./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:50:45,397 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:50:45,445 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:50:45,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:50:45,449 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:50:45,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:50:45,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:50:45,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:50:45,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:50:45,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:50:45,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:50:45,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:50:45,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:50:45,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:50:45,473 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:50:45,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:50:45,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:50:45,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:50:45,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:50:45,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:50:45,475 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:50:45,475 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:50:45,475 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:50:45,476 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:50:45,476 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:50:45,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:50:45,476 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:50:45,477 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:50:45,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:50:45,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:50:45,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:50:45,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:50:45,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:50:45,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:50:45,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:50:45,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:50:45,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:50:45,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:50:45,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:50:45,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:50:45,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:50:45,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:50:45,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-11-22 21:50:45,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:50:45,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:50:45,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:50:45,709 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:50:45,709 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:50:45,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-22 21:50:46,997 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:50:47,148 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:50:47,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-22 21:50:47,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70aeae45e/f1211e11c6e449b0bd067a2a21e1603a/FLAGee2631f0a [2024-11-22 21:50:47,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70aeae45e/f1211e11c6e449b0bd067a2a21e1603a [2024-11-22 21:50:47,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:50:47,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:50:47,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:50:47,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:50:47,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:50:47,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a54dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47, skipping insertion in model container [2024-11-22 21:50:47,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:50:47,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:50:47,345 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:50:47,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:50:47,386 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:50:47,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47 WrapperNode [2024-11-22 21:50:47,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:50:47,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:50:47,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:50:47,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:50:47,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,401 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,420 INFO L138 Inliner]: procedures = 22, calls = 23, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2024-11-22 21:50:47,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:50:47,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:50:47,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:50:47,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:50:47,431 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,449 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 21:50:47,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:50:47,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:50:47,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:50:47,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:50:47,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (1/1) ... [2024-11-22 21:50:47,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:50:47,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:47,497 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 21:50:47,499 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 21:50:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:50:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:50:47,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:50:47,533 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:50:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:50:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 21:50:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 21:50:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-22 21:50:47,534 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-22 21:50:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:50:47,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:50:47,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:50:47,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:50:47,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:50:47,556 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 21:50:47,665 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:50:47,667 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:50:47,851 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:50:47,851 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:50:47,969 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:50:47,969 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 21:50:47,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:50:47 BoogieIcfgContainer [2024-11-22 21:50:47,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:50:47,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:50:47,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:50:47,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:50:47,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:50:47" (1/3) ... [2024-11-22 21:50:47,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79069541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:50:47, skipping insertion in model container [2024-11-22 21:50:47,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:50:47" (2/3) ... [2024-11-22 21:50:47,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79069541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:50:47, skipping insertion in model container [2024-11-22 21:50:47,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:50:47" (3/3) ... [2024-11-22 21:50:47,979 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-11-22 21:50:47,992 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:50:47,993 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:50:47,993 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:50:48,035 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 21:50:48,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-22 21:50:48,098 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-22 21:50:48,098 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:50:48,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-22 21:50:48,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-22 21:50:48,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-22 21:50:48,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:50:48,122 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;@c5b1746, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:50:48,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 21:50:48,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:50:48,141 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-22 21:50:48,141 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:50:48,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:48,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:48,143 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:50:48,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1923112110, now seen corresponding path program 1 times [2024-11-22 21:50:48,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423905531] [2024-11-22 21:50:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:50:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:48,495 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 21:50:48,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:48,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423905531] [2024-11-22 21:50:48,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423905531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:48,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:48,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:50:48,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382650847] [2024-11-22 21:50:48,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:48,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:50:48,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:50:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:50:48,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-11-22 21:50:48,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 21:50:48,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:48,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-11-22 21:50:48,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:48,971 INFO L124 PetriNetUnfolderBase]: 3042/4219 cut-off events. [2024-11-22 21:50:48,972 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-11-22 21:50:48,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 4219 events. 3042/4219 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18643 event pairs, 763 based on Foata normal form. 153/4362 useless extension candidates. Maximal degree in co-relation 7613. Up to 3203 conditions per place. [2024-11-22 21:50:49,001 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-22 21:50:49,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-11-22 21:50:49,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:50:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:50:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-22 21:50:49,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2024-11-22 21:50:49,013 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 85 transitions. [2024-11-22 21:50:49,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-11-22 21:50:49,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-22 21:50:49,025 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-22 21:50:49,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-22 21:50:49,032 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-22 21:50:49,032 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-22 21:50:49,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 21:50:49,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:49,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:49,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:50:49,033 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:50:49,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash -56319925, now seen corresponding path program 1 times [2024-11-22 21:50:49,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:49,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233306926] [2024-11-22 21:50:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:50:49,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:49,215 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 21:50:49,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:49,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233306926] [2024-11-22 21:50:49,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233306926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:49,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:49,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:50:49,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209755484] [2024-11-22 21:50:49,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:49,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:50:49,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:49,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:50:49,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:50:49,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:50:49,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 21:50:49,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:49,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:50:49,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:50,183 INFO L124 PetriNetUnfolderBase]: 11992/15976 cut-off events. [2024-11-22 21:50:50,185 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-22 21:50:50,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33896 conditions, 15976 events. 11992/15976 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 80196 event pairs, 4358 based on Foata normal form. 0/12611 useless extension candidates. Maximal degree in co-relation 9557. Up to 8661 conditions per place. [2024-11-22 21:50:50,272 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-22 21:50:50,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-11-22 21:50:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:50:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:50:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-22 21:50:50,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-22 21:50:50,276 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 134 transitions. [2024-11-22 21:50:50,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-11-22 21:50:50,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:50:50,281 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-11-22 21:50:50,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-22 21:50:50,283 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-22 21:50:50,283 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-11-22 21:50:50,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 21:50:50,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:50,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:50,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:50:50,285 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:50:50,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:50,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1593058387, now seen corresponding path program 2 times [2024-11-22 21:50:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569747254] [2024-11-22 21:50:50,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:50:50,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:50,316 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:50:50,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:50,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569747254] [2024-11-22 21:50:50,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569747254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:50,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051959683] [2024-11-22 21:50:50,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:50:50,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:50,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:50,568 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 21:50:50,570 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 21:50:50,632 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:50:50,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:50,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:50:50,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:50,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:50,742 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 21:50:50,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051959683] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:50,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:50:50,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 8 [2024-11-22 21:50:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625760793] [2024-11-22 21:50:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:50,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:50:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:50:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:50:50,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:50:50,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 21:50:50,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:50,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:50:50,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:51,767 INFO L124 PetriNetUnfolderBase]: 12658/17153 cut-off events. [2024-11-22 21:50:51,767 INFO L125 PetriNetUnfolderBase]: For 8311/8337 co-relation queries the response was YES. [2024-11-22 21:50:51,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45630 conditions, 17153 events. 12658/17153 cut-off events. For 8311/8337 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 90108 event pairs, 1573 based on Foata normal form. 498/17456 useless extension candidates. Maximal degree in co-relation 24178. Up to 7881 conditions per place. [2024-11-22 21:50:51,861 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 88 selfloop transitions, 7 changer transitions 2/102 dead transitions. [2024-11-22 21:50:51,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 102 transitions, 564 flow [2024-11-22 21:50:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:50:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:50:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-22 21:50:51,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-22 21:50:51,862 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 108 transitions. [2024-11-22 21:50:51,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 102 transitions, 564 flow [2024-11-22 21:50:51,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 102 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:50:51,872 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 225 flow [2024-11-22 21:50:51,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-22 21:50:51,873 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2024-11-22 21:50:51,874 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 225 flow [2024-11-22 21:50:51,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 21:50:51,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:51,874 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:51,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:50:52,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:52,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:50:52,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1245906665, now seen corresponding path program 3 times [2024-11-22 21:50:52,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:52,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448801016] [2024-11-22 21:50:52,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:50:52,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:52,091 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:50:52,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:52,136 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 21:50:52,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:52,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448801016] [2024-11-22 21:50:52,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448801016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:52,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:52,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:50:52,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703299860] [2024-11-22 21:50:52,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:52,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:50:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:50:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:50:52,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:50:52,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 21:50:52,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:52,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:50:52,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:53,664 INFO L124 PetriNetUnfolderBase]: 19082/25450 cut-off events. [2024-11-22 21:50:53,664 INFO L125 PetriNetUnfolderBase]: For 29339/29419 co-relation queries the response was YES. [2024-11-22 21:50:53,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79026 conditions, 25450 events. 19082/25450 cut-off events. For 29339/29419 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 135330 event pairs, 6037 based on Foata normal form. 554/25483 useless extension candidates. Maximal degree in co-relation 31028. Up to 10557 conditions per place. [2024-11-22 21:50:53,841 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 90 selfloop transitions, 6 changer transitions 4/105 dead transitions. [2024-11-22 21:50:53,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 640 flow [2024-11-22 21:50:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:50:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:50:53,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-22 21:50:53,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-11-22 21:50:53,845 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 225 flow. Second operand 4 states and 110 transitions. [2024-11-22 21:50:53,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 640 flow [2024-11-22 21:50:53,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 105 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:50:53,861 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 271 flow [2024-11-22 21:50:53,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-11-22 21:50:53,863 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2024-11-22 21:50:53,863 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 271 flow [2024-11-22 21:50:53,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 21:50:53,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:53,864 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:53,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:50:53,864 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:50:53,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:53,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1049103311, now seen corresponding path program 4 times [2024-11-22 21:50:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883772019] [2024-11-22 21:50:53,865 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:50:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:53,881 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:50:53,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:53,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:53,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:53,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883772019] [2024-11-22 21:50:53,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883772019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:53,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403880929] [2024-11-22 21:50:53,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:50:53,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:53,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:53,989 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 21:50:53,994 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 21:50:54,062 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:50:54,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:54,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:50:54,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:54,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:54,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403880929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:54,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:54,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-11-22 21:50:54,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790452428] [2024-11-22 21:50:54,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:54,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:50:54,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:50:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:50:54,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:50:54,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 21:50:54,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:54,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:50:54,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:57,671 INFO L124 PetriNetUnfolderBase]: 37801/51563 cut-off events. [2024-11-22 21:50:57,672 INFO L125 PetriNetUnfolderBase]: For 92478/92578 co-relation queries the response was YES. [2024-11-22 21:50:57,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176515 conditions, 51563 events. 37801/51563 cut-off events. For 92478/92578 co-relation queries the response was YES. Maximal size of possible extension queue 1779. Compared 312079 event pairs, 1707 based on Foata normal form. 3806/54199 useless extension candidates. Maximal degree in co-relation 67032. Up to 9423 conditions per place. [2024-11-22 21:50:58,177 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 349 selfloop transitions, 126 changer transitions 15/495 dead transitions. [2024-11-22 21:50:58,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 495 transitions, 3543 flow [2024-11-22 21:50:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 21:50:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-22 21:50:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 653 transitions. [2024-11-22 21:50:58,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5758377425044092 [2024-11-22 21:50:58,180 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 271 flow. Second operand 27 states and 653 transitions. [2024-11-22 21:50:58,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 495 transitions, 3543 flow [2024-11-22 21:50:58,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 495 transitions, 3256 flow, removed 110 selfloop flow, removed 2 redundant places. [2024-11-22 21:50:58,240 INFO L231 Difference]: Finished difference. Result has 104 places, 173 transitions, 1437 flow [2024-11-22 21:50:58,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1437, PETRI_PLACES=104, PETRI_TRANSITIONS=173} [2024-11-22 21:50:58,241 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 58 predicate places. [2024-11-22 21:50:58,241 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 173 transitions, 1437 flow [2024-11-22 21:50:58,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 21:50:58,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:58,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:58,258 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 21:50:58,442 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 21:50:58,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:50:58,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1388252591, now seen corresponding path program 5 times [2024-11-22 21:50:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766783284] [2024-11-22 21:50:58,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:50:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:58,455 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:50:58,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:58,527 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 21:50:58,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766783284] [2024-11-22 21:50:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766783284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:58,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:58,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:50:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402382379] [2024-11-22 21:50:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:58,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:50:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:50:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:50:58,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:50:58,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 173 transitions, 1437 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 21:50:58,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:58,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:50:58,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:51:03,486 INFO L124 PetriNetUnfolderBase]: 42502/57180 cut-off events. [2024-11-22 21:51:03,486 INFO L125 PetriNetUnfolderBase]: For 573376/574016 co-relation queries the response was YES. [2024-11-22 21:51:03,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290356 conditions, 57180 events. 42502/57180 cut-off events. For 573376/574016 co-relation queries the response was YES. Maximal size of possible extension queue 1908. Compared 340596 event pairs, 11450 based on Foata normal form. 1418/57000 useless extension candidates. Maximal degree in co-relation 249291. Up to 28994 conditions per place. [2024-11-22 21:51:04,107 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 356 selfloop transitions, 47 changer transitions 0/408 dead transitions. [2024-11-22 21:51:04,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 408 transitions, 4329 flow [2024-11-22 21:51:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:51:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:51:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-22 21:51:04,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-22 21:51:04,109 INFO L175 Difference]: Start difference. First operand has 104 places, 173 transitions, 1437 flow. Second operand 4 states and 108 transitions. [2024-11-22 21:51:04,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 408 transitions, 4329 flow [2024-11-22 21:51:13,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 408 transitions, 4087 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-11-22 21:51:13,005 INFO L231 Difference]: Finished difference. Result has 106 places, 210 transitions, 1924 flow [2024-11-22 21:51:13,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1924, PETRI_PLACES=106, PETRI_TRANSITIONS=210} [2024-11-22 21:51:13,006 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 60 predicate places. [2024-11-22 21:51:13,006 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 210 transitions, 1924 flow [2024-11-22 21:51:13,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 21:51:13,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:51:13,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:51:13,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:51:13,007 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:51:13,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:51:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1024722241, now seen corresponding path program 1 times [2024-11-22 21:51:13,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:51:13,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006485267] [2024-11-22 21:51:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:51:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:51:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:51:13,076 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 21:51:13,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:51:13,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006485267] [2024-11-22 21:51:13,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006485267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:51:13,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:51:13,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:51:13,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936335950] [2024-11-22 21:51:13,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:51:13,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:51:13,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:51:13,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:51:13,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:51:13,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:51:13,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 210 transitions, 1924 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 21:51:13,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:51:13,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:51:13,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:51:17,995 INFO L124 PetriNetUnfolderBase]: 40829/54874 cut-off events. [2024-11-22 21:51:17,996 INFO L125 PetriNetUnfolderBase]: For 571542/571974 co-relation queries the response was YES. [2024-11-22 21:51:18,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293414 conditions, 54874 events. 40829/54874 cut-off events. For 571542/571974 co-relation queries the response was YES. Maximal size of possible extension queue 1768. Compared 319163 event pairs, 15181 based on Foata normal form. 169/53629 useless extension candidates. Maximal degree in co-relation 257573. Up to 36314 conditions per place. [2024-11-22 21:51:18,721 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 192 selfloop transitions, 30 changer transitions 33/260 dead transitions. [2024-11-22 21:51:18,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 260 transitions, 2798 flow [2024-11-22 21:51:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:51:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:51:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-22 21:51:18,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-11-22 21:51:18,723 INFO L175 Difference]: Start difference. First operand has 106 places, 210 transitions, 1924 flow. Second operand 5 states and 129 transitions. [2024-11-22 21:51:18,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 260 transitions, 2798 flow [2024-11-22 21:51:28,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 260 transitions, 2698 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-11-22 21:51:28,743 INFO L231 Difference]: Finished difference. Result has 110 places, 204 transitions, 1875 flow [2024-11-22 21:51:28,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1875, PETRI_PLACES=110, PETRI_TRANSITIONS=204} [2024-11-22 21:51:28,745 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 64 predicate places. [2024-11-22 21:51:28,745 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 204 transitions, 1875 flow [2024-11-22 21:51:28,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 21:51:28,745 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:51:28,745 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:51:28,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:51:28,745 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:51:28,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:51:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash -196947741, now seen corresponding path program 6 times [2024-11-22 21:51:28,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:51:28,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665089198] [2024-11-22 21:51:28,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:51:28,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:51:28,761 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:51:28,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:51:28,807 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 21:51:28,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:51:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665089198] [2024-11-22 21:51:28,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665089198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:51:28,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:51:28,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:51:28,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335560387] [2024-11-22 21:51:28,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:51:28,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:51:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:51:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:51:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:51:28,818 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:51:28,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 204 transitions, 1875 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 21:51:28,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:51:28,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:51:28,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:51:34,769 INFO L124 PetriNetUnfolderBase]: 53226/72034 cut-off events. [2024-11-22 21:51:34,769 INFO L125 PetriNetUnfolderBase]: For 773172/773468 co-relation queries the response was YES. [2024-11-22 21:51:35,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385329 conditions, 72034 events. 53226/72034 cut-off events. For 773172/773468 co-relation queries the response was YES. Maximal size of possible extension queue 2238. Compared 441807 event pairs, 16167 based on Foata normal form. 1044/70919 useless extension candidates. Maximal degree in co-relation 353753. Up to 32395 conditions per place. [2024-11-22 21:51:36,090 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 300 selfloop transitions, 23 changer transitions 11/339 dead transitions. [2024-11-22 21:51:36,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 339 transitions, 3741 flow [2024-11-22 21:51:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:51:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:51:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-22 21:51:36,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-22 21:51:36,092 INFO L175 Difference]: Start difference. First operand has 110 places, 204 transitions, 1875 flow. Second operand 4 states and 108 transitions. [2024-11-22 21:51:36,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 339 transitions, 3741 flow [2024-11-22 21:51:50,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 339 transitions, 3605 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-11-22 21:51:50,458 INFO L231 Difference]: Finished difference. Result has 109 places, 207 transitions, 1963 flow [2024-11-22 21:51:50,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1963, PETRI_PLACES=109, PETRI_TRANSITIONS=207} [2024-11-22 21:51:50,459 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-11-22 21:51:50,459 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 207 transitions, 1963 flow [2024-11-22 21:51:50,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 21:51:50,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:51:50,459 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:51:50,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:51:50,459 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:51:50,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:51:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1524373325, now seen corresponding path program 7 times [2024-11-22 21:51:50,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:51:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950850007] [2024-11-22 21:51:50,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:51:50,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:51:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:51:50,545 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 21:51:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:51:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950850007] [2024-11-22 21:51:50,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950850007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:51:50,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:51:50,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:51:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159137505] [2024-11-22 21:51:50,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:51:50,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:51:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:51:50,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:51:50,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:51:50,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:51:50,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 207 transitions, 1963 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 21:51:50,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:51:50,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:51:50,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand