./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:35:23,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:35:23,359 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:35:23,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:35:23,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:35:23,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:35:23,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:35:23,388 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:35:23,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:35:23,389 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:35:23,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:35:23,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:35:23,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:35:23,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:35:23,391 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:35:23,391 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:35:23,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:35:23,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:35:23,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:35:23,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:35:23,393 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:35:23,394 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:35:23,394 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:35:23,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:35:23,394 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:35:23,395 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:35:23,395 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:35:23,395 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:35:23,395 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:35:23,396 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:35:23,396 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:35:23,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:35:23,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:35:23,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:35:23,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:35:23,397 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:35:23,397 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:35:23,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:35:23,398 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:35:23,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:35:23,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:35:23,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:35:23,399 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-11-22 21:35:23,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:35:23,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:35:23,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:35:23,687 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:35:23,687 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:35:23,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-22 21:35:25,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:35:25,258 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:35:25,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-22 21:35:25,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce09885f6/ca9520de2f0449e48ad7f373d520bf94/FLAG9a885511e [2024-11-22 21:35:25,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce09885f6/ca9520de2f0449e48ad7f373d520bf94 [2024-11-22 21:35:25,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:35:25,294 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:35:25,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:35:25,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:35:25,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:35:25,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:35:25" (1/1) ... [2024-11-22 21:35:25,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab3e12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:25, skipping insertion in model container [2024-11-22 21:35:25,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:35:25" (1/1) ... [2024-11-22 21:35:25,335 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:35:25,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:35:25,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:35:25,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:35:26,041 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:35:26,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26 WrapperNode [2024-11-22 21:35:26,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:35:26,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:35:26,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:35:26,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:35:26,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,069 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,095 INFO L138 Inliner]: procedures = 364, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-22 21:35:26,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:35:26,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:35:26,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:35:26,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:35:26,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,111 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,125 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]. [2024-11-22 21:35:26,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,132 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,133 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:35:26,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:35:26,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:35:26,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:35:26,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (1/1) ... [2024-11-22 21:35:26,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:35:26,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:26,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:35:26,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:35:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 21:35:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 21:35:26,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:35:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-11-22 21:35:26,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-11-22 21:35:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:35:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:35:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:35:26,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:35:26,224 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:35:26,354 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:35:26,357 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:35:26,470 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:35:26,471 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:35:26,620 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:35:26,620 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:35:26,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:26 BoogieIcfgContainer [2024-11-22 21:35:26,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:35:26,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:35:26,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:35:26,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:35:26,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:35:25" (1/3) ... [2024-11-22 21:35:26,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1a2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:35:26, skipping insertion in model container [2024-11-22 21:35:26,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:35:26" (2/3) ... [2024-11-22 21:35:26,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1a2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:35:26, skipping insertion in model container [2024-11-22 21:35:26,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:35:26" (3/3) ... [2024-11-22 21:35:26,628 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-11-22 21:35:26,641 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:35:26,641 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:35:26,641 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:35:26,665 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-22 21:35:26,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 29 transitions, 65 flow [2024-11-22 21:35:26,708 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-22 21:35:26,708 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:35:26,710 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. [2024-11-22 21:35:26,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 29 transitions, 65 flow [2024-11-22 21:35:26,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 27 transitions, 60 flow [2024-11-22 21:35:26,719 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:35:26,724 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;@3d5d997b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:35:26,725 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 21:35:26,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:35:26,732 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-22 21:35:26,732 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:35:26,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:26,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:26,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:26,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash -54454784, now seen corresponding path program 1 times [2024-11-22 21:35:26,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:26,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149492564] [2024-11-22 21:35:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:26,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:26,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:26,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149492564] [2024-11-22 21:35:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149492564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:26,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:26,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:35:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342438550] [2024-11-22 21:35:26,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:26,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:35:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:26,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:35:26,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:35:26,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-22 21:35:26,945 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) [2024-11-22 21:35:26,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:26,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-22 21:35:26,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:27,008 INFO L124 PetriNetUnfolderBase]: 61/135 cut-off events. [2024-11-22 21:35:27,008 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-22 21:35:27,009 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. [2024-11-22 21:35:27,014 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2024-11-22 21:35:27,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 124 flow [2024-11-22 21:35:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:35:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:35:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-22 21:35:27,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-22 21:35:27,029 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-22 21:35:27,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 124 flow [2024-11-22 21:35:27,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 32 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:35:27,033 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2024-11-22 21:35:27,035 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} [2024-11-22 21:35:27,039 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2024-11-22 21:35:27,040 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2024-11-22 21:35:27,040 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) [2024-11-22 21:35:27,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:27,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:27,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:35:27,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:27,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1209453456, now seen corresponding path program 1 times [2024-11-22 21:35:27,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:27,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884035156] [2024-11-22 21:35:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:27,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:27,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884035156] [2024-11-22 21:35:27,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884035156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:27,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:27,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:35:27,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478596984] [2024-11-22 21:35:27,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:27,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:35:27,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:35:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:35:27,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-22 21:35:27,222 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) [2024-11-22 21:35:27,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:27,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-22 21:35:27,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:27,323 INFO L124 PetriNetUnfolderBase]: 101/222 cut-off events. [2024-11-22 21:35:27,327 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-11-22 21:35:27,328 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. [2024-11-22 21:35:27,331 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-22 21:35:27,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 33 transitions, 146 flow [2024-11-22 21:35:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:35:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:35:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-22 21:35:27,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-22 21:35:27,334 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 49 transitions. [2024-11-22 21:35:27,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 33 transitions, 146 flow [2024-11-22 21:35:27,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:27,336 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 66 flow [2024-11-22 21:35:27,337 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} [2024-11-22 21:35:27,337 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2024-11-22 21:35:27,337 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 66 flow [2024-11-22 21:35:27,337 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) [2024-11-22 21:35:27,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:27,338 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] [2024-11-22 21:35:27,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:35:27,338 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:27,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:27,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2077585499, now seen corresponding path program 1 times [2024-11-22 21:35:27,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:27,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783593041] [2024-11-22 21:35:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:35:27,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:27,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783593041] [2024-11-22 21:35:27,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783593041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:35:27,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:35:27,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:35:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169794021] [2024-11-22 21:35:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:35:27,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:35:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:35:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:35:27,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-22 21:35:27,460 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) [2024-11-22 21:35:27,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:27,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-22 21:35:27,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:27,515 INFO L124 PetriNetUnfolderBase]: 69/171 cut-off events. [2024-11-22 21:35:27,516 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-22 21:35:27,516 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. [2024-11-22 21:35:27,517 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 23 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-11-22 21:35:27,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 154 flow [2024-11-22 21:35:27,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:35:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:35:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-11-22 21:35:27,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-11-22 21:35:27,519 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 66 flow. Second operand 3 states and 46 transitions. [2024-11-22 21:35:27,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 154 flow [2024-11-22 21:35:27,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:27,520 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 72 flow [2024-11-22 21:35:27,520 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} [2024-11-22 21:35:27,521 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-11-22 21:35:27,521 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 72 flow [2024-11-22 21:35:27,521 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) [2024-11-22 21:35:27,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:27,521 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] [2024-11-22 21:35:27,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:35:27,522 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:27,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -834231567, now seen corresponding path program 2 times [2024-11-22 21:35:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:27,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071622975] [2024-11-22 21:35:27,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:35:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:27,538 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:35:27,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:27,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071622975] [2024-11-22 21:35:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071622975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762852281] [2024-11-22 21:35:27,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:35:27,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:27,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:27,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:27,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:35:27,673 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:35:27,673 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:27,675 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 21:35:27,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:27,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:27,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762852281] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:27,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:27,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 21:35:27,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899523221] [2024-11-22 21:35:27,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:27,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:35:27,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:27,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:35:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:35:27,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 21:35:27,754 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) [2024-11-22 21:35:27,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:27,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 21:35:27,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:27,854 INFO L124 PetriNetUnfolderBase]: 167/379 cut-off events. [2024-11-22 21:35:27,854 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-11-22 21:35:27,856 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. [2024-11-22 21:35:27,858 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 57 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2024-11-22 21:35:27,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 66 transitions, 348 flow [2024-11-22 21:35:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:35:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:35:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-22 21:35:27,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-11-22 21:35:27,860 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 72 flow. Second operand 6 states and 97 transitions. [2024-11-22 21:35:27,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 66 transitions, 348 flow [2024-11-22 21:35:27,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 66 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:27,863 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 108 flow [2024-11-22 21:35:27,863 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} [2024-11-22 21:35:27,864 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2024-11-22 21:35:27,864 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 108 flow [2024-11-22 21:35:27,864 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) [2024-11-22 21:35:27,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:27,865 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] [2024-11-22 21:35:27,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:35:28,065 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 [2024-11-22 21:35:28,066 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:28,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash -36039780, now seen corresponding path program 3 times [2024-11-22 21:35:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273904340] [2024-11-22 21:35:28,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:35:28,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:28,087 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:35:28,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:28,129 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 21:35:28,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:28,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273904340] [2024-11-22 21:35:28,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273904340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:28,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388681726] [2024-11-22 21:35:28,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:35:28,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:28,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:28,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:28,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:35:28,193 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:35:28,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:28,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 21:35:28,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 21:35:28,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-22 21:35:28,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388681726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:28,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:28,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 21:35:28,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046179475] [2024-11-22 21:35:28,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:28,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:35:28,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:35:28,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:35:28,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 21:35:28,459 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) [2024-11-22 21:35:28,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:28,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 21:35:28,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:28,600 INFO L124 PetriNetUnfolderBase]: 294/695 cut-off events. [2024-11-22 21:35:28,600 INFO L125 PetriNetUnfolderBase]: For 864/864 co-relation queries the response was YES. [2024-11-22 21:35:28,602 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. [2024-11-22 21:35:28,605 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 67 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-11-22 21:35:28,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 77 transitions, 518 flow [2024-11-22 21:35:28,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:35:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:35:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-22 21:35:28,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2024-11-22 21:35:28,606 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 108 flow. Second operand 6 states and 97 transitions. [2024-11-22 21:35:28,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 77 transitions, 518 flow [2024-11-22 21:35:28,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 77 transitions, 478 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:28,610 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 140 flow [2024-11-22 21:35:28,611 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} [2024-11-22 21:35:28,611 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2024-11-22 21:35:28,611 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 140 flow [2024-11-22 21:35:28,611 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) [2024-11-22 21:35:28,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:28,612 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] [2024-11-22 21:35:28,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:35:28,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:28,813 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:28,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:28,813 INFO L85 PathProgramCache]: Analyzing trace with hash 198452272, now seen corresponding path program 4 times [2024-11-22 21:35:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255971719] [2024-11-22 21:35:28,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:35:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:28,843 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:35:28,843 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 21:35:28,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255971719] [2024-11-22 21:35:28,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255971719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094701253] [2024-11-22 21:35:28,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:35:28,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:28,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:28,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:28,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:35:29,052 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:35:29,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:29,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:35:29,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-22 21:35:29,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-22 21:35:29,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094701253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:29,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:29,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-22 21:35:29,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218550619] [2024-11-22 21:35:29,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:29,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:35:29,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:35:29,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:35:29,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 21:35:29,257 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) [2024-11-22 21:35:29,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:29,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 21:35:29,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:30,377 INFO L124 PetriNetUnfolderBase]: 899/2079 cut-off events. [2024-11-22 21:35:30,377 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2024-11-22 21:35:30,382 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. [2024-11-22 21:35:30,390 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 471 selfloop transitions, 138 changer transitions 0/613 dead transitions. [2024-11-22 21:35:30,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 613 transitions, 3748 flow [2024-11-22 21:35:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-22 21:35:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-11-22 21:35:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1058 transitions. [2024-11-22 21:35:30,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5445187853834277 [2024-11-22 21:35:30,395 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 140 flow. Second operand 67 states and 1058 transitions. [2024-11-22 21:35:30,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 613 transitions, 3748 flow [2024-11-22 21:35:30,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 613 transitions, 3628 flow, removed 54 selfloop flow, removed 1 redundant places. [2024-11-22 21:35:30,409 INFO L231 Difference]: Finished difference. Result has 154 places, 168 transitions, 1566 flow [2024-11-22 21:35:30,409 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} [2024-11-22 21:35:30,410 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2024-11-22 21:35:30,410 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 168 transitions, 1566 flow [2024-11-22 21:35:30,410 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) [2024-11-22 21:35:30,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:30,411 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] [2024-11-22 21:35:30,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 21:35:30,611 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 [2024-11-22 21:35:30,612 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:30,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash 518035977, now seen corresponding path program 5 times [2024-11-22 21:35:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:30,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235184627] [2024-11-22 21:35:30,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:35:30,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:30,659 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-22 21:35:30,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 5 proven. 235 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-22 21:35:30,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:30,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235184627] [2024-11-22 21:35:30,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235184627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:30,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256268154] [2024-11-22 21:35:30,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:35:30,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:30,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:30,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:30,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:35:31,007 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-22 21:35:31,007 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:31,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 21:35:31,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-22 21:35:31,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-22 21:35:31,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256268154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:31,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:31,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 25 [2024-11-22 21:35:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451230850] [2024-11-22 21:35:31,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:31,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 21:35:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 21:35:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2024-11-22 21:35:31,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 21:35:31,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 168 transitions, 1566 flow. Second operand has 25 states, 25 states have (on average 10.76) internal successors, (269), 25 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:35:31,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:31,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 21:35:31,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:35,385 INFO L124 PetriNetUnfolderBase]: 2031/4760 cut-off events. [2024-11-22 21:35:35,386 INFO L125 PetriNetUnfolderBase]: For 153203/153204 co-relation queries the response was YES. [2024-11-22 21:35:35,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20751 conditions, 4760 events. 2031/4760 cut-off events. For 153203/153204 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 27119 event pairs, 59 based on Foata normal form. 414/5164 useless extension candidates. Maximal degree in co-relation 18638. Up to 819 conditions per place. [2024-11-22 21:35:35,433 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 1087 selfloop transitions, 350 changer transitions 0/1447 dead transitions. [2024-11-22 21:35:35,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 1447 transitions, 10840 flow [2024-11-22 21:35:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2024-11-22 21:35:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2024-11-22 21:35:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 2450 transitions. [2024-11-22 21:35:35,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5381067428069405 [2024-11-22 21:35:35,446 INFO L175 Difference]: Start difference. First operand has 154 places, 168 transitions, 1566 flow. Second operand 157 states and 2450 transitions. [2024-11-22 21:35:35,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 1447 transitions, 10840 flow [2024-11-22 21:35:35,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1447 transitions, 10678 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 21:35:35,584 INFO L231 Difference]: Finished difference. Result has 405 places, 388 transitions, 4740 flow [2024-11-22 21:35:35,587 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=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=157, PETRI_FLOW=4740, PETRI_PLACES=405, PETRI_TRANSITIONS=388} [2024-11-22 21:35:35,587 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 378 predicate places. [2024-11-22 21:35:35,587 INFO L471 AbstractCegarLoop]: Abstraction has has 405 places, 388 transitions, 4740 flow [2024-11-22 21:35:35,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.76) internal successors, (269), 25 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:35:35,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:35,589 INFO L204 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:35:35,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 21:35:35,789 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 [2024-11-22 21:35:35,790 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:35,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:35,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1260338154, now seen corresponding path program 6 times [2024-11-22 21:35:35,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:35,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381531206] [2024-11-22 21:35:35,791 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:35:35,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:35,898 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 21:35:35,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 12 proven. 286 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-22 21:35:36,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:36,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381531206] [2024-11-22 21:35:36,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381531206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:36,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875170250] [2024-11-22 21:35:36,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:35:36,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:36,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:36,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:36,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:35:36,480 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 21:35:36,480 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:36,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 21:35:36,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 12 proven. 286 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-22 21:35:36,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 12 proven. 286 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-22 21:35:36,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875170250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:36,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:36,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 23 [2024-11-22 21:35:36,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698853311] [2024-11-22 21:35:36,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:36,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 21:35:36,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 21:35:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-22 21:35:36,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 21:35:36,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 388 transitions, 4740 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) [2024-11-22 21:35:36,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:36,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 21:35:36,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:39,935 INFO L124 PetriNetUnfolderBase]: 3315/7754 cut-off events. [2024-11-22 21:35:39,936 INFO L125 PetriNetUnfolderBase]: For 1233468/1233468 co-relation queries the response was YES. [2024-11-22 21:35:39,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48453 conditions, 7754 events. 3315/7754 cut-off events. For 1233468/1233468 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 46902 event pairs, 176 based on Foata normal form. 459/8203 useless extension candidates. Maximal degree in co-relation 43404. Up to 1339 conditions per place. [2024-11-22 21:35:40,033 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 623 selfloop transitions, 279 changer transitions 0/918 dead transitions. [2024-11-22 21:35:40,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 918 transitions, 15390 flow [2024-11-22 21:35:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 21:35:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-22 21:35:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 375 transitions. [2024-11-22 21:35:40,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5877742946708464 [2024-11-22 21:35:40,035 INFO L175 Difference]: Start difference. First operand has 405 places, 388 transitions, 4740 flow. Second operand 22 states and 375 transitions. [2024-11-22 21:35:40,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 918 transitions, 15390 flow [2024-11-22 21:35:42,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 918 transitions, 14908 flow, removed 70 selfloop flow, removed 54 redundant places. [2024-11-22 21:35:42,041 INFO L231 Difference]: Finished difference. Result has 382 places, 498 transitions, 6426 flow [2024-11-22 21:35:42,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4258, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6426, PETRI_PLACES=382, PETRI_TRANSITIONS=498} [2024-11-22 21:35:42,045 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 355 predicate places. [2024-11-22 21:35:42,045 INFO L471 AbstractCegarLoop]: Abstraction has has 382 places, 498 transitions, 6426 flow [2024-11-22 21:35:42,045 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) [2024-11-22 21:35:42,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:42,045 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] [2024-11-22 21:35:42,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 21:35:42,246 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 [2024-11-22 21:35:42,246 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:42,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1909948638, now seen corresponding path program 7 times [2024-11-22 21:35:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591190639] [2024-11-22 21:35:42,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:35:42,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-11-22 21:35:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591190639] [2024-11-22 21:35:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591190639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262205810] [2024-11-22 21:35:42,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:35:42,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:42,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:42,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:42,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:35:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:35:42,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:35:42,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-11-22 21:35:42,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 20 proven. 342 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-11-22 21:35:43,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262205810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:43,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:43,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-22 21:35:43,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102112472] [2024-11-22 21:35:43,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:43,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 21:35:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 21:35:43,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-22 21:35:43,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 21:35:43,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 498 transitions, 6426 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) [2024-11-22 21:35:43,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:43,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 21:35:43,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:35:48,594 INFO L124 PetriNetUnfolderBase]: 5485/12820 cut-off events. [2024-11-22 21:35:48,595 INFO L125 PetriNetUnfolderBase]: For 4101135/4101145 co-relation queries the response was YES. [2024-11-22 21:35:48,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79428 conditions, 12820 events. 5485/12820 cut-off events. For 4101135/4101145 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 83432 event pairs, 239 based on Foata normal form. 682/13408 useless extension candidates. Maximal degree in co-relation 70521. Up to 2163 conditions per place. [2024-11-22 21:35:48,816 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 867 selfloop transitions, 306 changer transitions 0/1189 dead transitions. [2024-11-22 21:35:48,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1189 transitions, 18866 flow [2024-11-22 21:35:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 21:35:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-22 21:35:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 374 transitions. [2024-11-22 21:35:48,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-22 21:35:48,823 INFO L175 Difference]: Start difference. First operand has 382 places, 498 transitions, 6426 flow. Second operand 22 states and 374 transitions. [2024-11-22 21:35:48,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1189 transitions, 18866 flow [2024-11-22 21:35:53,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1189 transitions, 18228 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-22 21:35:53,122 INFO L231 Difference]: Finished difference. Result has 401 places, 622 transitions, 8372 flow [2024-11-22 21:35:53,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6140, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8372, PETRI_PLACES=401, PETRI_TRANSITIONS=622} [2024-11-22 21:35:53,125 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 374 predicate places. [2024-11-22 21:35:53,125 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 622 transitions, 8372 flow [2024-11-22 21:35:53,125 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) [2024-11-22 21:35:53,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:35:53,125 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] [2024-11-22 21:35:53,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 21:35:53,326 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 [2024-11-22 21:35:53,326 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-22 21:35:53,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:35:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1535257160, now seen corresponding path program 8 times [2024-11-22 21:35:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:35:53,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557659912] [2024-11-22 21:35:53,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:35:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:35:53,429 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:35:53,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:55,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:35:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557659912] [2024-11-22 21:35:55,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557659912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:35:55,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666059606] [2024-11-22 21:35:55,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:35:55,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:35:55,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:35:55,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:35:55,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:35:55,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:35:55,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:35:55,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-22 21:35:55,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:35:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:55,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:35:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:35:56,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666059606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:35:56,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:35:56,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-11-22 21:35:56,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841472101] [2024-11-22 21:35:56,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:35:56,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-22 21:35:56,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:35:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-22 21:35:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 21:35:56,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-22 21:35:56,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 622 transitions, 8372 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) [2024-11-22 21:35:56,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:35:56,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-22 21:35:56,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:36:16,888 INFO L124 PetriNetUnfolderBase]: 10320/27458 cut-off events. [2024-11-22 21:36:16,889 INFO L125 PetriNetUnfolderBase]: For 8691137/8691137 co-relation queries the response was YES. [2024-11-22 21:36:17,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322888 conditions, 27458 events. 10320/27458 cut-off events. For 8691137/8691137 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 229011 event pairs, 1318 based on Foata normal form. 1/27348 useless extension candidates. Maximal degree in co-relation 242471. Up to 4648 conditions per place. [2024-11-22 21:36:18,058 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 3308 selfloop transitions, 83 changer transitions 2/3435 dead transitions. [2024-11-22 21:36:18,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 3435 transitions, 57565 flow [2024-11-22 21:36:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-22 21:36:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-22 21:36:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 732 transitions. [2024-11-22 21:36:18,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736677115987461 [2024-11-22 21:36:18,067 INFO L175 Difference]: Start difference. First operand has 401 places, 622 transitions, 8372 flow. Second operand 44 states and 732 transitions. [2024-11-22 21:36:18,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 3435 transitions, 57565 flow