./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3-extended.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 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:49:33,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:49:33,554 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:49:33,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:49:33,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:49:33,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:49:33,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:49:33,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:49:33,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:49:33,594 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:49:33,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:49:33,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:49:33,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:49:33,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:49:33,599 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:49:33,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:49:33,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:49:33,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:49:33,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:49:33,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:49:33,601 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:49:33,601 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:49:33,602 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:49:33,602 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:49:33,602 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:49:33,602 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:49:33,602 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:49:33,603 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:49:33,603 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:49:33,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:49:33,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:49:33,604 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:49:33,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:49:33,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:49:33,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:49:33,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:49:33,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:49:33,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:49:33,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:49:33,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:49:33,621 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:49:33,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:49:33,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cea87724a542982ff884c708bfc22195aa1904db80300e5b965108c3d86cb2f [2024-11-09 10:49:33,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:49:33,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:49:33,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:49:33,912 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:49:33,913 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:49:33,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-09 10:49:35,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:49:35,468 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:49:35,469 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-11-09 10:49:35,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68de19e7/a03909a9c97e4b989ae1aab69b5172a1/FLAG7c2cbee31 [2024-11-09 10:49:35,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e68de19e7/a03909a9c97e4b989ae1aab69b5172a1 [2024-11-09 10:49:35,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:49:35,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:49:35,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:49:35,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:49:35,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:49:35,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:49:35" (1/1) ... [2024-11-09 10:49:35,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76fead55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:35, skipping insertion in model container [2024-11-09 10:49:35,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:49:35" (1/1) ... [2024-11-09 10:49:35,894 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:49:36,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:49:36,140 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:49:36,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:49:36,178 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:49:36,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36 WrapperNode [2024-11-09 10:49:36,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:49:36,180 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:49:36,180 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:49:36,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:49:36,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,214 INFO L138 Inliner]: procedures = 19, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2024-11-09 10:49:36,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:49:36,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:49:36,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:49:36,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:49:36,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,242 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]. [2024-11-09 10:49:36,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,261 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,264 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:49:36,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:49:36,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:49:36,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:49:36,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (1/1) ... [2024-11-09 10:49:36,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:49:36,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:36,302 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) [2024-11-09 10:49:36,308 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 [2024-11-09 10:49:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:49:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:49:36,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:49:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:49:36,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:49:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 10:49:36,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 10:49:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:49:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:49:36,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:49:36,356 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:49:36,463 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:49:36,466 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:49:36,690 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:49:36,690 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:49:36,845 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:49:36,849 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 10:49:36,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:49:36 BoogieIcfgContainer [2024-11-09 10:49:36,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:49:36,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:49:36,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:49:36,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:49:36,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:49:35" (1/3) ... [2024-11-09 10:49:36,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163196c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:49:36, skipping insertion in model container [2024-11-09 10:49:36,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:49:36" (2/3) ... [2024-11-09 10:49:36,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163196c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:49:36, skipping insertion in model container [2024-11-09 10:49:36,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:49:36" (3/3) ... [2024-11-09 10:49:36,860 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-11-09 10:49:36,876 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:49:36,876 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:49:36,876 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:49:36,933 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 10:49:36,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 109 flow [2024-11-09 10:49:36,997 INFO L124 PetriNetUnfolderBase]: 6/41 cut-off events. [2024-11-09 10:49:36,998 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 10:49:37,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 6/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-09 10:49:37,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 109 flow [2024-11-09 10:49:37,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 40 transitions, 98 flow [2024-11-09 10:49:37,012 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:49:37,018 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;@4a907af5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:49:37,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 10:49:37,030 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:49:37,031 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2024-11-09 10:49:37,031 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 10:49:37,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:37,032 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:37,032 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:37,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:37,038 INFO L85 PathProgramCache]: Analyzing trace with hash 999327287, now seen corresponding path program 1 times [2024-11-09 10:49:37,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:37,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49910544] [2024-11-09 10:49:37,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:37,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49910544] [2024-11-09 10:49:37,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49910544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:49:37,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:49:37,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:49:37,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636751361] [2024-11-09 10:49:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:49:37,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:49:37,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:49:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:49:37,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-09 10:49:37,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-11-09 10:49:37,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:37,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-09 10:49:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:37,715 INFO L124 PetriNetUnfolderBase]: 996/1607 cut-off events. [2024-11-09 10:49:37,715 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-09 10:49:37,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2944 conditions, 1607 events. 996/1607 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8071 event pairs, 94 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 2669. Up to 1177 conditions per place. [2024-11-09 10:49:37,740 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 32 selfloop transitions, 7 changer transitions 1/55 dead transitions. [2024-11-09 10:49:37,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 223 flow [2024-11-09 10:49:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:49:37,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:49:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-09 10:49:37,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-09 10:49:37,755 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 98 flow. Second operand 3 states and 99 transitions. [2024-11-09 10:49:37,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 223 flow [2024-11-09 10:49:37,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 55 transitions, 201 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 10:49:37,766 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 129 flow [2024-11-09 10:49:37,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2024-11-09 10:49:37,773 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-09 10:49:37,773 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 129 flow [2024-11-09 10:49:37,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-11-09 10:49:37,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:37,775 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] [2024-11-09 10:49:37,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:49:37,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:37,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash 177376951, now seen corresponding path program 1 times [2024-11-09 10:49:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802017142] [2024-11-09 10:49:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:37,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:49:37,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:37,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802017142] [2024-11-09 10:49:37,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802017142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:49:37,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:49:37,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:49:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069405087] [2024-11-09 10:49:37,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:49:37,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:49:37,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:49:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:49:37,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 44 [2024-11-09 10:49:37,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-09 10:49:37,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:37,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 44 [2024-11-09 10:49:37,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:38,207 INFO L124 PetriNetUnfolderBase]: 891/1473 cut-off events. [2024-11-09 10:49:38,207 INFO L125 PetriNetUnfolderBase]: For 226/310 co-relation queries the response was YES. [2024-11-09 10:49:38,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1473 events. 891/1473 cut-off events. For 226/310 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7896 event pairs, 153 based on Foata normal form. 47/1331 useless extension candidates. Maximal degree in co-relation 1791. Up to 595 conditions per place. [2024-11-09 10:49:38,249 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 31 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-11-09 10:49:38,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 225 flow [2024-11-09 10:49:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:49:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:49:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-09 10:49:38,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7651515151515151 [2024-11-09 10:49:38,259 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 129 flow. Second operand 3 states and 101 transitions. [2024-11-09 10:49:38,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 225 flow [2024-11-09 10:49:38,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 10:49:38,261 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 132 flow [2024-11-09 10:49:38,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2024-11-09 10:49:38,262 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2024-11-09 10:49:38,266 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 132 flow [2024-11-09 10:49:38,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-09 10:49:38,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:38,267 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] [2024-11-09 10:49:38,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:49:38,267 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:38,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:38,268 INFO L85 PathProgramCache]: Analyzing trace with hash 722337814, now seen corresponding path program 1 times [2024-11-09 10:49:38,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:38,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631349576] [2024-11-09 10:49:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:38,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631349576] [2024-11-09 10:49:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631349576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:49:38,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:49:38,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:49:38,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695424424] [2024-11-09 10:49:38,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:49:38,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:49:38,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:38,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:49:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:49:38,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 44 [2024-11-09 10:49:38,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-09 10:49:38,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:38,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 44 [2024-11-09 10:49:38,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:38,580 INFO L124 PetriNetUnfolderBase]: 930/1659 cut-off events. [2024-11-09 10:49:38,580 INFO L125 PetriNetUnfolderBase]: For 345/369 co-relation queries the response was YES. [2024-11-09 10:49:38,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3373 conditions, 1659 events. 930/1659 cut-off events. For 345/369 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9826 event pairs, 148 based on Foata normal form. 57/1462 useless extension candidates. Maximal degree in co-relation 1763. Up to 652 conditions per place. [2024-11-09 10:49:38,598 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 32 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-09 10:49:38,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 237 flow [2024-11-09 10:49:38,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:49:38,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:49:38,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-09 10:49:38,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7575757575757576 [2024-11-09 10:49:38,602 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 132 flow. Second operand 3 states and 100 transitions. [2024-11-09 10:49:38,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 237 flow [2024-11-09 10:49:38,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:49:38,605 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 142 flow [2024-11-09 10:49:38,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2024-11-09 10:49:38,606 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2024-11-09 10:49:38,607 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 142 flow [2024-11-09 10:49:38,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-09 10:49:38,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:38,608 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] [2024-11-09 10:49:38,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:49:38,609 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:38,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1121565962, now seen corresponding path program 1 times [2024-11-09 10:49:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788738495] [2024-11-09 10:49:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:38,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:38,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788738495] [2024-11-09 10:49:38,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788738495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:49:38,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:49:38,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:49:38,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093617817] [2024-11-09 10:49:38,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:49:38,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:49:38,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:38,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:49:38,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:49:38,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 44 [2024-11-09 10:49:38,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-09 10:49:38,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:38,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 44 [2024-11-09 10:49:38,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:38,933 INFO L124 PetriNetUnfolderBase]: 1143/1951 cut-off events. [2024-11-09 10:49:38,934 INFO L125 PetriNetUnfolderBase]: For 766/820 co-relation queries the response was YES. [2024-11-09 10:49:38,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 1951 events. 1143/1951 cut-off events. For 766/820 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11343 event pairs, 264 based on Foata normal form. 72/1635 useless extension candidates. Maximal degree in co-relation 1633. Up to 683 conditions per place. [2024-11-09 10:49:38,953 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 33 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-09 10:49:38,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 255 flow [2024-11-09 10:49:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:49:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:49:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-09 10:49:38,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-09 10:49:38,957 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 142 flow. Second operand 3 states and 99 transitions. [2024-11-09 10:49:38,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 255 flow [2024-11-09 10:49:38,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:49:38,960 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 152 flow [2024-11-09 10:49:38,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2024-11-09 10:49:38,962 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-09 10:49:38,962 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 152 flow [2024-11-09 10:49:38,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2024-11-09 10:49:38,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:38,963 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, 1, 1] [2024-11-09 10:49:38,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:49:38,964 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:38,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:38,964 INFO L85 PathProgramCache]: Analyzing trace with hash 283793696, now seen corresponding path program 1 times [2024-11-09 10:49:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:38,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606155959] [2024-11-09 10:49:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:39,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:39,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606155959] [2024-11-09 10:49:39,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606155959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:49:39,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:49:39,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:49:39,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899863484] [2024-11-09 10:49:39,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:49:39,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:49:39,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:49:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:49:39,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 44 [2024-11-09 10:49:39,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-09 10:49:39,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:39,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 44 [2024-11-09 10:49:39,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:39,306 INFO L124 PetriNetUnfolderBase]: 1305/2128 cut-off events. [2024-11-09 10:49:39,307 INFO L125 PetriNetUnfolderBase]: For 1070/1124 co-relation queries the response was YES. [2024-11-09 10:49:39,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 2128 events. 1305/2128 cut-off events. For 1070/1124 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12048 event pairs, 285 based on Foata normal form. 40/1846 useless extension candidates. Maximal degree in co-relation 1892. Up to 918 conditions per place. [2024-11-09 10:49:39,325 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 34 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-09 10:49:39,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 260 flow [2024-11-09 10:49:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:49:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:49:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-09 10:49:39,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2024-11-09 10:49:39,327 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 152 flow. Second operand 3 states and 97 transitions. [2024-11-09 10:49:39,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 260 flow [2024-11-09 10:49:39,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:49:39,331 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 154 flow [2024-11-09 10:49:39,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-11-09 10:49:39,332 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-11-09 10:49:39,332 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 154 flow [2024-11-09 10:49:39,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-09 10:49:39,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:39,333 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, 1, 1] [2024-11-09 10:49:39,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:49:39,334 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:39,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1947653926, now seen corresponding path program 1 times [2024-11-09 10:49:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:39,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885083917] [2024-11-09 10:49:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:49:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885083917] [2024-11-09 10:49:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885083917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:49:39,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:49:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:49:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614428867] [2024-11-09 10:49:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:49:39,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:49:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:49:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:49:39,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-09 10:49:39,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:39,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:39,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-09 10:49:39,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:39,895 INFO L124 PetriNetUnfolderBase]: 1995/3193 cut-off events. [2024-11-09 10:49:39,895 INFO L125 PetriNetUnfolderBase]: For 1751/2025 co-relation queries the response was YES. [2024-11-09 10:49:39,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 3193 events. 1995/3193 cut-off events. For 1751/2025 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17410 event pairs, 516 based on Foata normal form. 101/2857 useless extension candidates. Maximal degree in co-relation 3124. Up to 1040 conditions per place. [2024-11-09 10:49:39,920 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 49 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2024-11-09 10:49:39,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 358 flow [2024-11-09 10:49:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:49:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:49:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-09 10:49:39,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-09 10:49:39,922 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 154 flow. Second operand 4 states and 132 transitions. [2024-11-09 10:49:39,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 358 flow [2024-11-09 10:49:39,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:49:39,925 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 182 flow [2024-11-09 10:49:39,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-11-09 10:49:39,926 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2024-11-09 10:49:39,926 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 182 flow [2024-11-09 10:49:39,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:39,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:39,926 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1] [2024-11-09 10:49:39,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:49:39,927 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:39,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1241066302, now seen corresponding path program 1 times [2024-11-09 10:49:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:39,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258556922] [2024-11-09 10:49:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:39,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:40,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:40,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258556922] [2024-11-09 10:49:40,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258556922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:49:40,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:49:40,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:49:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692887569] [2024-11-09 10:49:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:49:40,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:49:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:40,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:49:40,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:49:40,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-09 10:49:40,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2024-11-09 10:49:40,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:40,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-09 10:49:40,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:40,709 INFO L124 PetriNetUnfolderBase]: 3325/5357 cut-off events. [2024-11-09 10:49:40,709 INFO L125 PetriNetUnfolderBase]: For 4827/5066 co-relation queries the response was YES. [2024-11-09 10:49:40,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14365 conditions, 5357 events. 3325/5357 cut-off events. For 4827/5066 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 34622 event pairs, 890 based on Foata normal form. 212/4975 useless extension candidates. Maximal degree in co-relation 7542. Up to 1618 conditions per place. [2024-11-09 10:49:40,746 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 55 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2024-11-09 10:49:40,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 80 transitions, 444 flow [2024-11-09 10:49:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:49:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:49:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-09 10:49:40,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-09 10:49:40,748 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 182 flow. Second operand 4 states and 132 transitions. [2024-11-09 10:49:40,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 80 transitions, 444 flow [2024-11-09 10:49:40,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 438 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 10:49:40,751 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 212 flow [2024-11-09 10:49:40,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-11-09 10:49:40,752 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-11-09 10:49:40,752 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 212 flow [2024-11-09 10:49:40,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2024-11-09 10:49:40,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:40,753 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1] [2024-11-09 10:49:40,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:49:40,753 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:40,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash -279775882, now seen corresponding path program 1 times [2024-11-09 10:49:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396177304] [2024-11-09 10:49:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 10:49:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:40,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396177304] [2024-11-09 10:49:40,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396177304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:49:40,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:49:40,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:49:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302217567] [2024-11-09 10:49:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:49:40,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:49:40,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:49:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:49:40,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-11-09 10:49:40,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2024-11-09 10:49:40,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:40,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-11-09 10:49:40,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:41,914 INFO L124 PetriNetUnfolderBase]: 5662/8775 cut-off events. [2024-11-09 10:49:41,914 INFO L125 PetriNetUnfolderBase]: For 15019/15901 co-relation queries the response was YES. [2024-11-09 10:49:41,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26826 conditions, 8775 events. 5662/8775 cut-off events. For 15019/15901 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 57979 event pairs, 1741 based on Foata normal form. 410/8002 useless extension candidates. Maximal degree in co-relation 15466. Up to 2671 conditions per place. [2024-11-09 10:49:41,990 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 59 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-11-09 10:49:41,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 524 flow [2024-11-09 10:49:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:49:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:49:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-11-09 10:49:41,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7329545454545454 [2024-11-09 10:49:41,992 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 212 flow. Second operand 4 states and 129 transitions. [2024-11-09 10:49:41,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 524 flow [2024-11-09 10:49:41,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 518 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 10:49:41,999 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 240 flow [2024-11-09 10:49:42,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-09 10:49:42,002 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2024-11-09 10:49:42,002 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 240 flow [2024-11-09 10:49:42,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 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) [2024-11-09 10:49:42,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:42,003 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-09 10:49:42,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:49:42,004 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:42,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash 350865356, now seen corresponding path program 1 times [2024-11-09 10:49:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:42,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965677107] [2024-11-09 10:49:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:42,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:42,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965677107] [2024-11-09 10:49:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965677107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:42,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707957240] [2024-11-09 10:49:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:42,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:42,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:42,322 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) [2024-11-09 10:49:42,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:49:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:42,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 10:49:42,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:42,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707957240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:42,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-09 10:49:42,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971243455] [2024-11-09 10:49:42,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:42,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:49:42,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:49:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:49:42,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-09 10:49:42,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-11-09 10:49:42,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:42,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-09 10:49:42,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:44,856 INFO L124 PetriNetUnfolderBase]: 13709/22568 cut-off events. [2024-11-09 10:49:44,857 INFO L125 PetriNetUnfolderBase]: For 31351/33198 co-relation queries the response was YES. [2024-11-09 10:49:44,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69472 conditions, 22568 events. 13709/22568 cut-off events. For 31351/33198 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 162133 event pairs, 2553 based on Foata normal form. 878/23142 useless extension candidates. Maximal degree in co-relation 17508. Up to 8575 conditions per place. [2024-11-09 10:49:45,057 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 99 selfloop transitions, 22 changer transitions 1/140 dead transitions. [2024-11-09 10:49:45,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 140 transitions, 907 flow [2024-11-09 10:49:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:49:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:49:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-11-09 10:49:45,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8227272727272728 [2024-11-09 10:49:45,059 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 240 flow. Second operand 5 states and 181 transitions. [2024-11-09 10:49:45,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 140 transitions, 907 flow [2024-11-09 10:49:45,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 140 transitions, 899 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-09 10:49:45,070 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 381 flow [2024-11-09 10:49:45,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2024-11-09 10:49:45,072 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-09 10:49:45,072 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 381 flow [2024-11-09 10:49:45,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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) [2024-11-09 10:49:45,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:45,073 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-09 10:49:45,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:49:45,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:45,275 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:45,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1625520622, now seen corresponding path program 2 times [2024-11-09 10:49:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373435110] [2024-11-09 10:49:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:45,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:45,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:45,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373435110] [2024-11-09 10:49:45,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373435110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:45,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027913896] [2024-11-09 10:49:45,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:49:45,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:45,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:45,535 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) [2024-11-09 10:49:45,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:49:45,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:49:45,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:45,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 10:49:45,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:45,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:45,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027913896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:45,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:45,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-09 10:49:45,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087521823] [2024-11-09 10:49:45,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:45,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:49:45,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:45,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:49:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:49:45,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-09 10:49:45,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-09 10:49:45,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:45,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-09 10:49:45,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:50,062 INFO L124 PetriNetUnfolderBase]: 25739/42371 cut-off events. [2024-11-09 10:49:50,062 INFO L125 PetriNetUnfolderBase]: For 78109/81779 co-relation queries the response was YES. [2024-11-09 10:49:50,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145318 conditions, 42371 events. 25739/42371 cut-off events. For 78109/81779 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 339182 event pairs, 3091 based on Foata normal form. 1763/43603 useless extension candidates. Maximal degree in co-relation 36533. Up to 14115 conditions per place. [2024-11-09 10:49:50,441 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 123 selfloop transitions, 46 changer transitions 1/188 dead transitions. [2024-11-09 10:49:50,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 188 transitions, 1337 flow [2024-11-09 10:49:50,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:49:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:49:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-11-09 10:49:50,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8371212121212122 [2024-11-09 10:49:50,443 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 381 flow. Second operand 6 states and 221 transitions. [2024-11-09 10:49:50,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 188 transitions, 1337 flow [2024-11-09 10:49:50,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 188 transitions, 1253 flow, removed 42 selfloop flow, removed 0 redundant places. [2024-11-09 10:49:50,492 INFO L231 Difference]: Finished difference. Result has 70 places, 95 transitions, 569 flow [2024-11-09 10:49:50,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=569, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2024-11-09 10:49:50,493 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-11-09 10:49:50,495 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 569 flow [2024-11-09 10:49:50,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-09 10:49:50,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:50,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-09 10:49:50,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:49:50,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 10:49:50,696 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:50,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2073540682, now seen corresponding path program 3 times [2024-11-09 10:49:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:50,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102782688] [2024-11-09 10:49:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:50,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:49:50,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:50,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102782688] [2024-11-09 10:49:50,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102782688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:50,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208684387] [2024-11-09 10:49:50,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:49:50,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:50,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:50,883 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) [2024-11-09 10:49:50,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:49:50,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 10:49:50,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:50,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 10:49:50,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:49:51,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:49:51,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208684387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:51,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:51,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-09 10:49:51,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172633926] [2024-11-09 10:49:51,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:51,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:49:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:49:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:49:51,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-09 10:49:51,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 569 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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) [2024-11-09 10:49:51,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:51,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-09 10:49:51,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:57,598 INFO L124 PetriNetUnfolderBase]: 41804/69035 cut-off events. [2024-11-09 10:49:57,598 INFO L125 PetriNetUnfolderBase]: For 135016/140828 co-relation queries the response was YES. [2024-11-09 10:49:58,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239811 conditions, 69035 events. 41804/69035 cut-off events. For 135016/140828 co-relation queries the response was YES. Maximal size of possible extension queue 2253. Compared 596579 event pairs, 4351 based on Foata normal form. 2876/70891 useless extension candidates. Maximal degree in co-relation 63685. Up to 20701 conditions per place. [2024-11-09 10:49:58,413 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 146 selfloop transitions, 76 changer transitions 1/241 dead transitions. [2024-11-09 10:49:58,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 241 transitions, 1790 flow [2024-11-09 10:49:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:49:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:49:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-11-09 10:49:58,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8474025974025974 [2024-11-09 10:49:58,415 INFO L175 Difference]: Start difference. First operand has 70 places, 95 transitions, 569 flow. Second operand 7 states and 261 transitions. [2024-11-09 10:49:58,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 241 transitions, 1790 flow [2024-11-09 10:49:58,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 241 transitions, 1683 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-11-09 10:49:58,498 INFO L231 Difference]: Finished difference. Result has 76 places, 125 transitions, 847 flow [2024-11-09 10:49:58,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=847, PETRI_PLACES=76, PETRI_TRANSITIONS=125} [2024-11-09 10:49:58,499 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2024-11-09 10:49:58,500 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 125 transitions, 847 flow [2024-11-09 10:49:58,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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) [2024-11-09 10:49:58,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:58,500 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-09 10:49:58,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:58,704 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 [2024-11-09 10:49:58,705 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:49:58,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2084988548, now seen corresponding path program 4 times [2024-11-09 10:49:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:58,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777769603] [2024-11-09 10:49:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:58,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:58,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:58,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777769603] [2024-11-09 10:49:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777769603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:58,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453384727] [2024-11-09 10:49:58,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:49:58,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:58,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:58,880 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) [2024-11-09 10:49:58,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:49:58,960 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:49:58,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:58,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 10:49:58,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:59,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:49:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453384727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:59,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-09 10:49:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042931038] [2024-11-09 10:49:59,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:59,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:49:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:49:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:49:59,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-09 10:49:59,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 125 transitions, 847 flow. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-09 10:49:59,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:59,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-09 10:49:59,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:50:07,738 INFO L124 PetriNetUnfolderBase]: 53504/87477 cut-off events. [2024-11-09 10:50:07,738 INFO L125 PetriNetUnfolderBase]: For 210359/217535 co-relation queries the response was YES. [2024-11-09 10:50:08,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320452 conditions, 87477 events. 53504/87477 cut-off events. For 210359/217535 co-relation queries the response was YES. Maximal size of possible extension queue 2790. Compared 774516 event pairs, 11037 based on Foata normal form. 3451/89103 useless extension candidates. Maximal degree in co-relation 95372. Up to 58694 conditions per place. [2024-11-09 10:50:08,789 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 185 selfloop transitions, 54 changer transitions 1/258 dead transitions. [2024-11-09 10:50:08,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 258 transitions, 2128 flow [2024-11-09 10:50:08,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:50:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:50:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-11-09 10:50:08,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.821969696969697 [2024-11-09 10:50:08,791 INFO L175 Difference]: Start difference. First operand has 76 places, 125 transitions, 847 flow. Second operand 6 states and 217 transitions. [2024-11-09 10:50:08,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 258 transitions, 2128 flow [2024-11-09 10:50:08,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 258 transitions, 2014 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-11-09 10:50:08,939 INFO L231 Difference]: Finished difference. Result has 83 places, 175 transitions, 1352 flow [2024-11-09 10:50:08,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1352, PETRI_PLACES=83, PETRI_TRANSITIONS=175} [2024-11-09 10:50:08,940 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2024-11-09 10:50:08,940 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 175 transitions, 1352 flow [2024-11-09 10:50:08,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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) [2024-11-09 10:50:08,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:50:08,940 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-09 10:50:08,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 10:50:09,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:50:09,141 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:50:09,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:50:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash 352029374, now seen corresponding path program 5 times [2024-11-09 10:50:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:50:09,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569526978] [2024-11-09 10:50:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:50:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:50:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:50:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:50:09,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:50:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569526978] [2024-11-09 10:50:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569526978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:50:09,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213390953] [2024-11-09 10:50:09,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:50:09,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:50:09,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:50:09,338 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) [2024-11-09 10:50:09,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:50:09,419 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:50:09,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:50:09,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 10:50:09,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:50:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:50:09,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:50:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:50:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213390953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:50:09,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:50:09,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-09 10:50:09,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619323664] [2024-11-09 10:50:09,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:50:09,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:50:09,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:50:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:50:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:50:09,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-09 10:50:09,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 175 transitions, 1352 flow. Second operand has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 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) [2024-11-09 10:50:09,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:50:09,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-09 10:50:09,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:50:22,283 INFO L124 PetriNetUnfolderBase]: 72127/118458 cut-off events. [2024-11-09 10:50:22,283 INFO L125 PetriNetUnfolderBase]: For 293463/303889 co-relation queries the response was YES. [2024-11-09 10:50:23,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433994 conditions, 118458 events. 72127/118458 cut-off events. For 293463/303889 co-relation queries the response was YES. Maximal size of possible extension queue 4200. Compared 1095855 event pairs, 6926 based on Foata normal form. 5036/121526 useless extension candidates. Maximal degree in co-relation 146240. Up to 23338 conditions per place. [2024-11-09 10:50:23,731 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 170 selfloop transitions, 162 changer transitions 1/351 dead transitions. [2024-11-09 10:50:23,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 351 transitions, 2954 flow [2024-11-09 10:50:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:50:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:50:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 301 transitions. [2024-11-09 10:50:23,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8551136363636364 [2024-11-09 10:50:23,732 INFO L175 Difference]: Start difference. First operand has 83 places, 175 transitions, 1352 flow. Second operand 8 states and 301 transitions. [2024-11-09 10:50:23,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 351 transitions, 2954 flow [2024-11-09 10:50:23,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 351 transitions, 2942 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-09 10:50:23,932 INFO L231 Difference]: Finished difference. Result has 91 places, 211 transitions, 1953 flow [2024-11-09 10:50:23,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1953, PETRI_PLACES=91, PETRI_TRANSITIONS=211} [2024-11-09 10:50:23,933 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-11-09 10:50:23,933 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 211 transitions, 1953 flow [2024-11-09 10:50:23,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.25) internal successors, (178), 8 states have internal predecessors, (178), 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) [2024-11-09 10:50:23,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:50:23,934 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-09 10:50:23,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:50:24,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 10:50:24,135 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:50:24,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:50:24,135 INFO L85 PathProgramCache]: Analyzing trace with hash -127643314, now seen corresponding path program 6 times [2024-11-09 10:50:24,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:50:24,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493657758] [2024-11-09 10:50:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:50:24,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:50:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:50:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:50:24,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:50:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493657758] [2024-11-09 10:50:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493657758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:50:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556300525] [2024-11-09 10:50:24,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:50:24,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:50:24,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:50:24,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:50:24,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:50:24,548 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 10:50:24,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:50:24,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 10:50:24,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:50:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:50:24,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:50:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 10:50:25,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556300525] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 10:50:25,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:50:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 9] total 16 [2024-11-09 10:50:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956516306] [2024-11-09 10:50:25,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:50:25,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:50:25,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:50:25,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:50:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:50:25,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-11-09 10:50:25,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 211 transitions, 1953 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:50:25,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:50:25,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-11-09 10:50:25,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand