./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-simple-queue.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-simple-queue.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 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:52:02,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:52:02,709 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:52:02,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:52:02,715 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:52:02,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:52:02,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:52:02,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:52:02,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:52:02,745 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:52:02,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:52:02,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:52:02,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:52:02,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:52:02,763 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:52:02,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:52:02,763 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:52:02,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:52:02,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:52:02,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:52:02,764 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:52:02,768 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:52:02,768 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:52:02,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:52:02,769 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:52:02,769 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:52:02,769 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:52:02,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:52:02,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:52:02,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:52:02,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:52:02,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:52:02,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:52:02,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:52:02,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:52:02,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:52:02,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:52:02,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:52:02,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:52:02,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:52:02,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:52:02,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:52:02,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-11-22 21:52:02,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:52:02,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:52:02,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:52:02,998 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:52:02,999 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:52:03,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-22 21:52:04,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:52:04,437 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:52:04,438 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-22 21:52:04,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c125dbe15/d023c54b6bfa4b86ae1f26fb6900fdc8/FLAG967d2a10e [2024-11-22 21:52:04,460 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c125dbe15/d023c54b6bfa4b86ae1f26fb6900fdc8 [2024-11-22 21:52:04,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:52:04,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:52:04,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:52:04,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:52:04,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:52:04,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13376a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04, skipping insertion in model container [2024-11-22 21:52:04,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:52:04,683 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:52:04,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:52:04,694 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:52:04,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:52:04,726 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:52:04,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04 WrapperNode [2024-11-22 21:52:04,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:52:04,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:52:04,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:52:04,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:52:04,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,757 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 127 [2024-11-22 21:52:04,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:52:04,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:52:04,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:52:04,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:52:04,765 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,768 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,778 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-22 21:52:04,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:52:04,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:52:04,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:52:04,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:52:04,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (1/1) ... [2024-11-22 21:52:04,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:52:04,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:04,820 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 21:52:04,827 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 21:52:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:52:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:52:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:52:04,867 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:52:04,867 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:52:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:52:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:52:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:52:04,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:52:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:52:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:52:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 21:52:04,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:52:04,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:52:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:52:04,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:52:04,871 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 21:52:04,959 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:52:04,961 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:52:05,216 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:52:05,217 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:52:05,423 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:52:05,424 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 21:52:05,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:52:05 BoogieIcfgContainer [2024-11-22 21:52:05,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:52:05,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:52:05,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:52:05,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:52:05,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:52:04" (1/3) ... [2024-11-22 21:52:05,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a111947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:52:05, skipping insertion in model container [2024-11-22 21:52:05,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:52:04" (2/3) ... [2024-11-22 21:52:05,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a111947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:52:05, skipping insertion in model container [2024-11-22 21:52:05,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:52:05" (3/3) ... [2024-11-22 21:52:05,432 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2024-11-22 21:52:05,445 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:52:05,445 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-22 21:52:05,445 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:52:05,492 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:52:05,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2024-11-22 21:52:05,540 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-11-22 21:52:05,541 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:52:05,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-22 21:52:05,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2024-11-22 21:52:05,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2024-11-22 21:52:05,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:52:05,557 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;@26cd024c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:52:05,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-22 21:52:05,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:52:05,560 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-22 21:52:05,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:52:05,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:05,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:52:05,561 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:05,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash 406284, now seen corresponding path program 1 times [2024-11-22 21:52:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:05,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158437935] [2024-11-22 21:52:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:05,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:05,824 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 21:52:05,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:05,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158437935] [2024-11-22 21:52:05,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158437935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:52:05,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:52:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:52:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691148665] [2024-11-22 21:52:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:52:05,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:52:05,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:05,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:52:05,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:52:06,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-22 21:52:06,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 21:52:06,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:06,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-22 21:52:06,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:06,123 INFO L124 PetriNetUnfolderBase]: 212/371 cut-off events. [2024-11-22 21:52:06,124 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-22 21:52:06,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 371 events. 212/371 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1444 event pairs, 176 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 705. Up to 364 conditions per place. [2024-11-22 21:52:06,133 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-11-22 21:52:06,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2024-11-22 21:52:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:52:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:52:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-22 21:52:06,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-11-22 21:52:06,147 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 50 transitions. [2024-11-22 21:52:06,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2024-11-22 21:52:06,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:52:06,152 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-11-22 21:52:06,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-11-22 21:52:06,160 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-11-22 21:52:06,160 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-11-22 21:52:06,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 21:52:06,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:06,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:52:06,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:52:06,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:06,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash 406285, now seen corresponding path program 1 times [2024-11-22 21:52:06,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:06,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313983612] [2024-11-22 21:52:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:06,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:06,373 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 21:52:06,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:06,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313983612] [2024-11-22 21:52:06,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313983612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:52:06,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:52:06,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:52:06,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865758617] [2024-11-22 21:52:06,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:52:06,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:52:06,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:06,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:52:06,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:52:06,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-22 21:52:06,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 21:52:06,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:06,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-22 21:52:06,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:06,521 INFO L124 PetriNetUnfolderBase]: 213/374 cut-off events. [2024-11-22 21:52:06,522 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 21:52:06,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 374 events. 213/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1462 event pairs, 176 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 737. Up to 369 conditions per place. [2024-11-22 21:52:06,525 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-22 21:52:06,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 132 flow [2024-11-22 21:52:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:52:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:52:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-22 21:52:06,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-11-22 21:52:06,529 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 58 transitions. [2024-11-22 21:52:06,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 132 flow [2024-11-22 21:52:06,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:52:06,535 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-11-22 21:52:06,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-11-22 21:52:06,536 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-22 21:52:06,536 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-11-22 21:52:06,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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 21:52:06,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:06,537 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-22 21:52:06,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:52:06,537 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:06,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash 390452160, now seen corresponding path program 1 times [2024-11-22 21:52:06,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:06,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922389915] [2024-11-22 21:52:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:06,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:06,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922389915] [2024-11-22 21:52:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922389915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366241377] [2024-11-22 21:52:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:06,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:06,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:06,744 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 21:52:06,746 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 21:52:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:06,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:52:06,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:06,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-22 21:52:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:07,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:07,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366241377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:07,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:07,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-22 21:52:07,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110532992] [2024-11-22 21:52:07,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:07,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:52:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:52:07,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:52:07,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-22 21:52:07,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 21:52:07,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:07,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-22 21:52:07,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:07,290 INFO L124 PetriNetUnfolderBase]: 214/376 cut-off events. [2024-11-22 21:52:07,291 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-22 21:52:07,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 376 events. 214/376 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1464 event pairs, 176 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 744. Up to 366 conditions per place. [2024-11-22 21:52:07,294 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 21 selfloop transitions, 10 changer transitions 0/34 dead transitions. [2024-11-22 21:52:07,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 159 flow [2024-11-22 21:52:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:52:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:52:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-22 21:52:07,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30067567567567566 [2024-11-22 21:52:07,299 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 8 states and 89 transitions. [2024-11-22 21:52:07,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 159 flow [2024-11-22 21:52:07,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:52:07,302 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 114 flow [2024-11-22 21:52:07,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-22 21:52:07,303 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-22 21:52:07,304 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 114 flow [2024-11-22 21:52:07,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 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 21:52:07,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:07,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:07,320 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 21:52:07,509 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 21:52:07,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:07,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1619625390, now seen corresponding path program 1 times [2024-11-22 21:52:07,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:07,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964106762] [2024-11-22 21:52:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:07,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:07,585 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 21:52:07,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:07,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964106762] [2024-11-22 21:52:07,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964106762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:52:07,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:52:07,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:52:07,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053230600] [2024-11-22 21:52:07,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:52:07,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:52:07,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:07,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:52:07,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:52:07,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-22 21:52:07,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:52:07,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:07,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-22 21:52:07,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:07,649 INFO L124 PetriNetUnfolderBase]: 166/295 cut-off events. [2024-11-22 21:52:07,650 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-22 21:52:07,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 295 events. 166/295 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1072 event pairs, 132 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 582. Up to 284 conditions per place. [2024-11-22 21:52:07,653 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-22 21:52:07,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 168 flow [2024-11-22 21:52:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:52:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:52:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-11-22 21:52:07,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-11-22 21:52:07,656 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 114 flow. Second operand 4 states and 53 transitions. [2024-11-22 21:52:07,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 168 flow [2024-11-22 21:52:07,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 126 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-22 21:52:07,657 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 76 flow [2024-11-22 21:52:07,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2024-11-22 21:52:07,657 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-11-22 21:52:07,658 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 76 flow [2024-11-22 21:52:07,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:52:07,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:07,658 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:07,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:52:07,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:07,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1619625391, now seen corresponding path program 1 times [2024-11-22 21:52:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977431649] [2024-11-22 21:52:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:07,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:07,728 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 21:52:07,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977431649] [2024-11-22 21:52:07,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977431649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:52:07,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:52:07,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:52:07,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959663344] [2024-11-22 21:52:07,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:52:07,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:52:07,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:52:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:52:07,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:07,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:52:07,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:07,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:07,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:07,858 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-11-22 21:52:07,859 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-22 21:52:07,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 434 events. 233/434 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1802 event pairs, 200 based on Foata normal form. 23/371 useless extension candidates. Maximal degree in co-relation 574. Up to 289 conditions per place. [2024-11-22 21:52:07,861 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-11-22 21:52:07,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 198 flow [2024-11-22 21:52:07,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:52:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:52:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-22 21:52:07,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-11-22 21:52:07,862 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 76 flow. Second operand 4 states and 77 transitions. [2024-11-22 21:52:07,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 198 flow [2024-11-22 21:52:07,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:52:07,867 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 86 flow [2024-11-22 21:52:07,867 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-11-22 21:52:07,868 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-22 21:52:07,868 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 86 flow [2024-11-22 21:52:07,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:52:07,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:07,868 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:07,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:52:07,869 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:07,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1730964254, now seen corresponding path program 1 times [2024-11-22 21:52:07,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:07,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127738465] [2024-11-22 21:52:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:07,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:08,053 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 21:52:08,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127738465] [2024-11-22 21:52:08,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127738465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:52:08,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:52:08,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:52:08,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881723122] [2024-11-22 21:52:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:52:08,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:52:08,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:52:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:52:08,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:08,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 21:52:08,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:08,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:08,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:08,126 INFO L124 PetriNetUnfolderBase]: 191/363 cut-off events. [2024-11-22 21:52:08,127 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 21:52:08,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 363 events. 191/363 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1467 event pairs, 162 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 472. Up to 348 conditions per place. [2024-11-22 21:52:08,129 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 23 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-22 21:52:08,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 132 flow [2024-11-22 21:52:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:52:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:52:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-22 21:52:08,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3716216216216216 [2024-11-22 21:52:08,130 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 86 flow. Second operand 4 states and 55 transitions. [2024-11-22 21:52:08,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 132 flow [2024-11-22 21:52:08,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:52:08,132 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 81 flow [2024-11-22 21:52:08,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-11-22 21:52:08,133 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-22 21:52:08,133 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 81 flow [2024-11-22 21:52:08,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 21:52:08,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:08,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:08,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:52:08,135 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:08,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash 861308056, now seen corresponding path program 1 times [2024-11-22 21:52:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433753916] [2024-11-22 21:52:08,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:08,161 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 21:52:08,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:08,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433753916] [2024-11-22 21:52:08,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433753916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:52:08,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:52:08,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:52:08,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187716308] [2024-11-22 21:52:08,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:52:08,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:52:08,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:52:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:52:08,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:08,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 21:52:08,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:08,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:08,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:08,226 INFO L124 PetriNetUnfolderBase]: 272/497 cut-off events. [2024-11-22 21:52:08,226 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-22 21:52:08,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 497 events. 272/497 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2045 event pairs, 150 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 751. Up to 315 conditions per place. [2024-11-22 21:52:08,228 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 34 selfloop transitions, 2 changer transitions 4/43 dead transitions. [2024-11-22 21:52:08,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 193 flow [2024-11-22 21:52:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:52:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:52:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-22 21:52:08,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-11-22 21:52:08,231 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 81 flow. Second operand 3 states and 59 transitions. [2024-11-22 21:52:08,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 193 flow [2024-11-22 21:52:08,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:52:08,232 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2024-11-22 21:52:08,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-22 21:52:08,233 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-22 21:52:08,233 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2024-11-22 21:52:08,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 21:52:08,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:08,233 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:08,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:52:08,233 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:08,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2034642354, now seen corresponding path program 1 times [2024-11-22 21:52:08,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:08,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603746539] [2024-11-22 21:52:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:08,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:52:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:08,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603746539] [2024-11-22 21:52:08,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603746539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:52:08,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:52:08,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:52:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673402458] [2024-11-22 21:52:08,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:52:08,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:52:08,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:08,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:52:08,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:52:08,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:08,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 21:52:08,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:08,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:08,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:08,363 INFO L124 PetriNetUnfolderBase]: 252/452 cut-off events. [2024-11-22 21:52:08,363 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-22 21:52:08,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 452 events. 252/452 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1685 event pairs, 113 based on Foata normal form. 11/392 useless extension candidates. Maximal degree in co-relation 983. Up to 306 conditions per place. [2024-11-22 21:52:08,365 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 33 selfloop transitions, 2 changer transitions 6/44 dead transitions. [2024-11-22 21:52:08,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 199 flow [2024-11-22 21:52:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:52:08,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:52:08,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-22 21:52:08,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-11-22 21:52:08,366 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 3 states and 60 transitions. [2024-11-22 21:52:08,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 199 flow [2024-11-22 21:52:08,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:52:08,367 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 96 flow [2024-11-22 21:52:08,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-11-22 21:52:08,368 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-11-22 21:52:08,368 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 96 flow [2024-11-22 21:52:08,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 21:52:08,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:08,370 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 21:52:08,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:52:08,370 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:08,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash -400558460, now seen corresponding path program 1 times [2024-11-22 21:52:08,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:08,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269528110] [2024-11-22 21:52:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:08,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:08,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269528110] [2024-11-22 21:52:08,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269528110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:08,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287788020] [2024-11-22 21:52:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:52:08,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:08,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:08,714 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 21:52:08,715 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 21:52:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:08,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 21:52:08,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:08,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 21:52:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:08,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:09,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-22 21:52:09,268 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 21:52:09,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2024-11-22 21:52:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:09,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287788020] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:09,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:09,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-22 21:52:09,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918369032] [2024-11-22 21:52:09,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:09,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 21:52:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:09,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 21:52:09,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-22 21:52:09,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:09,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 96 flow. Second operand has 16 states, 16 states have (on average 11.5625) internal successors, (185), 16 states have internal predecessors, (185), 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 21:52:09,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:09,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:09,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:09,977 INFO L124 PetriNetUnfolderBase]: 911/1624 cut-off events. [2024-11-22 21:52:09,978 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-11-22 21:52:09,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 1624 events. 911/1624 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8320 event pairs, 351 based on Foata normal form. 3/1376 useless extension candidates. Maximal degree in co-relation 2339. Up to 440 conditions per place. [2024-11-22 21:52:09,983 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 90 selfloop transitions, 18 changer transitions 39/150 dead transitions. [2024-11-22 21:52:09,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 150 transitions, 715 flow [2024-11-22 21:52:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:52:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 21:52:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2024-11-22 21:52:09,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-11-22 21:52:09,985 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 96 flow. Second operand 14 states and 260 transitions. [2024-11-22 21:52:09,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 150 transitions, 715 flow [2024-11-22 21:52:09,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 150 transitions, 702 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-22 21:52:09,988 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 214 flow [2024-11-22 21:52:09,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-22 21:52:09,992 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-22 21:52:09,992 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 214 flow [2024-11-22 21:52:09,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5625) internal successors, (185), 16 states have internal predecessors, (185), 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 21:52:09,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:09,993 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:10,002 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 21:52:10,193 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,SelfDestructingSolverStorable8 [2024-11-22 21:52:10,194 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:10,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:10,198 INFO L85 PathProgramCache]: Analyzing trace with hash 32256458, now seen corresponding path program 2 times [2024-11-22 21:52:10,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345845240] [2024-11-22 21:52:10,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:52:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:10,216 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:52:10,216 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 21:52:10,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:10,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345845240] [2024-11-22 21:52:10,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345845240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:10,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783431048] [2024-11-22 21:52:10,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:52:10,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:10,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:10,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:10,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:52:10,313 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:52:10,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:10,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:52:10,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 21:52:10,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:52:10,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783431048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:10,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:10,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 6 [2024-11-22 21:52:10,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63213001] [2024-11-22 21:52:10,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:10,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:52:10,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:52:10,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:52:10,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:10,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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 21:52:10,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:10,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:10,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:10,746 INFO L124 PetriNetUnfolderBase]: 1628/2879 cut-off events. [2024-11-22 21:52:10,746 INFO L125 PetriNetUnfolderBase]: For 2371/2371 co-relation queries the response was YES. [2024-11-22 21:52:10,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7071 conditions, 2879 events. 1628/2879 cut-off events. For 2371/2371 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 16089 event pairs, 590 based on Foata normal form. 33/2464 useless extension candidates. Maximal degree in co-relation 6030. Up to 1080 conditions per place. [2024-11-22 21:52:10,756 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 62 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-11-22 21:52:10,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 532 flow [2024-11-22 21:52:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:52:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:52:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-22 21:52:10,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2024-11-22 21:52:10,757 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 214 flow. Second operand 4 states and 85 transitions. [2024-11-22 21:52:10,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 532 flow [2024-11-22 21:52:10,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 512 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-22 21:52:10,761 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 356 flow [2024-11-22 21:52:10,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-22 21:52:10,762 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-11-22 21:52:10,762 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 356 flow [2024-11-22 21:52:10,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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 21:52:10,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:10,763 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:10,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:52:10,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:10,964 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:10,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1143417749, now seen corresponding path program 3 times [2024-11-22 21:52:10,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:10,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25752144] [2024-11-22 21:52:10,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:52:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:10,983 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:52:10,983 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 21:52:11,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25752144] [2024-11-22 21:52:11,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25752144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:11,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510356065] [2024-11-22 21:52:11,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:52:11,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:11,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:11,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:11,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:52:11,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:52:11,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:11,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:52:11,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 21:52:11,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:11,128 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 21:52:11,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-22 21:52:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 21:52:11,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510356065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:11,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:11,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-22 21:52:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367917898] [2024-11-22 21:52:11,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:11,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:52:11,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:52:11,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:52:11,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:11,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 356 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 21:52:11,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:11,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:11,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:11,445 INFO L124 PetriNetUnfolderBase]: 2246/3945 cut-off events. [2024-11-22 21:52:11,445 INFO L125 PetriNetUnfolderBase]: For 5685/5685 co-relation queries the response was YES. [2024-11-22 21:52:11,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 3945 events. 2246/3945 cut-off events. For 5685/5685 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 22979 event pairs, 580 based on Foata normal form. 3/3331 useless extension candidates. Maximal degree in co-relation 7321. Up to 1316 conditions per place. [2024-11-22 21:52:11,457 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 65 selfloop transitions, 17 changer transitions 12/97 dead transitions. [2024-11-22 21:52:11,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 97 transitions, 747 flow [2024-11-22 21:52:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:52:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:52:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-11-22 21:52:11,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5513513513513514 [2024-11-22 21:52:11,459 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 356 flow. Second operand 5 states and 102 transitions. [2024-11-22 21:52:11,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 97 transitions, 747 flow [2024-11-22 21:52:11,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 97 transitions, 707 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-11-22 21:52:11,468 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 446 flow [2024-11-22 21:52:11,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-11-22 21:52:11,468 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2024-11-22 21:52:11,468 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 446 flow [2024-11-22 21:52:11,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 21:52:11,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:11,469 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:11,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 21:52:11,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:11,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:11,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1691989562, now seen corresponding path program 4 times [2024-11-22 21:52:11,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102371677] [2024-11-22 21:52:11,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:52:11,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:11,687 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:52:11,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:52:11,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:11,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102371677] [2024-11-22 21:52:11,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102371677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:11,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312893751] [2024-11-22 21:52:11,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:52:11,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:11,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:11,809 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:11,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:52:11,870 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:52:11,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:11,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 21:52:11,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:11,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 21:52:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:12,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:12,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-22 21:52:12,321 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 21:52:12,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2024-11-22 21:52:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:12,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312893751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:12,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:12,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2024-11-22 21:52:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883494565] [2024-11-22 21:52:12,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:12,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 21:52:12,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 21:52:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2024-11-22 21:52:12,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:12,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 446 flow. Second operand has 21 states, 21 states have (on average 11.857142857142858) internal successors, (249), 21 states have internal predecessors, (249), 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 21:52:12,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:12,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:12,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:14,261 INFO L124 PetriNetUnfolderBase]: 8201/14162 cut-off events. [2024-11-22 21:52:14,262 INFO L125 PetriNetUnfolderBase]: For 28221/28221 co-relation queries the response was YES. [2024-11-22 21:52:14,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38780 conditions, 14162 events. 8201/14162 cut-off events. For 28221/28221 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 98652 event pairs, 1219 based on Foata normal form. 53/12026 useless extension candidates. Maximal degree in co-relation 23451. Up to 2550 conditions per place. [2024-11-22 21:52:14,307 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 181 selfloop transitions, 117 changer transitions 102/403 dead transitions. [2024-11-22 21:52:14,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 403 transitions, 3094 flow [2024-11-22 21:52:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 21:52:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-22 21:52:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 555 transitions. [2024-11-22 21:52:14,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-22 21:52:14,309 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 446 flow. Second operand 27 states and 555 transitions. [2024-11-22 21:52:14,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 403 transitions, 3094 flow [2024-11-22 21:52:14,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 403 transitions, 2987 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-11-22 21:52:14,330 INFO L231 Difference]: Finished difference. Result has 100 places, 152 transitions, 2118 flow [2024-11-22 21:52:14,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2118, PETRI_PLACES=100, PETRI_TRANSITIONS=152} [2024-11-22 21:52:14,330 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2024-11-22 21:52:14,331 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 152 transitions, 2118 flow [2024-11-22 21:52:14,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.857142857142858) internal successors, (249), 21 states have internal predecessors, (249), 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 21:52:14,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:14,331 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:14,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:52:14,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 21:52:14,532 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:14,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash 150783231, now seen corresponding path program 5 times [2024-11-22 21:52:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:14,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127528622] [2024-11-22 21:52:14,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:52:14,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:14,551 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 21:52:14,551 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 21:52:14,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:14,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127528622] [2024-11-22 21:52:14,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127528622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:14,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763772683] [2024-11-22 21:52:14,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:52:14,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:14,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:14,750 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:14,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:52:14,816 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-22 21:52:14,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:14,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:52:14,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 21:52:14,916 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 21:52:15,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763772683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:15,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:15,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-22 21:52:15,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121844771] [2024-11-22 21:52:15,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:15,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:52:15,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:52:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:52:15,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:15,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 152 transitions, 2118 flow. Second operand has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 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 21:52:15,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:15,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:15,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:15,831 INFO L124 PetriNetUnfolderBase]: 4797/8442 cut-off events. [2024-11-22 21:52:15,831 INFO L125 PetriNetUnfolderBase]: For 24410/24410 co-relation queries the response was YES. [2024-11-22 21:52:15,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23957 conditions, 8442 events. 4797/8442 cut-off events. For 24410/24410 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 55854 event pairs, 3702 based on Foata normal form. 104/7223 useless extension candidates. Maximal degree in co-relation 23898. Up to 6306 conditions per place. [2024-11-22 21:52:15,867 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 78 selfloop transitions, 10 changer transitions 55/146 dead transitions. [2024-11-22 21:52:15,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 146 transitions, 1710 flow [2024-11-22 21:52:15,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:52:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:52:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-11-22 21:52:15,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-11-22 21:52:15,869 INFO L175 Difference]: Start difference. First operand has 100 places, 152 transitions, 2118 flow. Second operand 9 states and 146 transitions. [2024-11-22 21:52:15,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 146 transitions, 1710 flow [2024-11-22 21:52:15,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 146 transitions, 1310 flow, removed 183 selfloop flow, removed 10 redundant places. [2024-11-22 21:52:15,949 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 792 flow [2024-11-22 21:52:15,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=792, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2024-11-22 21:52:15,950 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2024-11-22 21:52:15,950 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 792 flow [2024-11-22 21:52:15,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.222222222222221) internal successors, (202), 18 states have internal predecessors, (202), 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 21:52:15,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:15,951 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:15,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 21:52:16,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:16,156 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:16,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:16,157 INFO L85 PathProgramCache]: Analyzing trace with hash 602004550, now seen corresponding path program 6 times [2024-11-22 21:52:16,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:16,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186451980] [2024-11-22 21:52:16,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:52:16,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:16,191 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 21:52:16,191 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 21:52:16,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:16,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186451980] [2024-11-22 21:52:16,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186451980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:16,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592355130] [2024-11-22 21:52:16,563 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:52:16,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:16,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:16,566 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:16,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:52:16,758 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 21:52:16,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:16,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-22 21:52:16,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:16,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 21:52:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:17,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:17,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-22 21:52:17,438 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 21:52:17,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2024-11-22 21:52:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:17,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592355130] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:17,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:17,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 30 [2024-11-22 21:52:17,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685410945] [2024-11-22 21:52:17,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:17,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-22 21:52:17,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:17,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-22 21:52:17,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=766, Unknown=0, NotChecked=0, Total=930 [2024-11-22 21:52:17,619 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:17,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 792 flow. Second operand has 31 states, 31 states have (on average 11.290322580645162) internal successors, (350), 31 states have internal predecessors, (350), 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 21:52:17,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:17,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:17,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:20,108 INFO L124 PetriNetUnfolderBase]: 7004/12101 cut-off events. [2024-11-22 21:52:20,109 INFO L125 PetriNetUnfolderBase]: For 13721/13721 co-relation queries the response was YES. [2024-11-22 21:52:20,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30290 conditions, 12101 events. 7004/12101 cut-off events. For 13721/13721 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 80175 event pairs, 1874 based on Foata normal form. 22/10258 useless extension candidates. Maximal degree in co-relation 30223. Up to 3457 conditions per place. [2024-11-22 21:52:20,144 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 139 selfloop transitions, 36 changer transitions 256/434 dead transitions. [2024-11-22 21:52:20,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 434 transitions, 2993 flow [2024-11-22 21:52:20,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-22 21:52:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-22 21:52:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 592 transitions. [2024-11-22 21:52:20,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-22 21:52:20,147 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 792 flow. Second operand 31 states and 592 transitions. [2024-11-22 21:52:20,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 434 transitions, 2993 flow [2024-11-22 21:52:20,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 434 transitions, 2929 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-22 21:52:20,200 INFO L231 Difference]: Finished difference. Result has 125 places, 99 transitions, 1049 flow [2024-11-22 21:52:20,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1049, PETRI_PLACES=125, PETRI_TRANSITIONS=99} [2024-11-22 21:52:20,201 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 89 predicate places. [2024-11-22 21:52:20,201 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 99 transitions, 1049 flow [2024-11-22 21:52:20,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.290322580645162) internal successors, (350), 31 states have internal predecessors, (350), 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 21:52:20,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:20,202 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:20,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 21:52:20,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:20,403 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:20,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:20,403 INFO L85 PathProgramCache]: Analyzing trace with hash -612301034, now seen corresponding path program 7 times [2024-11-22 21:52:20,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:20,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368008438] [2024-11-22 21:52:20,404 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:52:20,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:52:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368008438] [2024-11-22 21:52:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368008438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:21,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993597693] [2024-11-22 21:52:21,989 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:52:21,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:21,993 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:21,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:52:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:52:22,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 21:52:22,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:52:22,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:22,275 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-22 21:52:22,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2024-11-22 21:52:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-22 21:52:22,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993597693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:22,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:22,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 6] total 23 [2024-11-22 21:52:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979621132] [2024-11-22 21:52:22,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:22,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 21:52:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 21:52:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-22 21:52:22,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:22,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 99 transitions, 1049 flow. Second operand has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 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 21:52:22,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:22,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:22,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:23,682 INFO L124 PetriNetUnfolderBase]: 5277/9126 cut-off events. [2024-11-22 21:52:23,682 INFO L125 PetriNetUnfolderBase]: For 17450/17450 co-relation queries the response was YES. [2024-11-22 21:52:23,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24886 conditions, 9126 events. 5277/9126 cut-off events. For 17450/17450 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 58240 event pairs, 1168 based on Foata normal form. 2/7723 useless extension candidates. Maximal degree in co-relation 24619. Up to 1869 conditions per place. [2024-11-22 21:52:23,716 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 154 selfloop transitions, 66 changer transitions 39/262 dead transitions. [2024-11-22 21:52:23,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 262 transitions, 2376 flow [2024-11-22 21:52:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 21:52:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 21:52:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 309 transitions. [2024-11-22 21:52:23,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-11-22 21:52:23,719 INFO L175 Difference]: Start difference. First operand has 125 places, 99 transitions, 1049 flow. Second operand 18 states and 309 transitions. [2024-11-22 21:52:23,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 262 transitions, 2376 flow [2024-11-22 21:52:23,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 262 transitions, 2118 flow, removed 116 selfloop flow, removed 12 redundant places. [2024-11-22 21:52:23,800 INFO L231 Difference]: Finished difference. Result has 117 places, 120 transitions, 1342 flow [2024-11-22 21:52:23,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1342, PETRI_PLACES=117, PETRI_TRANSITIONS=120} [2024-11-22 21:52:23,801 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2024-11-22 21:52:23,801 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 120 transitions, 1342 flow [2024-11-22 21:52:23,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.291666666666666) internal successors, (271), 24 states have internal predecessors, (271), 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 21:52:23,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:23,801 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:23,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 21:52:24,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 21:52:24,006 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:24,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash 567400016, now seen corresponding path program 8 times [2024-11-22 21:52:24,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:24,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031722873] [2024-11-22 21:52:24,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:52:24,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:24,020 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:52:24,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 21:52:24,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:24,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031722873] [2024-11-22 21:52:24,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031722873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:24,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362432849] [2024-11-22 21:52:24,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:52:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:24,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:24,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:24,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 21:52:24,172 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:52:24,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:24,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 21:52:24,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 21:52:24,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 21:52:24,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362432849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:24,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:24,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 12 [2024-11-22 21:52:24,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113203485] [2024-11-22 21:52:24,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:24,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:52:24,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:24,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:52:24,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:52:24,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:24,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 120 transitions, 1342 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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 21:52:24,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:24,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:24,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:25,618 INFO L124 PetriNetUnfolderBase]: 9135/15720 cut-off events. [2024-11-22 21:52:25,618 INFO L125 PetriNetUnfolderBase]: For 28696/28696 co-relation queries the response was YES. [2024-11-22 21:52:25,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42109 conditions, 15720 events. 9135/15720 cut-off events. For 28696/28696 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 108804 event pairs, 2047 based on Foata normal form. 22/13317 useless extension candidates. Maximal degree in co-relation 37335. Up to 3886 conditions per place. [2024-11-22 21:52:25,697 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 122 selfloop transitions, 108 changer transitions 0/233 dead transitions. [2024-11-22 21:52:25,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 233 transitions, 2752 flow [2024-11-22 21:52:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:52:25,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:52:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-22 21:52:25,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5990990990990991 [2024-11-22 21:52:25,698 INFO L175 Difference]: Start difference. First operand has 117 places, 120 transitions, 1342 flow. Second operand 6 states and 133 transitions. [2024-11-22 21:52:25,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 233 transitions, 2752 flow [2024-11-22 21:52:25,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 233 transitions, 2493 flow, removed 103 selfloop flow, removed 16 redundant places. [2024-11-22 21:52:25,780 INFO L231 Difference]: Finished difference. Result has 107 places, 177 transitions, 2106 flow [2024-11-22 21:52:25,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2106, PETRI_PLACES=107, PETRI_TRANSITIONS=177} [2024-11-22 21:52:25,781 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 71 predicate places. [2024-11-22 21:52:25,781 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 177 transitions, 2106 flow [2024-11-22 21:52:25,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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 21:52:25,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:25,781 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:25,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 21:52:25,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 21:52:25,982 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:25,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1160019607, now seen corresponding path program 9 times [2024-11-22 21:52:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:25,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362604410] [2024-11-22 21:52:25,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:52:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:26,008 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 21:52:26,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:52:26,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362604410] [2024-11-22 21:52:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362604410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008242613] [2024-11-22 21:52:26,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:52:26,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:26,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:26,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 21:52:26,528 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-22 21:52:26,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:26,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 21:52:26,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:26,851 INFO L349 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2024-11-22 21:52:26,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2024-11-22 21:52:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:52:26,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:27,027 INFO L349 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2024-11-22 21:52:27,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 20 [2024-11-22 21:52:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:52:27,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008242613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:27,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:27,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2024-11-22 21:52:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196032789] [2024-11-22 21:52:27,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:27,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-22 21:52:27,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-22 21:52:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2024-11-22 21:52:27,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:52:27,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 177 transitions, 2106 flow. Second operand has 31 states, 31 states have (on average 10.806451612903226) internal successors, (335), 31 states have internal predecessors, (335), 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 21:52:27,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:52:27,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:52:27,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:52:34,206 INFO L124 PetriNetUnfolderBase]: 27501/47110 cut-off events. [2024-11-22 21:52:34,206 INFO L125 PetriNetUnfolderBase]: For 75404/75404 co-relation queries the response was YES. [2024-11-22 21:52:34,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126631 conditions, 47110 events. 27501/47110 cut-off events. For 75404/75404 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 379349 event pairs, 4636 based on Foata normal form. 19/39853 useless extension candidates. Maximal degree in co-relation 104984. Up to 8600 conditions per place. [2024-11-22 21:52:34,430 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 338 selfloop transitions, 126 changer transitions 453/920 dead transitions. [2024-11-22 21:52:34,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 920 transitions, 9179 flow [2024-11-22 21:52:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 21:52:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-22 21:52:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 749 transitions. [2024-11-22 21:52:34,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5327169274537695 [2024-11-22 21:52:34,441 INFO L175 Difference]: Start difference. First operand has 107 places, 177 transitions, 2106 flow. Second operand 38 states and 749 transitions. [2024-11-22 21:52:34,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 920 transitions, 9179 flow [2024-11-22 21:52:34,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 920 transitions, 9179 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:52:34,840 INFO L231 Difference]: Finished difference. Result has 168 places, 235 transitions, 3615 flow [2024-11-22 21:52:34,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3615, PETRI_PLACES=168, PETRI_TRANSITIONS=235} [2024-11-22 21:52:34,841 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 132 predicate places. [2024-11-22 21:52:34,841 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 235 transitions, 3615 flow [2024-11-22 21:52:34,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.806451612903226) internal successors, (335), 31 states have internal predecessors, (335), 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 21:52:34,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:52:34,841 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:52:34,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 21:52:35,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 21:52:35,046 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:52:35,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:52:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1165848012, now seen corresponding path program 10 times [2024-11-22 21:52:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:52:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597166918] [2024-11-22 21:52:35,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:52:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:52:35,072 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:52:35,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 21:52:35,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:52:35,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597166918] [2024-11-22 21:52:35,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597166918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:52:35,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797300717] [2024-11-22 21:52:35,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:52:35,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:52:35,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:52:35,206 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:52:35,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 21:52:35,321 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:52:35,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:52:35,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 21:52:35,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:52:35,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:52:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 21:52:35,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:52:59,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-22 21:52:59,662 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 21:52:59,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 73 [2024-11-22 21:52:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 45 refuted. 1 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 21:52:59,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797300717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:52:59,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:52:59,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 10] total 16 [2024-11-22 21:52:59,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177437670] [2024-11-22 21:52:59,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:52:59,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:52:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:52:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:52:59,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=214, Unknown=6, NotChecked=0, Total=272 [2024-11-22 21:53:03,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 21:53:07,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 21:53:07,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2024-11-22 21:53:07,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 235 transitions, 3615 flow. Second operand has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 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 21:53:07,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:53:07,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2024-11-22 21:53:07,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:53:10,912 INFO L124 PetriNetUnfolderBase]: 14483/25076 cut-off events. [2024-11-22 21:53:10,913 INFO L125 PetriNetUnfolderBase]: For 105181/105181 co-relation queries the response was YES. [2024-11-22 21:53:11,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76730 conditions, 25076 events. 14483/25076 cut-off events. For 105181/105181 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 185320 event pairs, 3007 based on Foata normal form. 4/21177 useless extension candidates. Maximal degree in co-relation 76099. Up to 5944 conditions per place. [2024-11-22 21:53:11,077 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 142 selfloop transitions, 158 changer transitions 27/330 dead transitions. [2024-11-22 21:53:11,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 330 transitions, 4921 flow [2024-11-22 21:53:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:53:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 21:53:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-11-22 21:53:11,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2024-11-22 21:53:11,078 INFO L175 Difference]: Start difference. First operand has 168 places, 235 transitions, 3615 flow. Second operand 12 states and 183 transitions. [2024-11-22 21:53:11,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 330 transitions, 4921 flow [2024-11-22 21:53:11,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 330 transitions, 4318 flow, removed 278 selfloop flow, removed 15 redundant places. [2024-11-22 21:53:11,849 INFO L231 Difference]: Finished difference. Result has 155 places, 249 transitions, 3796 flow [2024-11-22 21:53:11,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3162, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3796, PETRI_PLACES=155, PETRI_TRANSITIONS=249} [2024-11-22 21:53:11,850 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 119 predicate places. [2024-11-22 21:53:11,850 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 249 transitions, 3796 flow [2024-11-22 21:53:11,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.0) internal successors, (170), 17 states have internal predecessors, (170), 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 21:53:11,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:53:11,850 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:53:11,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 21:53:12,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 21:53:12,051 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:53:12,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:53:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1692605516, now seen corresponding path program 11 times [2024-11-22 21:53:12,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:53:12,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790652346] [2024-11-22 21:53:12,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:53:12,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:53:12,080 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-22 21:53:12,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:53:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:53:12,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:53:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790652346] [2024-11-22 21:53:12,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790652346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:53:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764161697] [2024-11-22 21:53:12,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:53:12,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:53:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:53:12,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:53:12,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 21:53:12,659 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-22 21:53:12,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:53:12,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 21:53:12,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:53:13,220 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 21:53:13,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-22 21:53:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:53:13,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:53:13,300 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-22 21:53:13,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2024-11-22 21:53:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:53:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764161697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:53:13,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:53:13,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 38 [2024-11-22 21:53:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111411269] [2024-11-22 21:53:13,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:53:13,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-22 21:53:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:53:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-22 21:53:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 21:53:14,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-22 21:53:14,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 249 transitions, 3796 flow. Second operand has 39 states, 39 states have (on average 11.128205128205128) internal successors, (434), 39 states have internal predecessors, (434), 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 21:53:14,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:53:14,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-22 21:53:14,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:53:21,765 INFO L124 PetriNetUnfolderBase]: 19312/33735 cut-off events. [2024-11-22 21:53:21,765 INFO L125 PetriNetUnfolderBase]: For 107492/107492 co-relation queries the response was YES. [2024-11-22 21:53:21,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96107 conditions, 33735 events. 19312/33735 cut-off events. For 107492/107492 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 251678 event pairs, 6446 based on Foata normal form. 94/28527 useless extension candidates. Maximal degree in co-relation 85354. Up to 16153 conditions per place. [2024-11-22 21:53:21,978 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 700 selfloop transitions, 131 changer transitions 119/953 dead transitions. [2024-11-22 21:53:21,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 953 transitions, 9309 flow [2024-11-22 21:53:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-22 21:53:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-11-22 21:53:21,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 1206 transitions. [2024-11-22 21:53:21,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5524507558405863 [2024-11-22 21:53:21,981 INFO L175 Difference]: Start difference. First operand has 155 places, 249 transitions, 3796 flow. Second operand 59 states and 1206 transitions. [2024-11-22 21:53:21,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 953 transitions, 9309 flow [2024-11-22 21:53:22,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 953 transitions, 9003 flow, removed 94 selfloop flow, removed 9 redundant places. [2024-11-22 21:53:22,529 INFO L231 Difference]: Finished difference. Result has 224 places, 311 transitions, 4811 flow [2024-11-22 21:53:22,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=4811, PETRI_PLACES=224, PETRI_TRANSITIONS=311} [2024-11-22 21:53:22,530 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 188 predicate places. [2024-11-22 21:53:22,530 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 311 transitions, 4811 flow [2024-11-22 21:53:22,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.128205128205128) internal successors, (434), 39 states have internal predecessors, (434), 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 21:53:22,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:53:22,531 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:53:22,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 21:53:22,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:53:22,731 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:53:22,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:53:22,732 INFO L85 PathProgramCache]: Analyzing trace with hash -694059896, now seen corresponding path program 12 times [2024-11-22 21:53:22,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:53:22,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122410392] [2024-11-22 21:53:22,732 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:53:22,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:53:22,765 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-22 21:53:22,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:53:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:53:23,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:53:23,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122410392] [2024-11-22 21:53:23,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122410392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:53:23,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778300357] [2024-11-22 21:53:23,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:53:23,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:53:23,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:53:23,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:53:23,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 21:53:23,794 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-22 21:53:23,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:53:23,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 21:53:23,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:53:23,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-22 21:53:24,479 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 21:53:24,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 21:53:24,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2024-11-22 21:53:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:53:24,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:53:25,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2024-11-22 21:53:25,405 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-22 21:53:25,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2024-11-22 21:53:25,748 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:53:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778300357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:53:25,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:53:25,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 42 [2024-11-22 21:53:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133382013] [2024-11-22 21:53:25,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:53:25,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-22 21:53:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:53:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-22 21:53:25,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1553, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 21:53:25,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-22 21:53:25,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 311 transitions, 4811 flow. Second operand has 43 states, 43 states have (on average 10.046511627906977) internal successors, (432), 43 states have internal predecessors, (432), 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 21:53:25,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:53:25,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-22 21:53:25,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:53:34,399 INFO L124 PetriNetUnfolderBase]: 19417/33862 cut-off events. [2024-11-22 21:53:34,400 INFO L125 PetriNetUnfolderBase]: For 129475/129475 co-relation queries the response was YES. [2024-11-22 21:53:34,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96903 conditions, 33862 events. 19417/33862 cut-off events. For 129475/129475 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 254919 event pairs, 8376 based on Foata normal form. 68/28584 useless extension candidates. Maximal degree in co-relation 96275. Up to 16153 conditions per place. [2024-11-22 21:53:34,662 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 271 selfloop transitions, 44 changer transitions 303/621 dead transitions. [2024-11-22 21:53:34,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 621 transitions, 7180 flow [2024-11-22 21:53:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 21:53:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-22 21:53:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 574 transitions. [2024-11-22 21:53:34,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4847972972972973 [2024-11-22 21:53:34,664 INFO L175 Difference]: Start difference. First operand has 224 places, 311 transitions, 4811 flow. Second operand 32 states and 574 transitions. [2024-11-22 21:53:34,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 621 transitions, 7180 flow [2024-11-22 21:53:35,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 621 transitions, 6580 flow, removed 277 selfloop flow, removed 12 redundant places. [2024-11-22 21:53:35,149 INFO L231 Difference]: Finished difference. Result has 246 places, 229 transitions, 3470 flow [2024-11-22 21:53:35,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3470, PETRI_PLACES=246, PETRI_TRANSITIONS=229} [2024-11-22 21:53:35,150 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 210 predicate places. [2024-11-22 21:53:35,150 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 229 transitions, 3470 flow [2024-11-22 21:53:35,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 10.046511627906977) internal successors, (432), 43 states have internal predecessors, (432), 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 21:53:35,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:53:35,151 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:53:35,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 21:53:35,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-22 21:53:35,354 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-22 21:53:35,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:53:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1423047038, now seen corresponding path program 13 times [2024-11-22 21:53:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:53:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717396560] [2024-11-22 21:53:35,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:53:35,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:53:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:53:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:53:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:53:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717396560] [2024-11-22 21:53:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717396560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:53:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315444402] [2024-11-22 21:53:35,997 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:53:35,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:53:35,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:53:35,999 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:53:36,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 21:53:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:53:36,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 21:53:36,077 INFO L278 TraceCheckSpWp]: Computing forward predicates...