRI_TRANSITIONS=121} [2024-11-22 21:47:32,581 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-11-22 21:47:32,581 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 121 transitions, 966 flow [2024-11-22 21:47:32,582 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) [2024-11-22 21:47:32,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:32,582 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:32,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:47:32,782 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 [2024-11-22 21:47:32,783 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)] === [2024-11-22 21:47:32,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash -518571503, now seen corresponding path program 3 times [2024-11-22 21:47:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:32,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574897041] [2024-11-22 21:47:32,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:32,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:32,796 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:47:32,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:32,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:32,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574897041] [2024-11-22 21:47:32,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574897041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:32,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:32,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:32,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512066100] [2024-11-22 21:47:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:32,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:32,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:32,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:32,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:32,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 121 transitions, 966 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) [2024-11-22 21:47:32,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:32,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:32,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:34,827 INFO L124 PetriNetUnfolderBase]: 22452/29807 cut-off events. [2024-11-22 21:47:34,828 INFO L125 PetriNetUnfolderBase]: For 79000/79197 co-relation queries the response was YES. [2024-11-22 21:47:34,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104930 conditions, 29807 events. 22452/29807 cut-off events. For 79000/79197 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 155306 event pairs, 7957 based on Foata normal form. 73/29733 useless extension candidates. Maximal degree in co-relation 96615. Up to 15603 conditions per place. [2024-11-22 21:47:35,000 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 131 selfloop transitions, 23 changer transitions 10/180 dead transitions. [2024-11-22 21:47:35,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 180 transitions, 1549 flow [2024-11-22 21:47:35,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-22 21:47:35,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-22 21:47:35,002 INFO L175 Difference]: Start difference. First operand has 87 places, 121 transitions, 966 flow. Second operand 5 states and 123 transitions. [2024-11-22 21:47:35,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 180 transitions, 1549 flow [2024-11-22 21:47:36,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 180 transitions, 1491 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:36,112 INFO L231 Difference]: Finished difference. Result has 92 places, 121 transitions, 969 flow [2024-11-22 21:47:36,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=969, PETRI_PLACES=92, PETRI_TRANSITIONS=121} [2024-11-22 21:47:36,113 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-22 21:47:36,113 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 121 transitions, 969 flow [2024-11-22 21:47:36,114 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) [2024-11-22 21:47:36,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:36,114 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:36,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:47:36,114 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)] === [2024-11-22 21:47:36,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:36,115 INFO L85 PathProgramCache]: Analyzing trace with hash 598094857, now seen corresponding path program 3 times [2024-11-22 21:47:36,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:36,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56706353] [2024-11-22 21:47:36,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:36,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:36,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:47:36,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:36,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:36,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56706353] [2024-11-22 21:47:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56706353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:36,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:47:36,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322713216] [2024-11-22 21:47:36,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:36,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:47:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:47:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:47:36,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:36,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 121 transitions, 969 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:36,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:36,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:36,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:38,242 INFO L124 PetriNetUnfolderBase]: 25027/32642 cut-off events. [2024-11-22 21:47:38,243 INFO L125 PetriNetUnfolderBase]: For 78231/78231 co-relation queries the response was YES. [2024-11-22 21:47:38,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112908 conditions, 32642 events. 25027/32642 cut-off events. For 78231/78231 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 161504 event pairs, 8021 based on Foata normal form. 408/33050 useless extension candidates. Maximal degree in co-relation 102911. Up to 19282 conditions per place. [2024-11-22 21:47:38,485 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 157 selfloop transitions, 38 changer transitions 0/196 dead transitions. [2024-11-22 21:47:38,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 196 transitions, 1631 flow [2024-11-22 21:47:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:47:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:47:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-11-22 21:47:38,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-11-22 21:47:38,487 INFO L175 Difference]: Start difference. First operand has 92 places, 121 transitions, 969 flow. Second operand 6 states and 151 transitions. [2024-11-22 21:47:38,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 196 transitions, 1631 flow [2024-11-22 21:47:39,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 196 transitions, 1554 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-22 21:47:39,361 INFO L231 Difference]: Finished difference. Result has 92 places, 124 transitions, 1025 flow [2024-11-22 21:47:39,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1025, PETRI_PLACES=92, PETRI_TRANSITIONS=124} [2024-11-22 21:47:39,362 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-11-22 21:47:39,362 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 124 transitions, 1025 flow [2024-11-22 21:47:39,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:39,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:39,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:39,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:47:39,362 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)] === [2024-11-22 21:47:39,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:39,363 INFO L85 PathProgramCache]: Analyzing trace with hash 407103321, now seen corresponding path program 4 times [2024-11-22 21:47:39,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:39,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978602592] [2024-11-22 21:47:39,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:39,369 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:39,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:39,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:39,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978602592] [2024-11-22 21:47:39,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978602592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:39,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:39,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:39,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480291629] [2024-11-22 21:47:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:39,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:39,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:39,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:39,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:39,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:39,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 124 transitions, 1025 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) [2024-11-22 21:47:39,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:39,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:39,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:41,628 INFO L124 PetriNetUnfolderBase]: 27435/35842 cut-off events. [2024-11-22 21:47:41,628 INFO L125 PetriNetUnfolderBase]: For 80778/80778 co-relation queries the response was YES. [2024-11-22 21:47:41,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124217 conditions, 35842 events. 27435/35842 cut-off events. For 80778/80778 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 179194 event pairs, 5588 based on Foata normal form. 126/35968 useless extension candidates. Maximal degree in co-relation 117355. Up to 19421 conditions per place. [2024-11-22 21:47:41,873 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 162 selfloop transitions, 29 changer transitions 1/193 dead transitions. [2024-11-22 21:47:41,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 193 transitions, 1723 flow [2024-11-22 21:47:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-11-22 21:47:41,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-11-22 21:47:41,874 INFO L175 Difference]: Start difference. First operand has 92 places, 124 transitions, 1025 flow. Second operand 5 states and 124 transitions. [2024-11-22 21:47:41,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 193 transitions, 1723 flow [2024-11-22 21:47:42,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 193 transitions, 1661 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 21:47:42,940 INFO L231 Difference]: Finished difference. Result has 96 places, 133 transitions, 1175 flow [2024-11-22 21:47:42,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1175, PETRI_PLACES=96, PETRI_TRANSITIONS=133} [2024-11-22 21:47:42,941 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2024-11-22 21:47:42,941 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 133 transitions, 1175 flow [2024-11-22 21:47:42,941 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) [2024-11-22 21:47:42,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:42,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:42,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:47:42,942 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)] === [2024-11-22 21:47:42,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1571817691, now seen corresponding path program 4 times [2024-11-22 21:47:42,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:42,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393227044] [2024-11-22 21:47:42,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:42,953 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:42,953 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:42,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393227044] [2024-11-22 21:47:42,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393227044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:42,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:42,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:42,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878010047] [2024-11-22 21:47:42,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:42,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:42,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:42,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 133 transitions, 1175 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) [2024-11-22 21:47:42,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:42,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:42,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:45,516 INFO L124 PetriNetUnfolderBase]: 30559/39866 cut-off events. [2024-11-22 21:47:45,516 INFO L125 PetriNetUnfolderBase]: For 101826/101826 co-relation queries the response was YES. [2024-11-22 21:47:45,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140732 conditions, 39866 events. 30559/39866 cut-off events. For 101826/101826 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 203476 event pairs, 3995 based on Foata normal form. 270/40136 useless extension candidates. Maximal degree in co-relation 133651. Up to 10652 conditions per place. [2024-11-22 21:47:45,819 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 176 selfloop transitions, 59 changer transitions 0/236 dead transitions. [2024-11-22 21:47:45,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 236 transitions, 2038 flow [2024-11-22 21:47:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:47:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:47:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-11-22 21:47:45,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5850340136054422 [2024-11-22 21:47:45,821 INFO L175 Difference]: Start difference. First operand has 96 places, 133 transitions, 1175 flow. Second operand 7 states and 172 transitions. [2024-11-22 21:47:45,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 236 transitions, 2038 flow [2024-11-22 21:47:47,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 236 transitions, 2004 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:47,153 INFO L231 Difference]: Finished difference. Result has 106 places, 146 transitions, 1480 flow [2024-11-22 21:47:47,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1480, PETRI_PLACES=106, PETRI_TRANSITIONS=146} [2024-11-22 21:47:47,153 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 60 predicate places. [2024-11-22 21:47:47,153 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 146 transitions, 1480 flow [2024-11-22 21:47:47,153 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) [2024-11-22 21:47:47,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:47,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:47,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:47:47,154 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)] === [2024-11-22 21:47:47,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash 357410663, now seen corresponding path program 5 times [2024-11-22 21:47:47,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:47,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709225116] [2024-11-22 21:47:47,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:47,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:47,173 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:47,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:47,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:47,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709225116] [2024-11-22 21:47:47,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709225116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:47,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:47,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:47,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971349625] [2024-11-22 21:47:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:47,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:47,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:47,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:47,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:47,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 146 transitions, 1480 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) [2024-11-22 21:47:47,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:47,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:47,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:49,819 INFO L124 PetriNetUnfolderBase]: 27211/35856 cut-off events. [2024-11-22 21:47:49,820 INFO L125 PetriNetUnfolderBase]: For 134474/134718 co-relation queries the response was YES. [2024-11-22 21:47:49,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136119 conditions, 35856 events. 27211/35856 cut-off events. For 134474/134718 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 189129 event pairs, 8929 based on Foata normal form. 123/35850 useless extension candidates. Maximal degree in co-relation 130826. Up to 21644 conditions per place. [2024-11-22 21:47:50,116 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 138 selfloop transitions, 29 changer transitions 11/199 dead transitions. [2024-11-22 21:47:50,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 199 transitions, 2042 flow [2024-11-22 21:47:50,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:50,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-11-22 21:47:50,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-11-22 21:47:50,117 INFO L175 Difference]: Start difference. First operand has 106 places, 146 transitions, 1480 flow. Second operand 5 states and 124 transitions. [2024-11-22 21:47:50,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 199 transitions, 2042 flow [2024-11-22 21:47:51,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 199 transitions, 2024 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:51,998 INFO L231 Difference]: Finished difference. Result has 111 places, 147 transitions, 1546 flow [2024-11-22 21:47:51,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1546, PETRI_PLACES=111, PETRI_TRANSITIONS=147} [2024-11-22 21:47:51,999 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 65 predicate places. [2024-11-22 21:47:51,999 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 147 transitions, 1546 flow [2024-11-22 21:47:51,999 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) [2024-11-22 21:47:51,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:51,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:51,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:47:52,000 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)] === [2024-11-22 21:47:52,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash -278121445, now seen corresponding path program 6 times [2024-11-22 21:47:52,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:52,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158228384] [2024-11-22 21:47:52,000 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:47:52,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:52,007 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:47:52,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:52,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:52,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158228384] [2024-11-22 21:47:52,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158228384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:52,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930938630] [2024-11-22 21:47:52,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:47:52,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:52,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:52,065 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) [2024-11-22 21:47:52,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:47:52,115 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:47:52,116 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:52,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:47:52,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:52,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:52,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930938630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:52,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:52,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-22 21:47:52,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620258407] [2024-11-22 21:47:52,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:52,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:47:52,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:47:52,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:47:52,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:52,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 147 transitions, 1546 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 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) [2024-11-22 21:47:52,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:52,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:52,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:55,331 INFO L124 PetriNetUnfolderBase]: 32199/41900 cut-off events. [2024-11-22 21:47:55,331 INFO L125 PetriNetUnfolderBase]: For 153319/153319 co-relation queries the response was YES. [2024-11-22 21:47:55,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160538 conditions, 41900 events. 32199/41900 cut-off events. For 153319/153319 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 213815 event pairs, 2322 based on Foata normal form. 408/42308 useless extension candidates. Maximal degree in co-relation 150914. Up to 8273 conditions per place. [2024-11-22 21:47:55,625 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 283 selfloop transitions, 87 changer transitions 2/373 dead transitions. [2024-11-22 21:47:55,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 373 transitions, 3113 flow [2024-11-22 21:47:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:47:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 21:47:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 371 transitions. [2024-11-22 21:47:55,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-11-22 21:47:55,627 INFO L175 Difference]: Start difference. First operand has 111 places, 147 transitions, 1546 flow. Second operand 15 states and 371 transitions. [2024-11-22 21:47:55,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 373 transitions, 3113 flow [2024-11-22 21:47:58,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 373 transitions, 3050 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:58,346 INFO L231 Difference]: Finished difference. Result has 125 places, 158 transitions, 1813 flow [2024-11-22 21:47:58,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1813, PETRI_PLACES=125, PETRI_TRANSITIONS=158} [2024-11-22 21:47:58,348 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 79 predicate places. [2024-11-22 21:47:58,348 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 158 transitions, 1813 flow [2024-11-22 21:47:58,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 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) [2024-11-22 21:47:58,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:58,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:58,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:47:58,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:58,549 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)] === [2024-11-22 21:47:58,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2071343447, now seen corresponding path program 5 times [2024-11-22 21:47:58,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:58,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076271618] [2024-11-22 21:47:58,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:58,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:58,556 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:58,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:58,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:58,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076271618] [2024-11-22 21:47:58,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076271618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:58,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:58,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:58,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193867029] [2024-11-22 21:47:58,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:58,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:58,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:58,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:58,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:58,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:58,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 158 transitions, 1813 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) [2024-11-22 21:47:58,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:58,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:58,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:48:01,237 INFO L124 PetriNetUnfolderBase]: 28415/37568 cut-off events. [2024-11-22 21:48:01,237 INFO L125 PetriNetUnfolderBase]: For 194863/195554 co-relation queries the response was YES. [2024-11-22 21:48:01,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150518 conditions, 37568 events. 28415/37568 cut-off events. For 194863/195554 co-relation queries the response was YES. Maximal size of possible extension queue 1489. Compared 200873 event pairs, 11032 based on Foata normal form. 350/37710 useless extension candidates. Maximal degree in co-relation 141527. Up to 21807 conditions per place. [2024-11-22 21:48:01,548 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 159 selfloop transitions, 30 changer transitions 1/216 dead transitions. [2024-11-22 21:48:01,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 216 transitions, 2426 flow [2024-11-22 21:48:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:48:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:48:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-22 21:48:01,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-11-22 21:48:01,550 INFO L175 Difference]: Start difference. First operand has 125 places, 158 transitions, 1813 flow. Second operand 5 states and 128 transitions. [2024-11-22 21:48:01,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 216 transitions, 2426 flow [2024-11-22 21:48:03,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 216 transitions, 2304 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-11-22 21:48:03,247 INFO L231 Difference]: Finished difference. Result has 122 places, 161 transitions, 1815 flow [2024-11-22 21:48:03,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1815, PETRI_PLACES=122, PETRI_TRANSITIONS=161} [2024-11-22 21:48:03,248 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2024-11-22 21:48:03,248 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 161 transitions, 1815 flow [2024-11-22 21:48:03,248 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) [2024-11-22 21:48:03,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:48:03,249 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:48:03,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:48:03,249 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)] === [2024-11-22 21:48:03,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:48:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash 468093033, now seen corresponding path program 6 times [2024-11-22 21:48:03,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:48:03,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516174092] [2024-11-22 21:48:03,250 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:48:03,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:48:03,257 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:48:03,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:03,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:48:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516174092] [2024-11-22 21:48:03,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516174092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:48:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631960131] [2024-11-22 21:48:03,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:48:03,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:48:03,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:48:03,300 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) [2024-11-22 21:48:03,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:48:03,346 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:48:03,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:03,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:48:03,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:48:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:03,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:48:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:03,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631960131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:48:03,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:48:03,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-22 21:48:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292325087] [2024-11-22 21:48:03,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:48:03,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:48:03,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:48:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:48:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:48:03,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:48:03,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 161 transitions, 1815 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2024-11-22 21:48:03,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:48:03,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:48:03,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:48:06,162 INFO L124 PetriNetUnfolderBase]: 30849/40044 cut-off events. [2024-11-22 21:48:06,162 INFO L125 PetriNetUnfolderBase]: For 177992/177992 co-relation queries the response was YES. [2024-11-22 21:48:06,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156890 conditions, 40044 events. 30849/40044 cut-off events. For 177992/177992 co-relation queries the response was YES. Maximal size of possible extension queue 1310. Compared 200519 event pairs, 6960 based on Foata normal form. 270/40314 useless extension candidates. Maximal degree in co-relation 149814. Up to 13363 conditions per place. [2024-11-22 21:48:06,425 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 197 selfloop transitions, 56 changer transitions 1/255 dead transitions. [2024-11-22 21:48:06,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 255 transitions, 2575 flow [2024-11-22 21:48:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:48:06,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:48:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-11-22 21:48:06,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5863095238095238 [2024-11-22 21:48:06,427 INFO L175 Difference]: Start difference. First operand has 122 places, 161 transitions, 1815 flow. Second operand 8 states and 197 transitions. [2024-11-22 21:48:06,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 255 transitions, 2575 flow [2024-11-22 21:48:08,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 255 transitions, 2571 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 21:48:08,404 INFO L231 Difference]: Finished difference. Result has 127 places, 157 transitions, 1842 flow [2024-11-22 21:48:08,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1753, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1842, PETRI_PLACES=127, PETRI_TRANSITIONS=157} [2024-11-22 21:48:08,405 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 81 predicate places. [2024-11-22 21:48:08,405 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 157 transitions, 1842 flow [2024-11-22 21:48:08,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 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) [2024-11-22 21:48:08,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:48:08,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:48:08,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:48:08,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:48:08,606 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)] === [2024-11-22 21:48:08,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:48:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash -193215038, now seen corresponding path program 1 times [2024-11-22 21:48:08,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:48:08,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7031995] [2024-11-22 21:48:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:48:08,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:48:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:48:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:08,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:48:08,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7031995] [2024-11-22 21:48:08,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7031995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:48:08,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127150856] [2024-11-22 21:48:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:48:08,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:48:08,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:48:08,703 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) [2024-11-22 21:48:08,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:48:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:48:08,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 21:48:08,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:48:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:08,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:48:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:48:08,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127150856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:48:08,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:48:08,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-22 21:48:08,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986759789] [2024-11-22 21:48:08,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:48:08,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:48:08,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:48:08,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:48:08,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:48:08,869 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:48:08,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 157 transitions, 1842 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) [2024-11-22 21:48:08,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:48:08,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:48:08,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand