./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-counter-determinism.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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:47:15,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:47:15,302 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:47:15,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:47:15,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:47:15,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:47:15,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:47:15,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:47:15,348 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:47:15,349 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:47:15,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:47:15,349 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:47:15,350 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:47:15,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:47:15,351 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:47:15,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:47:15,351 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:47:15,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:47:15,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:47:15,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:47:15,352 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:47:15,355 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:47:15,355 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:47:15,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:47:15,357 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:47:15,357 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:47:15,358 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:47:15,358 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:47:15,358 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:47:15,358 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:47:15,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:47:15,359 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:47:15,359 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:47:15,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:47:15,360 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:47:15,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:47:15,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:47:15,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:47:15,361 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:47:15,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:47:15,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:47:15,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:47:15,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-22 21:47:15,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:47:15,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:47:15,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:47:15,597 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:47:15,598 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:47:15,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-22 21:47:16,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:47:17,117 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:47:17,118 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-22 21:47:17,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a9f4499f/035c91a62b09479d88adc27ebf478b93/FLAGa437bd857 [2024-11-22 21:47:17,529 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a9f4499f/035c91a62b09479d88adc27ebf478b93 [2024-11-22 21:47:17,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:47:17,532 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:47:17,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:47:17,533 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:47:17,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:47:17,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3335fdf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17, skipping insertion in model container [2024-11-22 21:47:17,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,563 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:47:17,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:47:17,751 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:47:17,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:47:17,785 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:47:17,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17 WrapperNode [2024-11-22 21:47:17,786 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:47:17,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:47:17,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:47:17,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:47:17,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,810 INFO L138 Inliner]: procedures = 20, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 96 [2024-11-22 21:47:17,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:47:17,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:47:17,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:47:17,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:47:17,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,830 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 21:47:17,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,837 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:47:17,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:47:17,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:47:17,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:47:17,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (1/1) ... [2024-11-22 21:47:17,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:47:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:17,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:47:17,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:47:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:47:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:47:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:47:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:47:17,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:47:17,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 21:47:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 21:47:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-22 21:47:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-22 21:47:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:47:17,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:47:17,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:47:17,901 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:47:17,968 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:47:17,970 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:47:18,136 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:47:18,136 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:47:18,253 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:47:18,253 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 21:47:18,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:47:18 BoogieIcfgContainer [2024-11-22 21:47:18,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:47:18,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:47:18,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:47:18,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:47:18,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:47:17" (1/3) ... [2024-11-22 21:47:18,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4658de1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:47:18, skipping insertion in model container [2024-11-22 21:47:18,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:17" (2/3) ... [2024-11-22 21:47:18,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4658de1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:47:18, skipping insertion in model container [2024-11-22 21:47:18,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:47:18" (3/3) ... [2024-11-22 21:47:18,262 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-22 21:47:18,276 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:47:18,276 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:47:18,276 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:47:18,324 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 21:47:18,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 42 transitions, 112 flow [2024-11-22 21:47:18,377 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-11-22 21:47:18,378 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:47:18,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 38 events. 4/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-22 21:47:18,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 42 transitions, 112 flow [2024-11-22 21:47:18,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 98 flow [2024-11-22 21:47:18,390 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:47:18,395 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;@6c23f178, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:47:18,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 21:47:18,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:47:18,405 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-22 21:47:18,406 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:47:18,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:18,406 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:18,407 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:18,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:18,411 INFO L85 PathProgramCache]: Analyzing trace with hash 40613773, now seen corresponding path program 1 times [2024-11-22 21:47:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:18,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988837721] [2024-11-22 21:47:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:18,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:18,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:18,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988837721] [2024-11-22 21:47:18,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988837721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:18,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:18,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:47:18,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212960077] [2024-11-22 21:47:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:18,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:47:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:18,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:47:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:47:18,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-11-22 21:47:18,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:18,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:18,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-11-22 21:47:18,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:19,227 INFO L124 PetriNetUnfolderBase]: 4206/5682 cut-off events. [2024-11-22 21:47:19,227 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-11-22 21:47:19,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11670 conditions, 5682 events. 4206/5682 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23972 event pairs, 1080 based on Foata normal form. 2/5293 useless extension candidates. Maximal degree in co-relation 10307. Up to 4714 conditions per place. [2024-11-22 21:47:19,301 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-22 21:47:19,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-22 21:47:19,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:47:19,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:47:19,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-22 21:47:19,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-22 21:47:19,326 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 98 flow. Second operand 3 states and 81 transitions. [2024-11-22 21:47:19,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-22 21:47:19,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-22 21:47:19,342 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-22 21:47:19,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-22 21:47:19,349 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-11-22 21:47:19,349 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-22 21:47:19,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:19,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:19,349 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:19,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:47:19,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:19,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:19,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1127953092, now seen corresponding path program 1 times [2024-11-22 21:47:19,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:19,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960035350] [2024-11-22 21:47:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:19,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960035350] [2024-11-22 21:47:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960035350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:19,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623283705] [2024-11-22 21:47:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:19,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:19,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:19,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:19,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:19,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:19,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:19,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:19,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:20,393 INFO L124 PetriNetUnfolderBase]: 9567/12563 cut-off events. [2024-11-22 21:47:20,393 INFO L125 PetriNetUnfolderBase]: For 1508/1508 co-relation queries the response was YES. [2024-11-22 21:47:20,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27973 conditions, 12563 events. 9567/12563 cut-off events. For 1508/1508 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 59440 event pairs, 3002 based on Foata normal form. 0/11896 useless extension candidates. Maximal degree in co-relation 3413. Up to 6920 conditions per place. [2024-11-22 21:47:20,444 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 94 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2024-11-22 21:47:20,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 106 transitions, 491 flow [2024-11-22 21:47:20,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-11-22 21:47:20,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-22 21:47:20,447 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 133 transitions. [2024-11-22 21:47:20,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 106 transitions, 491 flow [2024-11-22 21:47:20,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 106 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:20,450 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 161 flow [2024-11-22 21:47:20,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-22 21:47:20,451 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2024-11-22 21:47:20,451 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 161 flow [2024-11-22 21:47:20,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:20,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:20,451 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:20,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:47:20,452 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:20,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:20,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1995278604, now seen corresponding path program 2 times [2024-11-22 21:47:20,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:20,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965291279] [2024-11-22 21:47:20,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:20,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:20,469 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:20,470 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:20,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:20,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965291279] [2024-11-22 21:47:20,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965291279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:20,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99416336] [2024-11-22 21:47:20,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:20,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:20,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:20,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:20,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:47:20,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:20,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:20,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:47:20,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:20,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:20,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:20,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99416336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:20,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:20,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2024-11-22 21:47:20,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560131525] [2024-11-22 21:47:20,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:20,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 21:47:20,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:20,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 21:47:20,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:47:20,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:20,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 161 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:20,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:20,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:20,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:22,433 INFO L124 PetriNetUnfolderBase]: 17600/22965 cut-off events. [2024-11-22 21:47:22,434 INFO L125 PetriNetUnfolderBase]: For 9250/9250 co-relation queries the response was YES. [2024-11-22 21:47:22,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59936 conditions, 22965 events. 17600/22965 cut-off events. For 9250/9250 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 112612 event pairs, 1213 based on Foata normal form. 0/22081 useless extension candidates. Maximal degree in co-relation 33397. Up to 4329 conditions per place. [2024-11-22 21:47:22,531 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 254 selfloop transitions, 38 changer transitions 0/293 dead transitions. [2024-11-22 21:47:22,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 293 transitions, 1509 flow [2024-11-22 21:47:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:47:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 21:47:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 352 transitions. [2024-11-22 21:47:22,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5986394557823129 [2024-11-22 21:47:22,540 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 161 flow. Second operand 14 states and 352 transitions. [2024-11-22 21:47:22,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 293 transitions, 1509 flow [2024-11-22 21:47:22,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 293 transitions, 1509 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:47:22,554 INFO L231 Difference]: Finished difference. Result has 63 places, 78 transitions, 387 flow [2024-11-22 21:47:22,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=387, PETRI_PLACES=63, PETRI_TRANSITIONS=78} [2024-11-22 21:47:22,556 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2024-11-22 21:47:22,556 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 78 transitions, 387 flow [2024-11-22 21:47:22,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:22,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:22,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:22,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:47:22,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:22,758 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:22,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:22,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1973583774, now seen corresponding path program 3 times [2024-11-22 21:47:22,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:22,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233993242] [2024-11-22 21:47:22,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:22,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:22,776 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:47:22,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:22,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:22,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233993242] [2024-11-22 21:47:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233993242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:22,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:22,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:22,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464470746] [2024-11-22 21:47:22,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:22,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:22,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:22,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:22,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:22,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 78 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:22,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:22,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:22,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:25,180 INFO L124 PetriNetUnfolderBase]: 27170/35373 cut-off events. [2024-11-22 21:47:25,181 INFO L125 PetriNetUnfolderBase]: For 45616/45921 co-relation queries the response was YES. [2024-11-22 21:47:25,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110907 conditions, 35373 events. 27170/35373 cut-off events. For 45616/45921 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 187262 event pairs, 7969 based on Foata normal form. 225/35299 useless extension candidates. Maximal degree in co-relation 83136. Up to 16738 conditions per place. [2024-11-22 21:47:25,520 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 170 selfloop transitions, 10 changer transitions 0/189 dead transitions. [2024-11-22 21:47:25,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 189 transitions, 1264 flow [2024-11-22 21:47:25,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-22 21:47:25,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-22 21:47:25,522 INFO L175 Difference]: Start difference. First operand has 63 places, 78 transitions, 387 flow. Second operand 5 states and 132 transitions. [2024-11-22 21:47:25,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 189 transitions, 1264 flow [2024-11-22 21:47:25,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 189 transitions, 1264 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:47:25,655 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 479 flow [2024-11-22 21:47:25,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2024-11-22 21:47:25,655 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2024-11-22 21:47:25,655 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 479 flow [2024-11-22 21:47:25,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:25,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:25,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:25,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:47:25,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:25,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash 459858204, now seen corresponding path program 1 times [2024-11-22 21:47:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319005025] [2024-11-22 21:47:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:25,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:25,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319005025] [2024-11-22 21:47:25,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319005025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:25,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:25,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:25,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471586167] [2024-11-22 21:47:25,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:25,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:25,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:25,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:25,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:25,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:25,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:25,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:25,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:25,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:27,635 INFO L124 PetriNetUnfolderBase]: 24745/32502 cut-off events. [2024-11-22 21:47:27,635 INFO L125 PetriNetUnfolderBase]: For 53266/53476 co-relation queries the response was YES. [2024-11-22 21:47:27,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106473 conditions, 32502 events. 24745/32502 cut-off events. For 53266/53476 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 169242 event pairs, 7886 based on Foata normal form. 36/32460 useless extension candidates. Maximal degree in co-relation 83012. Up to 16361 conditions per place. [2024-11-22 21:47:27,874 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 106 selfloop transitions, 21 changer transitions 15/146 dead transitions. [2024-11-22 21:47:27,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 146 transitions, 998 flow [2024-11-22 21:47:27,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-11-22 21:47:27,876 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238095238095238 [2024-11-22 21:47:27,879 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 479 flow. Second operand 5 states and 131 transitions. [2024-11-22 21:47:27,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 146 transitions, 998 flow [2024-11-22 21:47:28,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 146 transitions, 978 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:28,176 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 527 flow [2024-11-22 21:47:28,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=527, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2024-11-22 21:47:28,176 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2024-11-22 21:47:28,177 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 527 flow [2024-11-22 21:47:28,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:28,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:28,177 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:28,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:47:28,177 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:28,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:28,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1231208400, now seen corresponding path program 2 times [2024-11-22 21:47:28,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:28,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800113123] [2024-11-22 21:47:28,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:28,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:28,186 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:28,186 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:28,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:28,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:28,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800113123] [2024-11-22 21:47:28,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800113123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:28,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035627349] [2024-11-22 21:47:28,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:28,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:28,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:28,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:28,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:47:28,276 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:28,276 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:28,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:47:28,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:28,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:28,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035627349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:28,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:28,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-22 21:47:28,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557510789] [2024-11-22 21:47:28,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:28,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 21:47:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:28,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 21:47:28,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:47:28,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:28,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 527 flow. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:28,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:28,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:28,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:32,260 INFO L124 PetriNetUnfolderBase]: 46301/60524 cut-off events. [2024-11-22 21:47:32,260 INFO L125 PetriNetUnfolderBase]: For 117897/118198 co-relation queries the response was YES. [2024-11-22 21:47:32,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199999 conditions, 60524 events. 46301/60524 cut-off events. For 117897/118198 co-relation queries the response was YES. Maximal size of possible extension queue 1911. Compared 328724 event pairs, 2301 based on Foata normal form. 1311/61781 useless extension candidates. Maximal degree in co-relation 152734. Up to 13057 conditions per place. [2024-11-22 21:47:32,696 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 444 selfloop transitions, 67 changer transitions 4/519 dead transitions. [2024-11-22 21:47:32,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 519 transitions, 4445 flow [2024-11-22 21:47:32,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:47:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 21:47:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 338 transitions. [2024-11-22 21:47:32,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5748299319727891 [2024-11-22 21:47:32,699 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 527 flow. Second operand 14 states and 338 transitions. [2024-11-22 21:47:32,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 519 transitions, 4445 flow [2024-11-22 21:47:34,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 519 transitions, 4189 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-22 21:47:34,150 INFO L231 Difference]: Finished difference. Result has 91 places, 141 transitions, 1012 flow [2024-11-22 21:47:34,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1012, PETRI_PLACES=91, PETRI_TRANSITIONS=141} [2024-11-22 21:47:34,151 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-11-22 21:47:34,151 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 141 transitions, 1012 flow [2024-11-22 21:47:34,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:34,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:34,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:34,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:47:34,352 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,SelfDestructingSolverStorable5 [2024-11-22 21:47:34,353 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:34,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1970324260, now seen corresponding path program 4 times [2024-11-22 21:47:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617435085] [2024-11-22 21:47:34,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:34,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:34,360 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:34,361 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:34,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617435085] [2024-11-22 21:47:34,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617435085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:34,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:34,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:34,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426966374] [2024-11-22 21:47:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:34,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:34,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:34,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:34,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:34,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 141 transitions, 1012 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:34,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:34,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:34,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:38,879 INFO L124 PetriNetUnfolderBase]: 53407/69446 cut-off events. [2024-11-22 21:47:38,879 INFO L125 PetriNetUnfolderBase]: For 190551/190551 co-relation queries the response was YES. [2024-11-22 21:47:39,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267350 conditions, 69446 events. 53407/69446 cut-off events. For 190551/190551 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 366369 event pairs, 21314 based on Foata normal form. 32/69478 useless extension candidates. Maximal degree in co-relation 232910. Up to 39046 conditions per place. [2024-11-22 21:47:39,312 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 182 selfloop transitions, 34 changer transitions 18/235 dead transitions. [2024-11-22 21:47:39,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 235 transitions, 2117 flow [2024-11-22 21:47:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-22 21:47:39,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-22 21:47:39,314 INFO L175 Difference]: Start difference. First operand has 91 places, 141 transitions, 1012 flow. Second operand 5 states and 120 transitions. [2024-11-22 21:47:39,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 235 transitions, 2117 flow [2024-11-22 21:47:44,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 235 transitions, 2099 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-22 21:47:44,140 INFO L231 Difference]: Finished difference. Result has 97 places, 141 transitions, 1078 flow [2024-11-22 21:47:44,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1078, PETRI_PLACES=97, PETRI_TRANSITIONS=141} [2024-11-22 21:47:44,141 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2024-11-22 21:47:44,141 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 141 transitions, 1078 flow [2024-11-22 21:47:44,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:44,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:44,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:44,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:47:44,142 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:44,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:44,142 INFO L85 PathProgramCache]: Analyzing trace with hash -129682204, now seen corresponding path program 3 times [2024-11-22 21:47:44,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:44,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782091868] [2024-11-22 21:47:44,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:44,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:44,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:47:44,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:44,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:44,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782091868] [2024-11-22 21:47:44,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782091868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:44,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:44,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:47:44,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913760938] [2024-11-22 21:47:44,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:44,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:47:44,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:47:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:47:44,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:47:44,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 141 transitions, 1078 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:44,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:44,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:47:44,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:48,799 INFO L124 PetriNetUnfolderBase]: 57505/74816 cut-off events. [2024-11-22 21:47:48,799 INFO L125 PetriNetUnfolderBase]: For 216817/216817 co-relation queries the response was YES. [2024-11-22 21:47:49,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290689 conditions, 74816 events. 57505/74816 cut-off events. For 216817/216817 co-relation queries the response was YES. Maximal size of possible extension queue 2070. Compared 402214 event pairs, 5007 based on Foata normal form. 1320/76136 useless extension candidates. Maximal degree in co-relation 251754. Up to 20756 conditions per place. [2024-11-22 21:47:49,312 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 247 selfloop transitions, 102 changer transitions 7/357 dead transitions. [2024-11-22 21:47:49,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 357 transitions, 3168 flow [2024-11-22 21:47:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:47:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:47:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-11-22 21:47:49,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-22 21:47:49,316 INFO L175 Difference]: Start difference. First operand has 97 places, 141 transitions, 1078 flow. Second operand 9 states and 224 transitions. [2024-11-22 21:47:49,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 357 transitions, 3168 flow [2024-11-22 21:47:54,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 357 transitions, 3046 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-22 21:47:54,610 INFO L231 Difference]: Finished difference. Result has 105 places, 182 transitions, 1698 flow [2024-11-22 21:47:54,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1698, PETRI_PLACES=105, PETRI_TRANSITIONS=182} [2024-11-22 21:47:54,615 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2024-11-22 21:47:54,615 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 182 transitions, 1698 flow [2024-11-22 21:47:54,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:54,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:54,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:54,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:47:54,616 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:47:54,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:54,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1696157018, now seen corresponding path program 5 times [2024-11-22 21:47:54,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:54,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223280439] [2024-11-22 21:47:54,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:54,631 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:54,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223280439] [2024-11-22 21:47:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223280439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:54,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:54,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406015276] [2024-11-22 21:47:54,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:54,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:54,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:54,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-11-22 21:47:54,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 182 transitions, 1698 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:54,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:54,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-11-22 21:47:54,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:48:00,192 INFO L124 PetriNetUnfolderBase]: 57830/75770 cut-off events. [2024-11-22 21:48:00,192 INFO L125 PetriNetUnfolderBase]: For 306594/307700 co-relation queries the response was YES. [2024-11-22 21:48:00,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313942 conditions, 75770 events. 57830/75770 cut-off events. For 306594/307700 co-relation queries the response was YES. Maximal size of possible extension queue 2546. Compared 437961 event pairs, 6801 based on Foata normal form. 1406/77010 useless extension candidates. Maximal degree in co-relation 283224. Up to 24030 conditions per place. [2024-11-22 21:48:01,063 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 438 selfloop transitions, 55 changer transitions 1/518 dead transitions. [2024-11-22 21:48:01,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 518 transitions, 4928 flow [2024-11-22 21:48:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:48:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:48:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-11-22 21:48:01,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6058201058201058 [2024-11-22 21:48:01,064 INFO L175 Difference]: Start difference. First operand has 105 places, 182 transitions, 1698 flow. Second operand 9 states and 229 transitions. [2024-11-22 21:48:01,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 518 transitions, 4928 flow [2024-11-22 21:48:03,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 518 transitions, 4878 flow, removed 25 selfloop flow, removed 0 redundant places. [2024-11-22 21:48:03,828 INFO L231 Difference]: Finished difference. Result has 116 places, 212 transitions, 2096 flow [2024-11-22 21:48:03,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2096, PETRI_PLACES=116, PETRI_TRANSITIONS=212} [2024-11-22 21:48:03,829 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-11-22 21:48:03,829 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 212 transitions, 2096 flow [2024-11-22 21:48:03,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:48:03,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:48:03,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:48:03,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:48:03,830 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:48:03,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:48:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1341302230, now seen corresponding path program 4 times [2024-11-22 21:48:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:48:03,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027123252] [2024-11-22 21:48:03,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:48:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:48:03,838 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:48:03,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:03,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:48:03,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027123252] [2024-11-22 21:48:03,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027123252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:48:03,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:48:03,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:48:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739325031] [2024-11-22 21:48:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:48:03,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:48:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:48:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:48:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:48:03,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-11-22 21:48:03,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 212 transitions, 2096 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:48:03,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:48:03,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-11-22 21:48:03,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand