./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.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 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:47:16,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:47:16,313 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:47:16,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:47:16,327 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:47:16,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:47:16,346 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:47:16,347 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:47:16,347 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:47:16,347 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:47:16,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:47:16,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:47:16,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:47:16,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:47:16,354 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:47:16,354 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:47:16,354 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:47:16,355 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:47:16,355 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:47:16,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:47:16,356 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:47:16,356 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:47:16,357 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:47:16,357 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:47:16,357 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:47:16,358 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:47:16,358 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:47:16,358 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:47:16,359 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:47:16,359 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:47:16,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:47:16,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:47:16,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:47:16,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:47:16,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:47:16,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:47:16,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:47:16,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:47:16,363 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:47:16,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:47:16,363 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:47:16,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:47:16,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2024-11-20 17:47:16,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:47:16,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:47:16,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:47:16,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:47:16,636 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:47:16,637 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-20 17:47:18,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:47:18,332 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:47:18,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-20 17:47:18,339 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c1386c0a/794c9b4185e3428da2ec8ae770f78146/FLAGb9d453434 [2024-11-20 17:47:18,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c1386c0a/794c9b4185e3428da2ec8ae770f78146 [2024-11-20 17:47:18,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:47:18,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:47:18,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:47:18,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:47:18,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:47:18,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ace5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18, skipping insertion in model container [2024-11-20 17:47:18,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:47:18,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:47:18,602 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:47:18,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:47:18,639 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:47:18,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18 WrapperNode [2024-11-20 17:47:18,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:47:18,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:47:18,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:47:18,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:47:18,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,674 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 46 [2024-11-20 17:47:18,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:47:18,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:47:18,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:47:18,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:47:18,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,701 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]. [2024-11-20 17:47:18,702 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:47:18,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:47:18,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:47:18,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:47:18,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (1/1) ... [2024-11-20 17:47:18,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:47:18,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:18,752 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) [2024-11-20 17:47:18,754 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 [2024-11-20 17:47:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:47:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:47:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:47:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:47:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:47:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:47:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 17:47:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 17:47:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:47:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:47:18,803 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:47:18,873 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:47:18,876 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:47:19,042 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:47:19,042 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:47:19,176 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:47:19,176 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:47:19,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:19 BoogieIcfgContainer [2024-11-20 17:47:19,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:47:19,180 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:47:19,180 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:47:19,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:47:19,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:47:18" (1/3) ... [2024-11-20 17:47:19,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7803081f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:47:19, skipping insertion in model container [2024-11-20 17:47:19,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:18" (2/3) ... [2024-11-20 17:47:19,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7803081f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:47:19, skipping insertion in model container [2024-11-20 17:47:19,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:19" (3/3) ... [2024-11-20 17:47:19,189 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-20 17:47:19,203 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:47:19,203 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 17:47:19,203 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:47:19,246 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:47:19,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-11-20 17:47:19,345 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-20 17:47:19,346 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:47:19,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-11-20 17:47:19,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-11-20 17:47:19,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-11-20 17:47:19,384 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:47:19,395 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;@5246caf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:47:19,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 17:47:19,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:47:19,409 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-20 17:47:19,412 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:47:19,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:19,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:19,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:19,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:19,419 INFO L85 PathProgramCache]: Analyzing trace with hash 153611902, now seen corresponding path program 1 times [2024-11-20 17:47:19,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:19,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400997253] [2024-11-20 17:47:19,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:19,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:19,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:19,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400997253] [2024-11-20 17:47:19,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400997253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:19,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:19,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:47:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549083765] [2024-11-20 17:47:19,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:19,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:47:19,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:19,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:47:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:47:19,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-20 17:47:19,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 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) [2024-11-20 17:47:19,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:19,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-20 17:47:19,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:19,920 INFO L124 PetriNetUnfolderBase]: 73/148 cut-off events. [2024-11-20 17:47:19,920 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-20 17:47:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 148 events. 73/148 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 436 event pairs, 22 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 256. Up to 74 conditions per place. [2024-11-20 17:47:19,927 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-20 17:47:19,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 127 flow [2024-11-20 17:47:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:47:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:47:19,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-11-20 17:47:19,940 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-11-20 17:47:19,942 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 3 states and 45 transitions. [2024-11-20 17:47:19,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 127 flow [2024-11-20 17:47:19,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:47:19,947 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 52 flow [2024-11-20 17:47:19,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-11-20 17:47:19,956 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2024-11-20 17:47:19,956 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 52 flow [2024-11-20 17:47:19,956 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) [2024-11-20 17:47:19,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:19,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:19,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:47:19,957 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:19,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash 178506475, now seen corresponding path program 1 times [2024-11-20 17:47:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:19,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046457440] [2024-11-20 17:47:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:19,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:20,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:20,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046457440] [2024-11-20 17:47:20,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046457440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:20,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:47:20,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:47:20,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565861513] [2024-11-20 17:47:20,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:20,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:47:20,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:20,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:47:20,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:47:20,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:47:20,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2024-11-20 17:47:20,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:20,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:47:20,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:20,256 INFO L124 PetriNetUnfolderBase]: 142/260 cut-off events. [2024-11-20 17:47:20,257 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-20 17:47:20,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 260 events. 142/260 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 868 event pairs, 81 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 277. Up to 179 conditions per place. [2024-11-20 17:47:20,261 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-11-20 17:47:20,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 117 flow [2024-11-20 17:47:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:47:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:47:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-20 17:47:20,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-11-20 17:47:20,265 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 52 flow. Second operand 4 states and 45 transitions. [2024-11-20 17:47:20,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 117 flow [2024-11-20 17:47:20,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:47:20,266 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-20 17:47:20,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-11-20 17:47:20,267 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-11-20 17:47:20,267 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-20 17:47:20,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2024-11-20 17:47:20,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:20,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:20,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:47:20,269 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:20,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash 808698325, now seen corresponding path program 1 times [2024-11-20 17:47:20,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:20,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354097817] [2024-11-20 17:47:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354097817] [2024-11-20 17:47:20,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354097817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054509656] [2024-11-20 17:47:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:20,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:20,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:20,685 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) [2024-11-20 17:47:20,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:47:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:20,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 17:47:20,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:20,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:21,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054509656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:21,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:21,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 12 [2024-11-20 17:47:21,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044474776] [2024-11-20 17:47:21,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:21,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:47:21,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:21,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:47:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:47:21,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:47:21,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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) [2024-11-20 17:47:21,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:21,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:47:21,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:21,655 INFO L124 PetriNetUnfolderBase]: 402/697 cut-off events. [2024-11-20 17:47:21,655 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-11-20 17:47:21,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 697 events. 402/697 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2889 event pairs, 5 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 598. Up to 184 conditions per place. [2024-11-20 17:47:21,663 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 77 selfloop transitions, 17 changer transitions 10/105 dead transitions. [2024-11-20 17:47:21,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 105 transitions, 522 flow [2024-11-20 17:47:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 17:47:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-20 17:47:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-11-20 17:47:21,670 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5810276679841897 [2024-11-20 17:47:21,670 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 11 states and 147 transitions. [2024-11-20 17:47:21,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 105 transitions, 522 flow [2024-11-20 17:47:21,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 105 transitions, 504 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:21,675 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 197 flow [2024-11-20 17:47:21,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=197, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-11-20 17:47:21,676 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2024-11-20 17:47:21,677 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 197 flow [2024-11-20 17:47:21,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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) [2024-11-20 17:47:21,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:21,677 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:21,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 17:47:21,878 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 [2024-11-20 17:47:21,879 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:21,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash -647721243, now seen corresponding path program 2 times [2024-11-20 17:47:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:21,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899565715] [2024-11-20 17:47:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:22,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:22,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899565715] [2024-11-20 17:47:22,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899565715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:22,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774044926] [2024-11-20 17:47:22,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:47:22,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:22,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:22,032 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) [2024-11-20 17:47:22,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 17:47:22,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:47:22,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:47:22,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:47:22,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:22,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:47:22,148 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:47:22,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774044926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:47:22,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 17:47:22,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-20 17:47:22,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684771348] [2024-11-20 17:47:22,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:47:22,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:47:22,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:22,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:47:22,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 17:47:22,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:47:22,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-20 17:47:22,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:22,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:47:22,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:22,262 INFO L124 PetriNetUnfolderBase]: 396/687 cut-off events. [2024-11-20 17:47:22,262 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2024-11-20 17:47:22,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 687 events. 396/687 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2820 event pairs, 122 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 1965. Up to 605 conditions per place. [2024-11-20 17:47:22,270 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 43 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2024-11-20 17:47:22,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 368 flow [2024-11-20 17:47:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:47:22,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:47:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-11-20 17:47:22,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-20 17:47:22,273 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 197 flow. Second operand 5 states and 55 transitions. [2024-11-20 17:47:22,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 368 flow [2024-11-20 17:47:22,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 340 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-20 17:47:22,287 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 229 flow [2024-11-20 17:47:22,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-20 17:47:22,289 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2024-11-20 17:47:22,290 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 229 flow [2024-11-20 17:47:22,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-11-20 17:47:22,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:22,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:22,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 17:47:22,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-20 17:47:22,495 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:22,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1711533315, now seen corresponding path program 3 times [2024-11-20 17:47:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:22,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591284086] [2024-11-20 17:47:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:22,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:22,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:22,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591284086] [2024-11-20 17:47:22,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591284086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:22,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550028451] [2024-11-20 17:47:22,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:47:22,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:22,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:22,620 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) [2024-11-20 17:47:22,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 17:47:22,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 17:47:22,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:47:22,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:47:22,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:22,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550028451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:23,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:23,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 18 [2024-11-20 17:47:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576359513] [2024-11-20 17:47:23,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:23,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:47:23,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:47:23,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-20 17:47:23,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:47:23,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 229 flow. Second operand has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 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) [2024-11-20 17:47:23,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:23,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:47:23,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:24,073 INFO L124 PetriNetUnfolderBase]: 711/1204 cut-off events. [2024-11-20 17:47:24,073 INFO L125 PetriNetUnfolderBase]: For 1624/1624 co-relation queries the response was YES. [2024-11-20 17:47:24,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3910 conditions, 1204 events. 711/1204 cut-off events. For 1624/1624 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5453 event pairs, 46 based on Foata normal form. 44/1248 useless extension candidates. Maximal degree in co-relation 3730. Up to 358 conditions per place. [2024-11-20 17:47:24,081 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 97 selfloop transitions, 69 changer transitions 6/173 dead transitions. [2024-11-20 17:47:24,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 173 transitions, 1206 flow [2024-11-20 17:47:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-20 17:47:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-20 17:47:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 230 transitions. [2024-11-20 17:47:24,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-20 17:47:24,085 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 229 flow. Second operand 24 states and 230 transitions. [2024-11-20 17:47:24,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 173 transitions, 1206 flow [2024-11-20 17:47:24,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 173 transitions, 1198 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 17:47:24,095 INFO L231 Difference]: Finished difference. Result has 84 places, 106 transitions, 938 flow [2024-11-20 17:47:24,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=938, PETRI_PLACES=84, PETRI_TRANSITIONS=106} [2024-11-20 17:47:24,097 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 59 predicate places. [2024-11-20 17:47:24,098 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 106 transitions, 938 flow [2024-11-20 17:47:24,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 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) [2024-11-20 17:47:24,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:24,099 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:24,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 17:47:24,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:24,300 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:24,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash -418985660, now seen corresponding path program 4 times [2024-11-20 17:47:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:24,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760167330] [2024-11-20 17:47:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:24,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760167330] [2024-11-20 17:47:24,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760167330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195737826] [2024-11-20 17:47:24,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:47:24,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:24,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:24,486 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) [2024-11-20 17:47:24,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 17:47:24,533 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:47:24,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:47:24,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:47:24,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:24,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:24,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195737826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:24,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:24,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-11-20 17:47:24,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665593704] [2024-11-20 17:47:24,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:24,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 17:47:24,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:24,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 17:47:24,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-20 17:47:24,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:47:24,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 106 transitions, 938 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 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) [2024-11-20 17:47:24,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:24,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:47:24,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:25,779 INFO L124 PetriNetUnfolderBase]: 1195/2049 cut-off events. [2024-11-20 17:47:25,780 INFO L125 PetriNetUnfolderBase]: For 19118/19145 co-relation queries the response was YES. [2024-11-20 17:47:25,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11139 conditions, 2049 events. 1195/2049 cut-off events. For 19118/19145 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10733 event pairs, 48 based on Foata normal form. 21/2066 useless extension candidates. Maximal degree in co-relation 10851. Up to 491 conditions per place. [2024-11-20 17:47:25,807 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 132 selfloop transitions, 194 changer transitions 21/372 dead transitions. [2024-11-20 17:47:25,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 372 transitions, 4103 flow [2024-11-20 17:47:25,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 17:47:25,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-20 17:47:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 237 transitions. [2024-11-20 17:47:25,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4683794466403162 [2024-11-20 17:47:25,810 INFO L175 Difference]: Start difference. First operand has 84 places, 106 transitions, 938 flow. Second operand 22 states and 237 transitions. [2024-11-20 17:47:25,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 372 transitions, 4103 flow [2024-11-20 17:47:25,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 372 transitions, 3649 flow, removed 218 selfloop flow, removed 4 redundant places. [2024-11-20 17:47:25,896 INFO L231 Difference]: Finished difference. Result has 117 places, 277 transitions, 3164 flow [2024-11-20 17:47:25,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3164, PETRI_PLACES=117, PETRI_TRANSITIONS=277} [2024-11-20 17:47:25,899 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 92 predicate places. [2024-11-20 17:47:25,899 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 277 transitions, 3164 flow [2024-11-20 17:47:25,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 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) [2024-11-20 17:47:25,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:25,901 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:25,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 17:47:26,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:26,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:26,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:26,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1202640566, now seen corresponding path program 5 times [2024-11-20 17:47:26,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:26,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852883597] [2024-11-20 17:47:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:26,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852883597] [2024-11-20 17:47:26,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852883597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229013658] [2024-11-20 17:47:26,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:47:26,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:26,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:26,295 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) [2024-11-20 17:47:26,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 17:47:26,342 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:47:26,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:47:26,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:47:26,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:26,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:26,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229013658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:26,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:26,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-20 17:47:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553976575] [2024-11-20 17:47:26,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:26,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 17:47:26,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:26,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 17:47:26,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-20 17:47:26,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:47:26,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 277 transitions, 3164 flow. Second operand has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 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) [2024-11-20 17:47:26,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:26,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:47:26,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:27,810 INFO L124 PetriNetUnfolderBase]: 1758/2934 cut-off events. [2024-11-20 17:47:27,811 INFO L125 PetriNetUnfolderBase]: For 40703/40703 co-relation queries the response was YES. [2024-11-20 17:47:27,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18778 conditions, 2934 events. 1758/2934 cut-off events. For 40703/40703 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 15909 event pairs, 38 based on Foata normal form. 55/2989 useless extension candidates. Maximal degree in co-relation 18431. Up to 734 conditions per place. [2024-11-20 17:47:27,848 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 220 selfloop transitions, 358 changer transitions 5/584 dead transitions. [2024-11-20 17:47:27,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 584 transitions, 7804 flow [2024-11-20 17:47:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-20 17:47:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-20 17:47:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 277 transitions. [2024-11-20 17:47:27,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4301242236024845 [2024-11-20 17:47:27,851 INFO L175 Difference]: Start difference. First operand has 117 places, 277 transitions, 3164 flow. Second operand 28 states and 277 transitions. [2024-11-20 17:47:27,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 584 transitions, 7804 flow [2024-11-20 17:47:28,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 584 transitions, 7375 flow, removed 211 selfloop flow, removed 3 redundant places. [2024-11-20 17:47:28,069 INFO L231 Difference]: Finished difference. Result has 160 places, 489 transitions, 6864 flow [2024-11-20 17:47:28,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6864, PETRI_PLACES=160, PETRI_TRANSITIONS=489} [2024-11-20 17:47:28,070 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 135 predicate places. [2024-11-20 17:47:28,070 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 489 transitions, 6864 flow [2024-11-20 17:47:28,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.6875) internal successors, (107), 16 states have internal predecessors, (107), 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) [2024-11-20 17:47:28,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:28,070 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:28,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 17:47:28,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:28,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:28,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash -592233352, now seen corresponding path program 6 times [2024-11-20 17:47:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:28,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215659775] [2024-11-20 17:47:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:28,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:28,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:28,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215659775] [2024-11-20 17:47:28,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215659775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:28,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977241310] [2024-11-20 17:47:28,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:47:28,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:28,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:28,518 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) [2024-11-20 17:47:28,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 17:47:28,564 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-20 17:47:28,565 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:47:28,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:47:28,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:28,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:28,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977241310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:28,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:28,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-11-20 17:47:28,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922780427] [2024-11-20 17:47:28,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:28,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 17:47:28,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 17:47:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-11-20 17:47:28,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:47:28,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 489 transitions, 6864 flow. Second operand has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 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) [2024-11-20 17:47:28,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:28,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:47:28,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:31,168 INFO L124 PetriNetUnfolderBase]: 2134/3655 cut-off events. [2024-11-20 17:47:31,168 INFO L125 PetriNetUnfolderBase]: For 72399/72430 co-relation queries the response was YES. [2024-11-20 17:47:31,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26858 conditions, 3655 events. 2134/3655 cut-off events. For 72399/72430 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 21149 event pairs, 48 based on Foata normal form. 105/3758 useless extension candidates. Maximal degree in co-relation 25465. Up to 899 conditions per place. [2024-11-20 17:47:31,210 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 201 selfloop transitions, 629 changer transitions 4/874 dead transitions. [2024-11-20 17:47:31,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 874 transitions, 13826 flow [2024-11-20 17:47:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-20 17:47:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-20 17:47:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 477 transitions. [2024-11-20 17:47:31,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4412580943570768 [2024-11-20 17:47:31,213 INFO L175 Difference]: Start difference. First operand has 160 places, 489 transitions, 6864 flow. Second operand 47 states and 477 transitions. [2024-11-20 17:47:31,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 874 transitions, 13826 flow [2024-11-20 17:47:31,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 874 transitions, 13271 flow, removed 269 selfloop flow, removed 5 redundant places. [2024-11-20 17:47:31,521 INFO L231 Difference]: Finished difference. Result has 223 places, 736 transitions, 12262 flow [2024-11-20 17:47:31,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=6434, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=12262, PETRI_PLACES=223, PETRI_TRANSITIONS=736} [2024-11-20 17:47:31,522 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 198 predicate places. [2024-11-20 17:47:31,522 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 736 transitions, 12262 flow [2024-11-20 17:47:31,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.95) internal successors, (139), 20 states have internal predecessors, (139), 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) [2024-11-20 17:47:31,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:31,523 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:31,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 17:47:31,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:31,723 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:31,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:31,724 INFO L85 PathProgramCache]: Analyzing trace with hash -94523098, now seen corresponding path program 7 times [2024-11-20 17:47:31,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:31,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946021552] [2024-11-20 17:47:31,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:31,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:31,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:31,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946021552] [2024-11-20 17:47:31,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946021552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811900424] [2024-11-20 17:47:31,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:47:31,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:31,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:31,930 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) [2024-11-20 17:47:31,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 17:47:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:31,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:47:31,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:32,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:32,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811900424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:32,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:32,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-11-20 17:47:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354677795] [2024-11-20 17:47:32,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:32,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:47:32,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:47:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-20 17:47:32,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:47:32,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 736 transitions, 12262 flow. Second operand has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 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) [2024-11-20 17:47:32,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:32,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:47:32,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:34,370 INFO L124 PetriNetUnfolderBase]: 2825/4726 cut-off events. [2024-11-20 17:47:34,370 INFO L125 PetriNetUnfolderBase]: For 106094/106094 co-relation queries the response was YES. [2024-11-20 17:47:34,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38297 conditions, 4726 events. 2825/4726 cut-off events. For 106094/106094 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 27754 event pairs, 44 based on Foata normal form. 18/4744 useless extension candidates. Maximal degree in co-relation 36867. Up to 1223 conditions per place. [2024-11-20 17:47:34,424 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 288 selfloop transitions, 837 changer transitions 2/1128 dead transitions. [2024-11-20 17:47:34,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1128 transitions, 20560 flow [2024-11-20 17:47:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-20 17:47:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-20 17:47:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 360 transitions. [2024-11-20 17:47:34,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41189931350114417 [2024-11-20 17:47:34,429 INFO L175 Difference]: Start difference. First operand has 223 places, 736 transitions, 12262 flow. Second operand 38 states and 360 transitions. [2024-11-20 17:47:34,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 1128 transitions, 20560 flow [2024-11-20 17:47:35,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 1128 transitions, 19843 flow, removed 342 selfloop flow, removed 5 redundant places. [2024-11-20 17:47:35,251 INFO L231 Difference]: Finished difference. Result has 271 places, 995 transitions, 19117 flow [2024-11-20 17:47:35,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=11707, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=584, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=19117, PETRI_PLACES=271, PETRI_TRANSITIONS=995} [2024-11-20 17:47:35,253 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 246 predicate places. [2024-11-20 17:47:35,253 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 995 transitions, 19117 flow [2024-11-20 17:47:35,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 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) [2024-11-20 17:47:35,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:35,253 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:35,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 17:47:35,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:35,454 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:35,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1441668228, now seen corresponding path program 8 times [2024-11-20 17:47:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026045972] [2024-11-20 17:47:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:35,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:35,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026045972] [2024-11-20 17:47:35,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026045972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:35,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051361015] [2024-11-20 17:47:35,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:47:35,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:35,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:35,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:47:35,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 17:47:35,668 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:47:35,668 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:47:35,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:47:35,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:35,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:35,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051361015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:35,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:35,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-20 17:47:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698553446] [2024-11-20 17:47:35,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:35,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 17:47:35,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:35,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 17:47:35,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-20 17:47:35,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:47:35,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 995 transitions, 19117 flow. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 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) [2024-11-20 17:47:35,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:35,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:47:35,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:37,571 INFO L124 PetriNetUnfolderBase]: 3004/5124 cut-off events. [2024-11-20 17:47:37,571 INFO L125 PetriNetUnfolderBase]: For 153578/153597 co-relation queries the response was YES. [2024-11-20 17:47:37,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47284 conditions, 5124 events. 3004/5124 cut-off events. For 153578/153597 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 31824 event pairs, 269 based on Foata normal form. 15/5133 useless extension candidates. Maximal degree in co-relation 46132. Up to 1792 conditions per place. [2024-11-20 17:47:37,635 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 402 selfloop transitions, 752 changer transitions 6/1217 dead transitions. [2024-11-20 17:47:37,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1217 transitions, 25950 flow [2024-11-20 17:47:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 17:47:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-20 17:47:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 167 transitions. [2024-11-20 17:47:37,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.453804347826087 [2024-11-20 17:47:37,637 INFO L175 Difference]: Start difference. First operand has 271 places, 995 transitions, 19117 flow. Second operand 16 states and 167 transitions. [2024-11-20 17:47:37,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1217 transitions, 25950 flow [2024-11-20 17:47:38,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 1217 transitions, 25724 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-11-20 17:47:38,857 INFO L231 Difference]: Finished difference. Result has 291 places, 1152 transitions, 25482 flow [2024-11-20 17:47:38,858 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=18929, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=995, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=25482, PETRI_PLACES=291, PETRI_TRANSITIONS=1152} [2024-11-20 17:47:38,859 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 266 predicate places. [2024-11-20 17:47:38,859 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 1152 transitions, 25482 flow [2024-11-20 17:47:38,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 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) [2024-11-20 17:47:38,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:38,859 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:38,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 17:47:39,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 17:47:39,060 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:39,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:39,060 INFO L85 PathProgramCache]: Analyzing trace with hash -282926934, now seen corresponding path program 9 times [2024-11-20 17:47:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:39,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360896068] [2024-11-20 17:47:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:39,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:39,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:39,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360896068] [2024-11-20 17:47:39,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360896068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:39,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822146934] [2024-11-20 17:47:39,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 17:47:39,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:39,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:39,316 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:47:39,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 17:47:39,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 17:47:39,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:47:39,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:47:39,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:39,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:39,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822146934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:39,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:39,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2024-11-20 17:47:39,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56760378] [2024-11-20 17:47:39,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:39,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:47:39,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:39,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:47:39,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-20 17:47:39,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-20 17:47:39,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1152 transitions, 25482 flow. Second operand has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 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) [2024-11-20 17:47:39,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:39,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-20 17:47:39,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:44,201 INFO L124 PetriNetUnfolderBase]: 5430/8981 cut-off events. [2024-11-20 17:47:44,201 INFO L125 PetriNetUnfolderBase]: For 329368/329368 co-relation queries the response was YES. [2024-11-20 17:47:44,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90813 conditions, 8981 events. 5430/8981 cut-off events. For 329368/329368 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 57666 event pairs, 84 based on Foata normal form. 94/9075 useless extension candidates. Maximal degree in co-relation 89287. Up to 2397 conditions per place. [2024-11-20 17:47:44,311 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 604 selfloop transitions, 1688 changer transitions 19/2312 dead transitions. [2024-11-20 17:47:44,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 2312 transitions, 55505 flow [2024-11-20 17:47:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-20 17:47:44,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-20 17:47:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 450 transitions. [2024-11-20 17:47:44,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4162812210915819 [2024-11-20 17:47:44,315 INFO L175 Difference]: Start difference. First operand has 291 places, 1152 transitions, 25482 flow. Second operand 47 states and 450 transitions. [2024-11-20 17:47:44,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 2312 transitions, 55505 flow [2024-11-20 17:47:48,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 2312 transitions, 54995 flow, removed 233 selfloop flow, removed 2 redundant places. [2024-11-20 17:47:48,312 INFO L231 Difference]: Finished difference. Result has 356 places, 2085 transitions, 53648 flow [2024-11-20 17:47:48,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=25185, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=856, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=53648, PETRI_PLACES=356, PETRI_TRANSITIONS=2085} [2024-11-20 17:47:48,313 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 331 predicate places. [2024-11-20 17:47:48,314 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 2085 transitions, 53648 flow [2024-11-20 17:47:48,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.684210526315789) internal successors, (127), 19 states have internal predecessors, (127), 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) [2024-11-20 17:47:48,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:47:48,314 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:47:48,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 17:47:48,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:48,515 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:47:48,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:47:48,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1105483722, now seen corresponding path program 10 times [2024-11-20 17:47:48,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:47:48,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819271154] [2024-11-20 17:47:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:47:48,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:47:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:47:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:48,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:47:48,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819271154] [2024-11-20 17:47:48,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819271154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:47:48,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356994474] [2024-11-20 17:47:48,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 17:47:48,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:47:48,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:47:48,752 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:47:48,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 17:47:48,798 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 17:47:48,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:47:48,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:47:48,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:47:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:48,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:47:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:47:49,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356994474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:47:49,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:47:49,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-20 17:47:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253741827] [2024-11-20 17:47:49,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:47:49,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 17:47:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:47:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 17:47:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-20 17:47:49,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:47:49,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 2085 transitions, 53648 flow. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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) [2024-11-20 17:47:49,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:47:49,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:47:49,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:47:53,959 INFO L124 PetriNetUnfolderBase]: 5586/9492 cut-off events. [2024-11-20 17:47:53,959 INFO L125 PetriNetUnfolderBase]: For 401263/401272 co-relation queries the response was YES. [2024-11-20 17:47:54,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108018 conditions, 9492 events. 5586/9492 cut-off events. For 401263/401272 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 64646 event pairs, 238 based on Foata normal form. 58/9550 useless extension candidates. Maximal degree in co-relation 106084. Up to 2581 conditions per place. [2024-11-20 17:47:54,110 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 497 selfloop transitions, 1819 changer transitions 7/2425 dead transitions. [2024-11-20 17:47:54,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 2425 transitions, 66484 flow [2024-11-20 17:47:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-20 17:47:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-20 17:47:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 253 transitions. [2024-11-20 17:47:54,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-20 17:47:54,116 INFO L175 Difference]: Start difference. First operand has 356 places, 2085 transitions, 53648 flow. Second operand 23 states and 253 transitions. [2024-11-20 17:47:54,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 2425 transitions, 66484 flow [2024-11-20 17:48:01,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 2425 transitions, 64541 flow, removed 902 selfloop flow, removed 9 redundant places. [2024-11-20 17:48:01,342 INFO L231 Difference]: Finished difference. Result has 384 places, 2329 transitions, 65827 flow [2024-11-20 17:48:01,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=52074, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1593, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=65827, PETRI_PLACES=384, PETRI_TRANSITIONS=2329} [2024-11-20 17:48:01,344 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 359 predicate places. [2024-11-20 17:48:01,345 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 2329 transitions, 65827 flow [2024-11-20 17:48:01,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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) [2024-11-20 17:48:01,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:01,345 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:01,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 17:48:01,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-20 17:48:01,550 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:48:01,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash 903812650, now seen corresponding path program 11 times [2024-11-20 17:48:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:01,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973449236] [2024-11-20 17:48:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:01,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:01,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973449236] [2024-11-20 17:48:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973449236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:01,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807547390] [2024-11-20 17:48:01,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 17:48:01,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:01,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:01,667 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:48:01,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 17:48:01,706 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-20 17:48:01,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:01,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 17:48:01,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:01,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:01,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807547390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:01,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:01,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2024-11-20 17:48:01,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895578751] [2024-11-20 17:48:01,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:01,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 17:48:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 17:48:01,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-20 17:48:01,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:48:01,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 2329 transitions, 65827 flow. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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) [2024-11-20 17:48:01,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:01,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:48:01,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:08,589 INFO L124 PetriNetUnfolderBase]: 5945/10102 cut-off events. [2024-11-20 17:48:08,589 INFO L125 PetriNetUnfolderBase]: For 364280/364315 co-relation queries the response was YES. [2024-11-20 17:48:08,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121957 conditions, 10102 events. 5945/10102 cut-off events. For 364280/364315 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 69523 event pairs, 194 based on Foata normal form. 35/10135 useless extension candidates. Maximal degree in co-relation 120058. Up to 2737 conditions per place. [2024-11-20 17:48:08,865 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 248 selfloop transitions, 2260 changer transitions 4/2614 dead transitions. [2024-11-20 17:48:08,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 2614 transitions, 77838 flow [2024-11-20 17:48:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-20 17:48:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-20 17:48:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 333 transitions. [2024-11-20 17:48:08,866 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41366459627329194 [2024-11-20 17:48:08,866 INFO L175 Difference]: Start difference. First operand has 384 places, 2329 transitions, 65827 flow. Second operand 35 states and 333 transitions. [2024-11-20 17:48:08,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 2614 transitions, 77838 flow [2024-11-20 17:48:17,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 2614 transitions, 77316 flow, removed 205 selfloop flow, removed 6 redundant places. [2024-11-20 17:48:17,142 INFO L231 Difference]: Finished difference. Result has 417 places, 2551 transitions, 78822 flow [2024-11-20 17:48:17,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=65300, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2044, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=78822, PETRI_PLACES=417, PETRI_TRANSITIONS=2551} [2024-11-20 17:48:17,145 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 392 predicate places. [2024-11-20 17:48:17,145 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 2551 transitions, 78822 flow [2024-11-20 17:48:17,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 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) [2024-11-20 17:48:17,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:17,145 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:17,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 17:48:17,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-20 17:48:17,346 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:48:17,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1887676888, now seen corresponding path program 12 times [2024-11-20 17:48:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:17,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540653878] [2024-11-20 17:48:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:17,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540653878] [2024-11-20 17:48:17,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540653878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939874829] [2024-11-20 17:48:17,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 17:48:17,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:17,540 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:48:17,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 17:48:17,581 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-20 17:48:17,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:48:17,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:48:17,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:17,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:17,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939874829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:17,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:17,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-20 17:48:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738911867] [2024-11-20 17:48:17,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:17,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 17:48:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:17,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 17:48:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-20 17:48:17,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:48:17,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 2551 transitions, 78822 flow. Second operand has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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) [2024-11-20 17:48:17,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:17,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:48:17,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:48:25,691 INFO L124 PetriNetUnfolderBase]: 6729/11458 cut-off events. [2024-11-20 17:48:25,691 INFO L125 PetriNetUnfolderBase]: For 494088/494136 co-relation queries the response was YES. [2024-11-20 17:48:25,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149994 conditions, 11458 events. 6729/11458 cut-off events. For 494088/494136 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 80588 event pairs, 651 based on Foata normal form. 80/11528 useless extension candidates. Maximal degree in co-relation 149392. Up to 4244 conditions per place. [2024-11-20 17:48:25,859 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1339 selfloop transitions, 1520 changer transitions 0/2961 dead transitions. [2024-11-20 17:48:25,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 2961 transitions, 96406 flow [2024-11-20 17:48:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-20 17:48:25,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-20 17:48:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 289 transitions. [2024-11-20 17:48:25,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44875776397515527 [2024-11-20 17:48:25,860 INFO L175 Difference]: Start difference. First operand has 417 places, 2551 transitions, 78822 flow. Second operand 28 states and 289 transitions. [2024-11-20 17:48:25,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 2961 transitions, 96406 flow [2024-11-20 17:48:38,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 2961 transitions, 93860 flow, removed 592 selfloop flow, removed 19 redundant places. [2024-11-20 17:48:38,235 INFO L231 Difference]: Finished difference. Result has 445 places, 2824 transitions, 91519 flow [2024-11-20 17:48:38,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=76830, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=91519, PETRI_PLACES=445, PETRI_TRANSITIONS=2824} [2024-11-20 17:48:38,237 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 420 predicate places. [2024-11-20 17:48:38,237 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 2824 transitions, 91519 flow [2024-11-20 17:48:38,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 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) [2024-11-20 17:48:38,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:48:38,238 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:48:38,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 17:48:38,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-20 17:48:38,438 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 17:48:38,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:48:38,439 INFO L85 PathProgramCache]: Analyzing trace with hash 408245248, now seen corresponding path program 13 times [2024-11-20 17:48:38,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:48:38,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352817478] [2024-11-20 17:48:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:48:38,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:48:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:38,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:48:38,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352817478] [2024-11-20 17:48:38,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352817478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:48:38,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413836787] [2024-11-20 17:48:38,596 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 17:48:38,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:48:38,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:48:38,598 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 17:48:38,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 17:48:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:48:38,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 17:48:38,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:48:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:38,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:48:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:48:38,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413836787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:48:38,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:48:38,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-11-20 17:48:38,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013758335] [2024-11-20 17:48:38,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:48:38,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 17:48:38,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:48:38,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 17:48:38,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-20 17:48:38,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-20 17:48:38,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 2824 transitions, 91519 flow. Second operand has 18 states, 18 states have (on average 7.055555555555555) internal successors, (127), 18 states have internal predecessors, (127), 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) [2024-11-20 17:48:38,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:48:38,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-20 17:48:38,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand