./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:09:00,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:09:00,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:09:00,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:09:00,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:09:00,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:09:00,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:09:00,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:09:00,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:09:00,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:09:00,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:09:00,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:09:00,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:09:00,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:09:00,689 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:09:00,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:09:00,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:09:00,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:09:00,690 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:09:00,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:09:00,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:09:00,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:09:00,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:09:00,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:09:00,692 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:09:00,692 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:09:00,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:09:00,693 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:09:00,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:09:00,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:09:00,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:09:00,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:09:00,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:09:00,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:09:00,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:09:00,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:09:00,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:09:00,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:09:00,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:09:00,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:09:00,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:09:00,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:09:00,697 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2024-10-11 14:09:00,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:09:00,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:09:00,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:09:00,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:09:00,984 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:09:00,985 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-10-11 14:09:02,412 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:09:02,677 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:09:02,678 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-10-11 14:09:02,704 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/49bc2dec5/449e1918d71a4119833f7bf01d99be89/FLAGfac4e88d3 [2024-10-11 14:09:02,726 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/49bc2dec5/449e1918d71a4119833f7bf01d99be89 [2024-10-11 14:09:02,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:09:02,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:09:02,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:09:02,738 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:09:02,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:09:02,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:09:02" (1/1) ... [2024-10-11 14:09:02,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30187751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:02, skipping insertion in model container [2024-10-11 14:09:02,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:09:02" (1/1) ... [2024-10-11 14:09:02,794 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:09:03,237 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2024-10-11 14:09:03,246 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2024-10-11 14:09:03,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:09:03,267 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:09:03,321 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2024-10-11 14:09:03,324 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2024-10-11 14:09:03,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:09:03,390 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:09:03,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03 WrapperNode [2024-10-11 14:09:03,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:09:03,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:09:03,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:09:03,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:09:03,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,545 INFO L138 Inliner]: procedures = 274, calls = 49, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 196 [2024-10-11 14:09:03,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:09:03,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:09:03,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:09:03,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:09:03,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,564 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,600 INFO L175 MemorySlicer]: Split 34 memory accesses to 4 slices as follows [2, 5, 24, 3]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 13 writes are split as follows [0, 0, 11, 2]. [2024-10-11 14:09:03,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:09:03,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:09:03,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:09:03,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:09:03,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (1/1) ... [2024-10-11 14:09:03,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:09:03,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:03,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:09:03,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:09:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 14:09:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 14:09:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 14:09:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 14:09:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 14:09:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:09:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:09:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 14:09:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 14:09:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:09:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:09:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 14:09:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 14:09:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 14:09:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:09:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:09:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:09:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 14:09:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 14:09:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:09:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:09:03,703 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:09:03,862 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:09:03,864 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:09:04,166 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:09:04,166 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:09:04,390 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:09:04,390 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 14:09:04,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:09:04 BoogieIcfgContainer [2024-10-11 14:09:04,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:09:04,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:09:04,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:09:04,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:09:04,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:09:02" (1/3) ... [2024-10-11 14:09:04,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e80d305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:09:04, skipping insertion in model container [2024-10-11 14:09:04,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:03" (2/3) ... [2024-10-11 14:09:04,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e80d305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:09:04, skipping insertion in model container [2024-10-11 14:09:04,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:09:04" (3/3) ... [2024-10-11 14:09:04,400 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2024-10-11 14:09:04,417 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:09:04,418 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 14:09:04,418 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:09:04,479 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:09:04,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 40 transitions, 94 flow [2024-10-11 14:09:04,558 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2024-10-11 14:09:04,562 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:09:04,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 7/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2024-10-11 14:09:04,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 40 transitions, 94 flow [2024-10-11 14:09:04,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 36 transitions, 81 flow [2024-10-11 14:09:04,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:09:04,589 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=LoopHeads, 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;@19791b65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:09:04,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 14:09:04,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:09:04,594 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 14:09:04,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:09:04,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:04,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 14:09:04,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:04,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:04,602 INFO L85 PathProgramCache]: Analyzing trace with hash 528975, now seen corresponding path program 1 times [2024-10-11 14:09:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412636695] [2024-10-11 14:09:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:04,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:04,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412636695] [2024-10-11 14:09:04,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412636695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:04,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:04,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:09:04,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65396362] [2024-10-11 14:09:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:04,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 14:09:04,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 14:09:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 14:09:04,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:09:04,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-10-11 14:09:04,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:04,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:09:04,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:05,059 INFO L124 PetriNetUnfolderBase]: 288/497 cut-off events. [2024-10-11 14:09:05,059 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-10-11 14:09:05,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 497 events. 288/497 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1956 event pairs, 197 based on Foata normal form. 15/435 useless extension candidates. Maximal degree in co-relation 910. Up to 458 conditions per place. [2024-10-11 14:09:05,066 INFO L140 encePairwiseOnDemand]: 38/40 looper letters, 25 selfloop transitions, 0 changer transitions 2/32 dead transitions. [2024-10-11 14:09:05,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 127 flow [2024-10-11 14:09:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 14:09:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 14:09:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2024-10-11 14:09:05,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-10-11 14:09:05,081 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 81 flow. Second operand 2 states and 45 transitions. [2024-10-11 14:09:05,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 127 flow [2024-10-11 14:09:05,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:09:05,086 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 64 flow [2024-10-11 14:09:05,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-10-11 14:09:05,093 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-10-11 14:09:05,094 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 64 flow [2024-10-11 14:09:05,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-10-11 14:09:05,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:05,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:05,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:09:05,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:05,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:05,097 INFO L85 PathProgramCache]: Analyzing trace with hash -976015666, now seen corresponding path program 1 times [2024-10-11 14:09:05,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:05,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760057993] [2024-10-11 14:09:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:05,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:05,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760057993] [2024-10-11 14:09:05,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760057993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:05,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:05,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:09:05,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956974603] [2024-10-11 14:09:05,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:05,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:09:05,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:05,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:09:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:09:05,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:09:05,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-11 14:09:05,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:05,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:09:05,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:05,507 INFO L124 PetriNetUnfolderBase]: 147/301 cut-off events. [2024-10-11 14:09:05,507 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 14:09:05,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 301 events. 147/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1068 event pairs, 76 based on Foata normal form. 13/279 useless extension candidates. Maximal degree in co-relation 588. Up to 146 conditions per place. [2024-10-11 14:09:05,512 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 27 selfloop transitions, 2 changer transitions 4/38 dead transitions. [2024-10-11 14:09:05,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 149 flow [2024-10-11 14:09:05,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:09:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:09:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-10-11 14:09:05,515 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-11 14:09:05,515 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 64 flow. Second operand 3 states and 58 transitions. [2024-10-11 14:09:05,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 149 flow [2024-10-11 14:09:05,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 149 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:09:05,519 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2024-10-11 14:09:05,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-10-11 14:09:05,521 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-10-11 14:09:05,521 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2024-10-11 14:09:05,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-10-11 14:09:05,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:05,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:05,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:09:05,523 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:05,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash -840780127, now seen corresponding path program 1 times [2024-10-11 14:09:05,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:05,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586308987] [2024-10-11 14:09:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:05,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:05,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586308987] [2024-10-11 14:09:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586308987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:05,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:05,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:09:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936399300] [2024-10-11 14:09:05,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:05,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:09:05,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:05,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:09:05,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:09:05,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:09:05,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-10-11 14:09:05,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:05,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:09:05,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:05,711 INFO L124 PetriNetUnfolderBase]: 149/306 cut-off events. [2024-10-11 14:09:05,711 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 14:09:05,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 306 events. 149/306 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1063 event pairs, 118 based on Foata normal form. 8/294 useless extension candidates. Maximal degree in co-relation 624. Up to 257 conditions per place. [2024-10-11 14:09:05,715 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 28 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-10-11 14:09:05,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 144 flow [2024-10-11 14:09:05,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:09:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:09:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-10-11 14:09:05,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-10-11 14:09:05,716 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 3 states and 55 transitions. [2024-10-11 14:09:05,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 144 flow [2024-10-11 14:09:05,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:09:05,718 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 78 flow [2024-10-11 14:09:05,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-10-11 14:09:05,718 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-10-11 14:09:05,719 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 78 flow [2024-10-11 14:09:05,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-10-11 14:09:05,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:05,721 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:05,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:09:05,722 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:05,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash 102576644, now seen corresponding path program 1 times [2024-10-11 14:09:05,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:05,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894911456] [2024-10-11 14:09:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:05,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:05,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894911456] [2024-10-11 14:09:05,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894911456] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:05,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:05,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:09:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881645248] [2024-10-11 14:09:05,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:05,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:09:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:09:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:09:05,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:09:05,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-11 14:09:05,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:05,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:09:05,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:05,972 INFO L124 PetriNetUnfolderBase]: 112/263 cut-off events. [2024-10-11 14:09:05,972 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 14:09:05,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 263 events. 112/263 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 913 event pairs, 33 based on Foata normal form. 10/257 useless extension candidates. Maximal degree in co-relation 543. Up to 142 conditions per place. [2024-10-11 14:09:05,976 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 28 selfloop transitions, 3 changer transitions 1/37 dead transitions. [2024-10-11 14:09:05,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 159 flow [2024-10-11 14:09:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:09:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:09:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-11 14:09:05,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-10-11 14:09:05,977 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 3 states and 57 transitions. [2024-10-11 14:09:05,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 159 flow [2024-10-11 14:09:05,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 155 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:09:05,979 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 80 flow [2024-10-11 14:09:05,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-10-11 14:09:05,980 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-10-11 14:09:05,980 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 80 flow [2024-10-11 14:09:05,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-10-11 14:09:05,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:05,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:05,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:09:05,981 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:05,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash -73938727, now seen corresponding path program 1 times [2024-10-11 14:09:05,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11113162] [2024-10-11 14:09:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:06,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:06,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11113162] [2024-10-11 14:09:06,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11113162] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:09:06,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716129843] [2024-10-11 14:09:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:06,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:06,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:06,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:09:06,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:09:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:06,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 14:09:06,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:09:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:06,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:09:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:06,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716129843] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:09:06,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:09:06,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-11 14:09:06,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568046331] [2024-10-11 14:09:06,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:09:06,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:09:06,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:09:06,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:09:06,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:09:06,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 80 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2024-10-11 14:09:06,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:06,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:09:06,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:06,385 INFO L124 PetriNetUnfolderBase]: 130/281 cut-off events. [2024-10-11 14:09:06,386 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-11 14:09:06,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 281 events. 130/281 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 898 event pairs, 90 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 641. Up to 207 conditions per place. [2024-10-11 14:09:06,388 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 39 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-10-11 14:09:06,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 220 flow [2024-10-11 14:09:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:09:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:09:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-10-11 14:09:06,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-10-11 14:09:06,390 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 80 flow. Second operand 6 states and 95 transitions. [2024-10-11 14:09:06,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 220 flow [2024-10-11 14:09:06,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 49 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:09:06,392 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 113 flow [2024-10-11 14:09:06,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-10-11 14:09:06,396 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-10-11 14:09:06,396 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 113 flow [2024-10-11 14:09:06,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2024-10-11 14:09:06,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:06,397 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:06,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:09:06,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:06,598 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:06,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1806582274, now seen corresponding path program 2 times [2024-10-11 14:09:06,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:06,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236976397] [2024-10-11 14:09:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:06,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:06,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:06,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236976397] [2024-10-11 14:09:06,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236976397] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:09:06,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175779143] [2024-10-11 14:09:06,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:09:06,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:06,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:06,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:09:06,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:09:06,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:09:06,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:09:06,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:09:06,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:09:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:06,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:09:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:07,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175779143] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:09:07,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:09:07,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 14:09:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284201360] [2024-10-11 14:09:07,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:09:07,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:09:07,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:07,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:09:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:09:07,057 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:09:07,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 113 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:09:07,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:07,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:09:07,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:07,266 INFO L124 PetriNetUnfolderBase]: 166/353 cut-off events. [2024-10-11 14:09:07,267 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-10-11 14:09:07,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 353 events. 166/353 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1097 event pairs, 90 based on Foata normal form. 36/374 useless extension candidates. Maximal degree in co-relation 921. Up to 207 conditions per place. [2024-10-11 14:09:07,269 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 63 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-10-11 14:09:07,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 397 flow [2024-10-11 14:09:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:09:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:09:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 176 transitions. [2024-10-11 14:09:07,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-10-11 14:09:07,274 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 113 flow. Second operand 12 states and 176 transitions. [2024-10-11 14:09:07,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 397 flow [2024-10-11 14:09:07,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 383 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 14:09:07,279 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 183 flow [2024-10-11 14:09:07,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=183, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2024-10-11 14:09:07,280 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2024-10-11 14:09:07,281 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 183 flow [2024-10-11 14:09:07,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:09:07,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:07,282 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:07,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:09:07,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:07,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:07,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash -207915810, now seen corresponding path program 3 times [2024-10-11 14:09:07,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:07,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483935359] [2024-10-11 14:09:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:07,863 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:07,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:07,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483935359] [2024-10-11 14:09:07,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483935359] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:09:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678358844] [2024-10-11 14:09:07,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:09:07,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:07,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:07,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:09:07,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:09:09,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 14:09:09,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:09:09,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 14:09:09,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:09:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:09,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:09:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:09,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678358844] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:09:09,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:09:09,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-11 14:09:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443003937] [2024-10-11 14:09:09,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:09:09,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 14:09:09,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 14:09:09,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-11 14:09:09,386 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:09:09,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 183 flow. Second operand has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 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) [2024-10-11 14:09:09,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:09,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:09:09,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:09,736 INFO L124 PetriNetUnfolderBase]: 238/497 cut-off events. [2024-10-11 14:09:09,736 INFO L125 PetriNetUnfolderBase]: For 2908/2908 co-relation queries the response was YES. [2024-10-11 14:09:09,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1568 conditions, 497 events. 238/497 cut-off events. For 2908/2908 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1495 event pairs, 90 based on Foata normal form. 72/554 useless extension candidates. Maximal degree in co-relation 1551. Up to 207 conditions per place. [2024-10-11 14:09:09,740 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 111 selfloop transitions, 23 changer transitions 0/139 dead transitions. [2024-10-11 14:09:09,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 139 transitions, 767 flow [2024-10-11 14:09:09,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 14:09:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 14:09:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 338 transitions. [2024-10-11 14:09:09,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35208333333333336 [2024-10-11 14:09:09,743 INFO L175 Difference]: Start difference. First operand has 58 places, 39 transitions, 183 flow. Second operand 24 states and 338 transitions. [2024-10-11 14:09:09,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 139 transitions, 767 flow [2024-10-11 14:09:09,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 139 transitions, 695 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-10-11 14:09:09,751 INFO L231 Difference]: Finished difference. Result has 88 places, 51 transitions, 303 flow [2024-10-11 14:09:09,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=303, PETRI_PLACES=88, PETRI_TRANSITIONS=51} [2024-10-11 14:09:09,752 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2024-10-11 14:09:09,753 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 51 transitions, 303 flow [2024-10-11 14:09:09,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 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) [2024-10-11 14:09:09,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:09,753 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:09,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:09:09,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:09,958 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:09,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:09,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2100893026, now seen corresponding path program 4 times [2024-10-11 14:09:09,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:09,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420670571] [2024-10-11 14:09:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:10,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:11,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:11,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420670571] [2024-10-11 14:09:11,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420670571] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:09:11,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453957409] [2024-10-11 14:09:11,064 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:09:11,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:11,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:09:11,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:09:11,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:09:11,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:09:11,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 14:09:11,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:09:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:11,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:09:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:12,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453957409] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:09:12,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:09:12,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-10-11 14:09:12,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464935755] [2024-10-11 14:09:12,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:09:12,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-11 14:09:12,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:12,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-11 14:09:12,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-11 14:09:12,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-11 14:09:12,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 51 transitions, 303 flow. Second operand has 49 states, 49 states have (on average 9.346938775510203) internal successors, (458), 49 states have internal predecessors, (458), 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) [2024-10-11 14:09:12,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:12,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-11 14:09:12,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:13,007 INFO L124 PetriNetUnfolderBase]: 382/785 cut-off events. [2024-10-11 14:09:13,008 INFO L125 PetriNetUnfolderBase]: For 31600/31600 co-relation queries the response was YES. [2024-10-11 14:09:13,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 785 events. 382/785 cut-off events. For 31600/31600 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2286 event pairs, 90 based on Foata normal form. 144/914 useless extension candidates. Maximal degree in co-relation 2679. Up to 235 conditions per place. [2024-10-11 14:09:13,014 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 207 selfloop transitions, 47 changer transitions 0/259 dead transitions. [2024-10-11 14:09:13,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 259 transitions, 1463 flow [2024-10-11 14:09:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-11 14:09:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-10-11 14:09:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 662 transitions. [2024-10-11 14:09:13,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34479166666666666 [2024-10-11 14:09:13,017 INFO L175 Difference]: Start difference. First operand has 88 places, 51 transitions, 303 flow. Second operand 48 states and 662 transitions. [2024-10-11 14:09:13,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 259 transitions, 1463 flow [2024-10-11 14:09:13,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 259 transitions, 1319 flow, removed 61 selfloop flow, removed 11 redundant places. [2024-10-11 14:09:13,033 INFO L231 Difference]: Finished difference. Result has 148 places, 75 transitions, 543 flow [2024-10-11 14:09:13,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=543, PETRI_PLACES=148, PETRI_TRANSITIONS=75} [2024-10-11 14:09:13,034 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 112 predicate places. [2024-10-11 14:09:13,034 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 75 transitions, 543 flow [2024-10-11 14:09:13,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 9.346938775510203) internal successors, (458), 49 states have internal predecessors, (458), 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) [2024-10-11 14:09:13,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:13,035 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:13,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:09:13,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 14:09:13,239 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-11 14:09:13,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash 591787550, now seen corresponding path program 5 times [2024-10-11 14:09:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:13,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112821949] [2024-10-11 14:09:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:16,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112821949] [2024-10-11 14:09:16,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112821949] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:09:16,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080178210] [2024-10-11 14:09:16,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:09:16,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:16,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:09:16,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process