./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:40:42,421 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:40:42,479 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:40:42,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:40:42,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:40:42,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:40:42,518 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:40:42,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:40:42,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:40:42,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:40:42,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:40:42,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:40:42,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:40:42,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:40:42,522 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:40:42,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:40:42,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:40:42,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:40:42,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:40:42,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:40:42,523 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:40:42,527 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:40:42,527 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:40:42,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:40:42,527 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:40:42,528 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:40:42,528 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:40:42,528 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:40:42,528 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:40:42,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:40:42,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:40:42,528 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:40:42,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:40:42,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:40:42,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:40:42,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:40:42,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:40:42,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:40:42,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:40:42,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:40:42,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:40:42,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:40:42,530 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-10-14 19:40:42,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:40:42,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:40:42,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:40:42,769 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:40:42,770 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:40:42,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-14 19:40:44,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:40:44,390 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:40:44,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-10-14 19:40:44,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12677b5d0/f7c15f3a5520472ea39f7b826ef9a7ef/FLAG2231d9670 [2024-10-14 19:40:44,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12677b5d0/f7c15f3a5520472ea39f7b826ef9a7ef [2024-10-14 19:40:44,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:40:44,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:40:44,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:40:44,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:40:44,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:40:44,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:40:44" (1/1) ... [2024-10-14 19:40:44,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64aaf74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:44, skipping insertion in model container [2024-10-14 19:40:44,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:40:44" (1/1) ... [2024-10-14 19:40:44,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:40:45,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:40:45,184 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:40:45,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:40:45,279 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:40:45,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45 WrapperNode [2024-10-14 19:40:45,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:40:45,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:40:45,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:40:45,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:40:45,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,334 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-10-14 19:40:45,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:40:45,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:40:45,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:40:45,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:40:45,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,369 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-14 19:40:45,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,382 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,384 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:40:45,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:40:45,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:40:45,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:40:45,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (1/1) ... [2024-10-14 19:40:45,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:40:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:40:45,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:40:45,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:40:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 19:40:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 19:40:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:40:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-10-14 19:40:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-10-14 19:40:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:40:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 19:40:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:40:45,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:40:45,463 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:40:45,559 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:40:45,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:40:45,664 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:40:45,664 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:40:45,779 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:40:45,779 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 19:40:45,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:40:45 BoogieIcfgContainer [2024-10-14 19:40:45,780 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:40:45,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:40:45,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:40:45,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:40:45,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:40:44" (1/3) ... [2024-10-14 19:40:45,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4727f391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:40:45, skipping insertion in model container [2024-10-14 19:40:45,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:40:45" (2/3) ... [2024-10-14 19:40:45,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4727f391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:40:45, skipping insertion in model container [2024-10-14 19:40:45,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:40:45" (3/3) ... [2024-10-14 19:40:45,790 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-10-14 19:40:45,803 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:40:45,804 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:40:45,804 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:40:45,824 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 19:40:45,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2024-10-14 19:40:45,877 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-10-14 19:40:45,877 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:40:45,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 4/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-10-14 19:40:45,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2024-10-14 19:40:45,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2024-10-14 19:40:45,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:40:45,895 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;@2f8952fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:40:45,895 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-14 19:40:45,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:40:45,902 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-10-14 19:40:45,902 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:40:45,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:45,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:45,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:45,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash -54454784, now seen corresponding path program 1 times [2024-10-14 19:40:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982297281] [2024-10-14 19:40:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:45,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:40:46,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:46,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982297281] [2024-10-14 19:40:46,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982297281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:40:46,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:40:46,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:40:46,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605819814] [2024-10-14 19:40:46,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:40:46,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:40:46,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:40:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:40:46,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-14 19:40:46,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:46,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:46,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-14 19:40:46,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:46,245 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2024-10-14 19:40:46,245 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:40:46,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 135 events. 61/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 400 event pairs, 27 based on Foata normal form. 9/143 useless extension candidates. Maximal degree in co-relation 247. Up to 78 conditions per place. [2024-10-14 19:40:46,247 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2024-10-14 19:40:46,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2024-10-14 19:40:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:40:46,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:40:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-10-14 19:40:46,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-10-14 19:40:46,258 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-10-14 19:40:46,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2024-10-14 19:40:46,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:40:46,261 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2024-10-14 19:40:46,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2024-10-14 19:40:46,265 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2024-10-14 19:40:46,265 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2024-10-14 19:40:46,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:46,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:46,266 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:46,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:40:46,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:46,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:46,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1209453456, now seen corresponding path program 1 times [2024-10-14 19:40:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:46,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835859927] [2024-10-14 19:40:46,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:46,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:40:46,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:46,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835859927] [2024-10-14 19:40:46,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835859927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:40:46,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:40:46,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:40:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895855983] [2024-10-14 19:40:46,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:40:46,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:40:46,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:40:46,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:40:46,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-14 19:40:46,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:46,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:46,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-14 19:40:46,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:46,408 INFO L124 PetriNetUnfolderBase]: 101/222 cut-off events. [2024-10-14 19:40:46,409 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-10-14 19:40:46,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 222 events. 101/222 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 780 event pairs, 53 based on Foata normal form. 10/231 useless extension candidates. Maximal degree in co-relation 123. Up to 126 conditions per place. [2024-10-14 19:40:46,411 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-14 19:40:46,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 146 flow [2024-10-14 19:40:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:40:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:40:46,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-10-14 19:40:46,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-10-14 19:40:46,413 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 49 transitions. [2024-10-14 19:40:46,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 146 flow [2024-10-14 19:40:46,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:40:46,414 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2024-10-14 19:40:46,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2024-10-14 19:40:46,415 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2024-10-14 19:40:46,415 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2024-10-14 19:40:46,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:46,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:46,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:46,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:40:46,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:46,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2077585499, now seen corresponding path program 1 times [2024-10-14 19:40:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867824139] [2024-10-14 19:40:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:40:46,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:46,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867824139] [2024-10-14 19:40:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867824139] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:40:46,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:40:46,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:40:46,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854674941] [2024-10-14 19:40:46,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:40:46,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:40:46,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:40:46,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:40:46,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-10-14 19:40:46,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:46,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:46,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-10-14 19:40:46,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:46,639 INFO L124 PetriNetUnfolderBase]: 69/171 cut-off events. [2024-10-14 19:40:46,640 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-14 19:40:46,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 171 events. 69/171 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 530 event pairs, 25 based on Foata normal form. 16/186 useless extension candidates. Maximal degree in co-relation 134. Up to 80 conditions per place. [2024-10-14 19:40:46,643 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 23 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-10-14 19:40:46,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 154 flow [2024-10-14 19:40:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:40:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:40:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-10-14 19:40:46,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-10-14 19:40:46,646 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 46 transitions. [2024-10-14 19:40:46,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 154 flow [2024-10-14 19:40:46,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:40:46,649 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2024-10-14 19:40:46,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-10-14 19:40:46,650 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-10-14 19:40:46,651 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2024-10-14 19:40:46,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:46,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:46,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:46,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:40:46,652 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:46,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash -834231567, now seen corresponding path program 2 times [2024-10-14 19:40:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:46,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770223416] [2024-10-14 19:40:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:40:46,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:46,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770223416] [2024-10-14 19:40:46,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770223416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:40:46,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493436278] [2024-10-14 19:40:46,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:40:46,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:46,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:40:46,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:40:46,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:40:46,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:40:46,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:40:46,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:40:46,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:40:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:40:46,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:40:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:40:46,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493436278] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:40:46,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:40:46,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-14 19:40:46,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800285119] [2024-10-14 19:40:46,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:40:46,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:40:46,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:40:46,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:40:46,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:40:46,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 72 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:46,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:46,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:40:46,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:47,094 INFO L124 PetriNetUnfolderBase]: 167/379 cut-off events. [2024-10-14 19:40:47,095 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-10-14 19:40:47,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 379 events. 167/379 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1246 event pairs, 24 based on Foata normal form. 30/409 useless extension candidates. Maximal degree in co-relation 297. Up to 86 conditions per place. [2024-10-14 19:40:47,099 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 57 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2024-10-14 19:40:47,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 66 transitions, 348 flow [2024-10-14 19:40:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:40:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:40:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-10-14 19:40:47,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-10-14 19:40:47,102 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 6 states and 97 transitions. [2024-10-14 19:40:47,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 66 transitions, 348 flow [2024-10-14 19:40:47,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 66 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:40:47,105 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 108 flow [2024-10-14 19:40:47,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-10-14 19:40:47,108 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-10-14 19:40:47,108 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 108 flow [2024-10-14 19:40:47,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:47,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:47,109 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:47,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 19:40:47,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:47,314 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:47,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:47,314 INFO L85 PathProgramCache]: Analyzing trace with hash -36039780, now seen corresponding path program 3 times [2024-10-14 19:40:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:47,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661446731] [2024-10-14 19:40:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:47,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 19:40:47,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:47,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661446731] [2024-10-14 19:40:47,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661446731] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:40:47,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594868242] [2024-10-14 19:40:47,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:40:47,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:40:47,442 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:40:47,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:40:47,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 19:40:47,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:40:47,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:40:47,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:40:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 19:40:47,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:40:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 19:40:47,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594868242] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:40:47,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:40:47,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-14 19:40:47,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787086300] [2024-10-14 19:40:47,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:40:47,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 19:40:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 19:40:47,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-14 19:40:47,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:40:47,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:47,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:47,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:40:47,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:47,770 INFO L124 PetriNetUnfolderBase]: 294/695 cut-off events. [2024-10-14 19:40:47,771 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2024-10-14 19:40:47,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 695 events. 294/695 cut-off events. For 864/864 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2875 event pairs, 51 based on Foata normal form. 57/752 useless extension candidates. Maximal degree in co-relation 1232. Up to 156 conditions per place. [2024-10-14 19:40:47,775 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 67 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-10-14 19:40:47,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 77 transitions, 518 flow [2024-10-14 19:40:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:40:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:40:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-10-14 19:40:47,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-10-14 19:40:47,781 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 108 flow. Second operand 6 states and 97 transitions. [2024-10-14 19:40:47,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 77 transitions, 518 flow [2024-10-14 19:40:47,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 77 transitions, 478 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-10-14 19:40:47,788 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 140 flow [2024-10-14 19:40:47,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2024-10-14 19:40:47,790 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2024-10-14 19:40:47,790 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 140 flow [2024-10-14 19:40:47,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:47,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:47,792 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:47,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 19:40:47,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:47,993 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:47,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:47,993 INFO L85 PathProgramCache]: Analyzing trace with hash 198452272, now seen corresponding path program 4 times [2024-10-14 19:40:47,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:47,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104419501] [2024-10-14 19:40:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:47,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 19:40:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:48,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104419501] [2024-10-14 19:40:48,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104419501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:40:48,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576691966] [2024-10-14 19:40:48,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:40:48,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:48,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:40:48,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:40:48,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:40:48,338 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:40:48,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:40:48,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:40:48,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:40:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 19:40:48,447 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:40:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-14 19:40:48,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576691966] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:40:48,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:40:48,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-10-14 19:40:48,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175766532] [2024-10-14 19:40:48,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:40:48,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 19:40:48,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 19:40:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-10-14 19:40:48,571 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:40:48,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 140 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:48,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:48,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:40:48,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:49,712 INFO L124 PetriNetUnfolderBase]: 899/2079 cut-off events. [2024-10-14 19:40:49,715 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2024-10-14 19:40:49,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6875 conditions, 2079 events. 899/2079 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10229 event pairs, 8 based on Foata normal form. 209/2288 useless extension candidates. Maximal degree in co-relation 3345. Up to 371 conditions per place. [2024-10-14 19:40:49,730 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 471 selfloop transitions, 138 changer transitions 0/613 dead transitions. [2024-10-14 19:40:49,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 613 transitions, 3748 flow [2024-10-14 19:40:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-14 19:40:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-10-14 19:40:49,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1058 transitions. [2024-10-14 19:40:49,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5445187853834277 [2024-10-14 19:40:49,736 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 140 flow. Second operand 67 states and 1058 transitions. [2024-10-14 19:40:49,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 613 transitions, 3748 flow [2024-10-14 19:40:49,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 613 transitions, 3628 flow, removed 54 selfloop flow, removed 1 redundant places. [2024-10-14 19:40:49,750 INFO L231 Difference]: Finished difference. Result has 154 places, 168 transitions, 1566 flow [2024-10-14 19:40:49,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1566, PETRI_PLACES=154, PETRI_TRANSITIONS=168} [2024-10-14 19:40:49,752 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2024-10-14 19:40:49,752 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 168 transitions, 1566 flow [2024-10-14 19:40:49,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:49,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:49,753 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:49,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 19:40:49,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:49,954 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:49,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:49,955 INFO L85 PathProgramCache]: Analyzing trace with hash 518035977, now seen corresponding path program 5 times [2024-10-14 19:40:49,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:49,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209701890] [2024-10-14 19:40:49,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:49,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-14 19:40:50,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209701890] [2024-10-14 19:40:50,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209701890] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:40:50,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423615047] [2024-10-14 19:40:50,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 19:40:50,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:50,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:40:50,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:40:50,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:40:50,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-14 19:40:50,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:40:50,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:40:50,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:40:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-14 19:40:50,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:40:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-14 19:40:50,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423615047] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:40:50,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:40:50,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-14 19:40:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35658612] [2024-10-14 19:40:50,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:40:50,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 19:40:50,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:50,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 19:40:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-14 19:40:50,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:40:50,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 168 transitions, 1566 flow. Second operand has 15 states, 15 states have (on average 11.066666666666666) internal successors, (166), 15 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:50,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:50,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:40:50,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:51,325 INFO L124 PetriNetUnfolderBase]: 1737/4078 cut-off events. [2024-10-14 19:40:51,325 INFO L125 PetriNetUnfolderBase]: For 95210/95210 co-relation queries the response was YES. [2024-10-14 19:40:51,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18062 conditions, 4078 events. 1737/4078 cut-off events. For 95210/95210 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 22813 event pairs, 142 based on Foata normal form. 301/4371 useless extension candidates. Maximal degree in co-relation 16107. Up to 693 conditions per place. [2024-10-14 19:40:51,357 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 249 selfloop transitions, 144 changer transitions 0/403 dead transitions. [2024-10-14 19:40:51,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 403 transitions, 4822 flow [2024-10-14 19:40:51,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:40:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:40:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-10-14 19:40:51,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.583743842364532 [2024-10-14 19:40:51,359 INFO L175 Difference]: Start difference. First operand has 154 places, 168 transitions, 1566 flow. Second operand 14 states and 237 transitions. [2024-10-14 19:40:51,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 403 transitions, 4822 flow [2024-10-14 19:40:51,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 403 transitions, 4678 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:40:51,506 INFO L231 Difference]: Finished difference. Result has 169 places, 235 transitions, 2480 flow [2024-10-14 19:40:51,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2480, PETRI_PLACES=169, PETRI_TRANSITIONS=235} [2024-10-14 19:40:51,507 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 142 predicate places. [2024-10-14 19:40:51,507 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 235 transitions, 2480 flow [2024-10-14 19:40:51,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.066666666666666) internal successors, (166), 15 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:51,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:51,507 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:51,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 19:40:51,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:51,709 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:51,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2096148932, now seen corresponding path program 6 times [2024-10-14 19:40:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:51,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896624362] [2024-10-14 19:40:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-14 19:40:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896624362] [2024-10-14 19:40:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896624362] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:40:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188498423] [2024-10-14 19:40:52,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 19:40:52,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:52,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:40:52,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:40:52,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 19:40:52,240 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-14 19:40:52,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:40:52,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:40:52,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:40:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-14 19:40:52,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:40:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-10-14 19:40:52,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188498423] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:40:52,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:40:52,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-10-14 19:40:52,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836515893] [2024-10-14 19:40:52,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:40:52,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 19:40:52,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 19:40:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-14 19:40:52,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:40:52,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 235 transitions, 2480 flow. Second operand has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:52,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:52,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:40:52,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:54,508 INFO L124 PetriNetUnfolderBase]: 3233/7598 cut-off events. [2024-10-14 19:40:54,509 INFO L125 PetriNetUnfolderBase]: For 455403/455403 co-relation queries the response was YES. [2024-10-14 19:40:54,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36150 conditions, 7598 events. 3233/7598 cut-off events. For 455403/455403 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 46413 event pairs, 122 based on Foata normal form. 510/8108 useless extension candidates. Maximal degree in co-relation 32294. Up to 1339 conditions per place. [2024-10-14 19:40:54,569 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 623 selfloop transitions, 132 changer transitions 0/760 dead transitions. [2024-10-14 19:40:54,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 760 transitions, 9564 flow [2024-10-14 19:40:54,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:40:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:40:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 376 transitions. [2024-10-14 19:40:54,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5893416927899686 [2024-10-14 19:40:54,572 INFO L175 Difference]: Start difference. First operand has 169 places, 235 transitions, 2480 flow. Second operand 22 states and 376 transitions. [2024-10-14 19:40:54,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 760 transitions, 9564 flow [2024-10-14 19:40:54,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 760 transitions, 9254 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 19:40:54,862 INFO L231 Difference]: Finished difference. Result has 196 places, 301 transitions, 3470 flow [2024-10-14 19:40:54,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3470, PETRI_PLACES=196, PETRI_TRANSITIONS=301} [2024-10-14 19:40:54,863 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 169 predicate places. [2024-10-14 19:40:54,863 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 301 transitions, 3470 flow [2024-10-14 19:40:54,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.26086956521739) internal successors, (259), 23 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:54,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:40:54,864 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:40:54,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 19:40:55,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:55,065 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:40:55,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:40:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash 896442158, now seen corresponding path program 7 times [2024-10-14 19:40:55,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:40:55,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218054409] [2024-10-14 19:40:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:40:55,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:40:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-14 19:40:55,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:40:55,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218054409] [2024-10-14 19:40:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218054409] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:40:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027937898] [2024-10-14 19:40:55,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 19:40:55,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:40:55,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:40:55,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:40:55,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 19:40:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:40:55,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:40:55,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:40:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-14 19:40:55,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:40:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-10-14 19:40:55,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027937898] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:40:55,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:40:55,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-10-14 19:40:55,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597062193] [2024-10-14 19:40:55,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:40:55,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 19:40:55,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:40:55,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 19:40:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-10-14 19:40:55,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:40:55,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 301 transitions, 3470 flow. Second operand has 23 states, 23 states have (on average 11.043478260869565) internal successors, (254), 23 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:40:55,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:40:55,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:40:55,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:40:59,412 INFO L124 PetriNetUnfolderBase]: 5485/12756 cut-off events. [2024-10-14 19:40:59,412 INFO L125 PetriNetUnfolderBase]: For 340736/340746 co-relation queries the response was YES. [2024-10-14 19:40:59,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61911 conditions, 12756 events. 5485/12756 cut-off events. For 340736/340746 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 82634 event pairs, 232 based on Foata normal form. 674/13330 useless extension candidates. Maximal degree in co-relation 57477. Up to 2163 conditions per place. [2024-10-14 19:40:59,505 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 611 selfloop transitions, 232 changer transitions 0/859 dead transitions. [2024-10-14 19:40:59,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 859 transitions, 12612 flow [2024-10-14 19:40:59,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:40:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:40:59,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 374 transitions. [2024-10-14 19:40:59,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-10-14 19:40:59,507 INFO L175 Difference]: Start difference. First operand has 196 places, 301 transitions, 3470 flow. Second operand 22 states and 374 transitions. [2024-10-14 19:40:59,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 859 transitions, 12612 flow [2024-10-14 19:41:00,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 859 transitions, 12234 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-14 19:41:00,071 INFO L231 Difference]: Finished difference. Result has 217 places, 390 transitions, 5110 flow [2024-10-14 19:41:00,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5110, PETRI_PLACES=217, PETRI_TRANSITIONS=390} [2024-10-14 19:41:00,073 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 190 predicate places. [2024-10-14 19:41:00,073 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 390 transitions, 5110 flow [2024-10-14 19:41:00,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.043478260869565) internal successors, (254), 23 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:41:00,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:41:00,073 INFO L204 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:41:00,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 19:41:00,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:41:00,274 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:41:00,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:41:00,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1070401404, now seen corresponding path program 8 times [2024-10-14 19:41:00,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:41:00,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352438658] [2024-10-14 19:41:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:41:00,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:41:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:41:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:41:02,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:41:02,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352438658] [2024-10-14 19:41:02,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352438658] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:41:02,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511027093] [2024-10-14 19:41:02,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:41:02,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:41:02,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:41:02,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:41:02,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 19:41:02,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:41:02,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:41:02,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-10-14 19:41:02,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:41:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:41:03,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:41:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:41:03,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511027093] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:41:03,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:41:03,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-10-14 19:41:03,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17364868] [2024-10-14 19:41:03,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:41:03,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-14 19:41:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:41:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-14 19:41:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-10-14 19:41:03,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:41:03,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 390 transitions, 5110 flow. Second operand has 45 states, 45 states have (on average 9.8) internal successors, (441), 45 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:41:03,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:41:03,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:41:03,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:41:17,249 INFO L124 PetriNetUnfolderBase]: 9717/24493 cut-off events. [2024-10-14 19:41:17,250 INFO L125 PetriNetUnfolderBase]: For 1800626/1800626 co-relation queries the response was YES. [2024-10-14 19:41:17,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189669 conditions, 24493 events. 9717/24493 cut-off events. For 1800626/1800626 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 193180 event pairs, 1193 based on Foata normal form. 1/24493 useless extension candidates. Maximal degree in co-relation 146817. Up to 4573 conditions per place. [2024-10-14 19:41:17,661 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 2605 selfloop transitions, 83 changer transitions 2/2710 dead transitions. [2024-10-14 19:41:17,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 2710 transitions, 41131 flow [2024-10-14 19:41:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-14 19:41:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-14 19:41:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 732 transitions. [2024-10-14 19:41:17,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736677115987461 [2024-10-14 19:41:17,664 INFO L175 Difference]: Start difference. First operand has 217 places, 390 transitions, 5110 flow. Second operand 44 states and 732 transitions. [2024-10-14 19:41:17,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 2710 transitions, 41131 flow [2024-10-14 19:41:26,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 2710 transitions, 39525 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-14 19:41:26,215 INFO L231 Difference]: Finished difference. Result has 251 places, 472 transitions, 5210 flow [2024-10-14 19:41:26,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5210, PETRI_PLACES=251, PETRI_TRANSITIONS=472} [2024-10-14 19:41:26,216 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 224 predicate places. [2024-10-14 19:41:26,216 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 472 transitions, 5210 flow [2024-10-14 19:41:26,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 9.8) internal successors, (441), 45 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:41:26,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:41:26,218 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:41:26,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-14 19:41:26,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:41:26,423 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:41:26,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:41:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash -393475920, now seen corresponding path program 9 times [2024-10-14 19:41:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:41:26,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523376643] [2024-10-14 19:41:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:41:26,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:41:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:41:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 135 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-10-14 19:41:27,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:41:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523376643] [2024-10-14 19:41:27,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523376643] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:41:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231093309] [2024-10-14 19:41:27,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:41:27,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:41:27,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:41:27,102 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:41:27,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 19:41:27,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-10-14 19:41:27,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:41:27,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 19:41:27,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:41:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-10-14 19:41:27,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:41:27,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231093309] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:41:27,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 19:41:27,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-10-14 19:41:27,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819771378] [2024-10-14 19:41:27,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:41:27,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 19:41:27,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:41:27,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 19:41:27,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-10-14 19:41:27,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:41:27,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 472 transitions, 5210 flow. Second operand has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:41:27,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:41:27,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:41:27,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:41:33,923 INFO L124 PetriNetUnfolderBase]: 9149/21024 cut-off events. [2024-10-14 19:41:33,924 INFO L125 PetriNetUnfolderBase]: For 781954/781954 co-relation queries the response was YES. [2024-10-14 19:41:34,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138055 conditions, 21024 events. 9149/21024 cut-off events. For 781954/781954 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 158386 event pairs, 83 based on Foata normal form. 89/21112 useless extension candidates. Maximal degree in co-relation 137960. Up to 4121 conditions per place. [2024-10-14 19:41:34,230 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 2218 selfloop transitions, 126 changer transitions 0/2350 dead transitions. [2024-10-14 19:41:34,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 2350 transitions, 23102 flow [2024-10-14 19:41:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:41:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:41:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 378 transitions. [2024-10-14 19:41:34,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5667166416791605 [2024-10-14 19:41:34,234 INFO L175 Difference]: Start difference. First operand has 251 places, 472 transitions, 5210 flow. Second operand 23 states and 378 transitions. [2024-10-14 19:41:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 2350 transitions, 23102 flow [2024-10-14 19:41:36,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 2350 transitions, 23088 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-14 19:41:36,768 INFO L231 Difference]: Finished difference. Result has 270 places, 466 transitions, 5364 flow [2024-10-14 19:41:36,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5364, PETRI_PLACES=270, PETRI_TRANSITIONS=466} [2024-10-14 19:41:36,769 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 243 predicate places. [2024-10-14 19:41:36,769 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 466 transitions, 5364 flow [2024-10-14 19:41:36,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:41:36,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:41:36,770 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:41:36,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 19:41:36,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-14 19:41:36,974 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 19:41:36,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:41:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1879127983, now seen corresponding path program 10 times [2024-10-14 19:41:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:41:36,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317857408] [2024-10-14 19:41:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:41:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:41:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:41:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-10-14 19:41:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:41:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317857408] [2024-10-14 19:41:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317857408] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:41:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818334486] [2024-10-14 19:41:37,465 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 19:41:37,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:41:37,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:41:37,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 19:41:37,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 19:41:37,692 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 19:41:37,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:41:37,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 901 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-14 19:41:37,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:41:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-10-14 19:41:37,793 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:41:37,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818334486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:41:37,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 19:41:37,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-10-14 19:41:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494360371] [2024-10-14 19:41:37,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:41:37,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-14 19:41:37,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:41:37,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-14 19:41:37,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-10-14 19:41:37,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-10-14 19:41:37,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 466 transitions, 5364 flow. Second operand has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:41:37,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:41:37,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-10-14 19:41:37,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:41:41,349 INFO L124 PetriNetUnfolderBase]: 5380/12636 cut-off events. [2024-10-14 19:41:41,349 INFO L125 PetriNetUnfolderBase]: For 238365/238375 co-relation queries the response was YES. [2024-10-14 19:41:41,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67557 conditions, 12636 events. 5380/12636 cut-off events. For 238365/238375 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 84051 event pairs, 157 based on Foata normal form. 93/12632 useless extension candidates. Maximal degree in co-relation 67026. Up to 2163 conditions per place. [2024-10-14 19:41:41,424 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1711/1711 dead transitions. [2024-10-14 19:41:41,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1711 transitions, 18975 flow [2024-10-14 19:41:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-14 19:41:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-14 19:41:41,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 376 transitions. [2024-10-14 19:41:41,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5637181409295352 [2024-10-14 19:41:41,425 INFO L175 Difference]: Start difference. First operand has 270 places, 466 transitions, 5364 flow. Second operand 23 states and 376 transitions. [2024-10-14 19:41:41,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1711 transitions, 18975 flow [2024-10-14 19:41:42,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1711 transitions, 18047 flow, removed 0 selfloop flow, removed 24 redundant places. [2024-10-14 19:41:42,023 INFO L231 Difference]: Finished difference. Result has 264 places, 0 transitions, 0 flow [2024-10-14 19:41:42,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5051, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=264, PETRI_TRANSITIONS=0} [2024-10-14 19:41:42,024 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 237 predicate places. [2024-10-14 19:41:42,024 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 0 transitions, 0 flow [2024-10-14 19:41:42,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.130434782608695) internal successors, (256), 23 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:41:42,027 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2024-10-14 19:41:42,028 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2024-10-14 19:41:42,028 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-14 19:41:42,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-14 19:41:42,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:41:42,232 INFO L407 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2024-10-14 19:41:42,234 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-14 19:41:42,235 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 19:41:42,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 07:41:42 BasicIcfg [2024-10-14 19:41:42,240 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 19:41:42,240 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 19:41:42,240 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 19:41:42,240 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 19:41:42,240 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:40:45" (3/4) ... [2024-10-14 19:41:42,242 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 19:41:42,245 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2024-10-14 19:41:42,248 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2024-10-14 19:41:42,248 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-14 19:41:42,248 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-14 19:41:42,248 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 19:41:42,310 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 19:41:42,313 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 19:41:42,313 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 19:41:42,313 INFO L158 Benchmark]: Toolchain (without parser) took 57622.94ms. Allocated memory was 169.9MB in the beginning and 8.5GB in the end (delta: 8.3GB). Free memory was 101.3MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-10-14 19:41:42,314 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:41:42,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 588.00ms. Allocated memory is still 169.9MB. Free memory was 101.2MB in the beginning and 107.8MB in the end (delta: -6.7MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2024-10-14 19:41:42,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.47ms. Allocated memory is still 169.9MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 19:41:42,314 INFO L158 Benchmark]: Boogie Preprocessor took 47.94ms. Allocated memory is still 169.9MB. Free memory was 105.7MB in the beginning and 103.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 19:41:42,314 INFO L158 Benchmark]: RCFGBuilder took 391.22ms. Allocated memory is still 169.9MB. Free memory was 103.7MB in the beginning and 76.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-14 19:41:42,314 INFO L158 Benchmark]: TraceAbstraction took 56455.95ms. Allocated memory was 169.9MB in the beginning and 8.5GB in the end (delta: 8.3GB). Free memory was 75.7MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-10-14 19:41:42,314 INFO L158 Benchmark]: Witness Printer took 72.92ms. Allocated memory is still 8.5GB. Free memory was 6.8GB in the beginning and 6.8GB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 19:41:42,315 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 588.00ms. Allocated memory is still 169.9MB. Free memory was 101.2MB in the beginning and 107.8MB in the end (delta: -6.7MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.47ms. Allocated memory is still 169.9MB. Free memory was 107.8MB in the beginning and 105.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.94ms. Allocated memory is still 169.9MB. Free memory was 105.7MB in the beginning and 103.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 391.22ms. Allocated memory is still 169.9MB. Free memory was 103.7MB in the beginning and 76.4MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 56455.95ms. Allocated memory was 169.9MB in the beginning and 8.5GB in the end (delta: 8.3GB). Free memory was 75.7MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 72.92ms. Allocated memory is still 8.5GB. Free memory was 6.8GB in the beginning and 6.8GB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1334]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 56.4s, OverallIterations: 12, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 45.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1821 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1806 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22769 IncrementalHoareTripleChecker+Invalid, 22822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 0 mSDtfsCounter, 22769 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2020 GetRequests, 1790 SyntacticMatches, 9 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1563 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5364occurred in iteration=11, InterpolantAutomatonStates: 236, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 2306 NumberOfCodeBlocks, 2278 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 2975 ConstructedInterpolants, 0 QuantifiedInterpolants, 7448 SizeOfPredicates, 22 NumberOfNonLiveVariables, 4711 ConjunctsInSsa, 214 ConjunctsInUnsatCore, 28 InterpolantComputations, 5 PerfectInterpolantSequences, 12758/20839 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 19:41:42,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE