./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:49:47,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:49:47,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:49:47,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:49:47,589 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:49:47,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:49:47,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:49:47,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:49:47,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:49:47,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:49:47,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:49:47,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:49:47,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:49:47,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:49:47,611 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:49:47,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:49:47,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:49:47,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:49:47,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:49:47,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:49:47,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:49:47,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:49:47,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:49:47,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:49:47,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:49:47,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:49:47,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:49:47,617 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:49:47,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:49:47,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:49:47,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:49:47,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:49:47,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:47,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:49:47,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:49:47,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:49:47,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:49:47,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:49:47,619 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:49:47,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:49:47,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:49:47,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:49:47,621 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-19 01:49:47,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:49:47,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:49:47,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:49:47,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:49:47,826 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:49:47,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-19 01:49:49,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:49:49,247 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:49:49,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-19 01:49:49,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a4a6d92/018e1021955d4a1083300ca07dae8492/FLAGee2ccabaf [2024-11-19 01:49:49,661 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8a4a6d92/018e1021955d4a1083300ca07dae8492 [2024-11-19 01:49:49,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:49:49,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:49:49,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:49,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:49:49,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:49:49,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da37edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49, skipping insertion in model container [2024-11-19 01:49:49,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,689 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:49:49,866 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-19 01:49:49,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:49,875 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:49:49,890 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-19 01:49:49,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:49,903 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:49:49,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49 WrapperNode [2024-11-19 01:49:49,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:49,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:49,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:49:49,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:49:49,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,936 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-11-19 01:49:49,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:49,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:49:49,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:49:49,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:49:49,946 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,963 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 01:49:49,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:49:49,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:49:49,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:49:49,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:49:49,977 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (1/1) ... [2024-11-19 01:49:49,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:49,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:50,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:49:50,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:49:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:49:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:49:50,042 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:49:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:49:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:49:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:49:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:49:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 01:49:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 01:49:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:49:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:49:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:49:50,046 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:49:50,133 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:49:50,136 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:49:50,315 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:49:50,315 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:49:50,421 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:49:50,421 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:49:50,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:50 BoogieIcfgContainer [2024-11-19 01:49:50,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:49:50,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:49:50,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:49:50,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:49:50,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:49:49" (1/3) ... [2024-11-19 01:49:50,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee37b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:50, skipping insertion in model container [2024-11-19 01:49:50,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:49" (2/3) ... [2024-11-19 01:49:50,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee37b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:50, skipping insertion in model container [2024-11-19 01:49:50,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:50" (3/3) ... [2024-11-19 01:49:50,431 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-19 01:49:50,445 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:49:50,445 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:49:50,446 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:49:50,501 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 01:49:50,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-19 01:49:50,572 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-19 01:49:50,572 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:49:50,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-19 01:49:50,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-19 01:49:50,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-19 01:49:50,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:49:50,598 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;@6cf8bd68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:49:50,598 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 01:49:50,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:49:50,613 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-19 01:49:50,613 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:49:50,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:50,614 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:50,615 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)] === [2024-11-19 01:49:50,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash 419504288, now seen corresponding path program 1 times [2024-11-19 01:49:50,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:50,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277882570] [2024-11-19 01:49:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:50,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:50,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:50,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277882570] [2024-11-19 01:49:50,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277882570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:50,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:50,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:49:50,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223287276] [2024-11-19 01:49:50,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:50,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:49:50,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:49:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:49:50,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:49:50,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:50,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:50,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:49:50,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:51,464 INFO L124 PetriNetUnfolderBase]: 4206/5690 cut-off events. [2024-11-19 01:49:51,465 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2024-11-19 01:49:51,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 5690 events. 4206/5690 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24102 event pairs, 1080 based on Foata normal form. 1/5300 useless extension candidates. Maximal degree in co-relation 10315. Up to 4714 conditions per place. [2024-11-19 01:49:51,503 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-19 01:49:51,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-19 01:49:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:49:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:49:51,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-19 01:49:51,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-11-19 01:49:51,516 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 77 transitions. [2024-11-19 01:49:51,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-19 01:49:51,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 01:49:51,530 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-19 01:49:51,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-19 01:49:51,535 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-19 01:49:51,535 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-19 01:49:51,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:51,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:51,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:51,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:49:51,537 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:49:51,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:51,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1938485262, now seen corresponding path program 1 times [2024-11-19 01:49:51,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:51,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577260037] [2024-11-19 01:49:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:51,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:51,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:51,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577260037] [2024-11-19 01:49:51,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577260037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:51,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:51,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799907528] [2024-11-19 01:49:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:51,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:51,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:51,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:51,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:51,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:49:51,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:51,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:51,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:49:51,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:52,449 INFO L124 PetriNetUnfolderBase]: 8890/11757 cut-off events. [2024-11-19 01:49:52,450 INFO L125 PetriNetUnfolderBase]: For 1383/1408 co-relation queries the response was YES. [2024-11-19 01:49:52,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26035 conditions, 11757 events. 8890/11757 cut-off events. For 1383/1408 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55838 event pairs, 2934 based on Foata normal form. 0/11130 useless extension candidates. Maximal degree in co-relation 3736. Up to 6812 conditions per place. [2024-11-19 01:49:52,505 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 89 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2024-11-19 01:49:52,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 101 transitions, 464 flow [2024-11-19 01:49:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-19 01:49:52,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-19 01:49:52,508 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 125 transitions. [2024-11-19 01:49:52,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 101 transitions, 464 flow [2024-11-19 01:49:52,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:52,511 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 156 flow [2024-11-19 01:49:52,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-19 01:49:52,514 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-19 01:49:52,514 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 156 flow [2024-11-19 01:49:52,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:52,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:52,514 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:52,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:49:52,515 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:49:52,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash 725134442, now seen corresponding path program 2 times [2024-11-19 01:49:52,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:52,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89471557] [2024-11-19 01:49:52,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:52,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:52,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:52,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89471557] [2024-11-19 01:49:52,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89471557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:52,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587452416] [2024-11-19 01:49:52,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:52,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:52,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:52,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:49:52,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:49:52,713 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:52,714 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:52,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:49:52,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:52,797 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:52,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587452416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:52,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:52,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-19 01:49:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522277922] [2024-11-19 01:49:52,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:52,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:49:52,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:49:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:49:52,849 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-19 01:49:52,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:52,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-19 01:49:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:54,365 INFO L124 PetriNetUnfolderBase]: 15902/20779 cut-off events. [2024-11-19 01:49:54,365 INFO L125 PetriNetUnfolderBase]: For 6700/6700 co-relation queries the response was YES. [2024-11-19 01:49:54,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53356 conditions, 20779 events. 15902/20779 cut-off events. For 6700/6700 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 100699 event pairs, 1195 based on Foata normal form. 354/21133 useless extension candidates. Maximal degree in co-relation 27004. Up to 3779 conditions per place. [2024-11-19 01:49:54,447 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 245 selfloop transitions, 35 changer transitions 1/282 dead transitions. [2024-11-19 01:49:54,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 282 transitions, 1380 flow [2024-11-19 01:49:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:49:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:49:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 338 transitions. [2024-11-19 01:49:54,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-11-19 01:49:54,453 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 156 flow. Second operand 14 states and 338 transitions. [2024-11-19 01:49:54,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 282 transitions, 1380 flow [2024-11-19 01:49:54,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 282 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:49:54,464 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 389 flow [2024-11-19 01:49:54,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2024-11-19 01:49:54,465 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-19 01:49:54,465 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 389 flow [2024-11-19 01:49:54,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:54,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:54,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:54,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:49:54,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:54,668 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:49:54,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1244700002, now seen corresponding path program 1 times [2024-11-19 01:49:54,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:54,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266575664] [2024-11-19 01:49:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:54,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:54,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:54,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266575664] [2024-11-19 01:49:54,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266575664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:54,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:54,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:54,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037107705] [2024-11-19 01:49:54,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:54,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:54,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:54,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:54,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:49:54,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:54,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:54,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:49:54,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:55,814 INFO L124 PetriNetUnfolderBase]: 13851/18340 cut-off events. [2024-11-19 01:49:55,815 INFO L125 PetriNetUnfolderBase]: For 21244/21244 co-relation queries the response was YES. [2024-11-19 01:49:55,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55514 conditions, 18340 events. 13851/18340 cut-off events. For 21244/21244 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 91058 event pairs, 4183 based on Foata normal form. 36/18373 useless extension candidates. Maximal degree in co-relation 49455. Up to 9229 conditions per place. [2024-11-19 01:49:55,941 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 101 selfloop transitions, 12 changer transitions 15/132 dead transitions. [2024-11-19 01:49:55,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 824 flow [2024-11-19 01:49:55,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-19 01:49:55,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-19 01:49:55,943 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 389 flow. Second operand 5 states and 126 transitions. [2024-11-19 01:49:55,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 824 flow [2024-11-19 01:49:56,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 132 transitions, 791 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:56,194 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 394 flow [2024-11-19 01:49:56,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2024-11-19 01:49:56,195 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-11-19 01:49:56,195 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 394 flow [2024-11-19 01:49:56,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:56,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:56,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:56,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:49:56,196 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:49:56,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash -411913122, now seen corresponding path program 3 times [2024-11-19 01:49:56,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:56,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373845310] [2024-11-19 01:49:56,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:56,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:56,212 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:49:56,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:56,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:56,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373845310] [2024-11-19 01:49:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373845310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:56,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397861841] [2024-11-19 01:49:56,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:56,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:56,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:56,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:49:56,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:49:56,329 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:49:56,329 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:56,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:49:56,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:56,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397861841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:56,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-19 01:49:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27733092] [2024-11-19 01:49:56,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:56,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:49:56,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:56,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:49:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:49:56,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-19 01:49:56,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:56,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:56,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-19 01:49:56,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:58,114 INFO L124 PetriNetUnfolderBase]: 22518/29285 cut-off events. [2024-11-19 01:49:58,115 INFO L125 PetriNetUnfolderBase]: For 42913/42913 co-relation queries the response was YES. [2024-11-19 01:49:58,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88459 conditions, 29285 events. 22518/29285 cut-off events. For 42913/42913 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 140675 event pairs, 4743 based on Foata normal form. 438/29723 useless extension candidates. Maximal degree in co-relation 72610. Up to 9338 conditions per place. [2024-11-19 01:49:58,250 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 156 selfloop transitions, 46 changer transitions 0/203 dead transitions. [2024-11-19 01:49:58,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 203 transitions, 1291 flow [2024-11-19 01:49:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:49:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:49:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-11-19 01:49:58,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-11-19 01:49:58,252 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 394 flow. Second operand 8 states and 193 transitions. [2024-11-19 01:49:58,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 203 transitions, 1291 flow [2024-11-19 01:49:58,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 203 transitions, 1250 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 01:49:58,498 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 686 flow [2024-11-19 01:49:58,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2024-11-19 01:49:58,499 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-11-19 01:49:58,499 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 686 flow [2024-11-19 01:49:58,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:58,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:58,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:49:58,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:49:58,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:58,700 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:49:58,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash -151783974, now seen corresponding path program 4 times [2024-11-19 01:49:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292016474] [2024-11-19 01:49:58,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:49:58,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:58,708 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:49:58,708 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:49:58,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:58,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292016474] [2024-11-19 01:49:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292016474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:58,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:58,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578230385] [2024-11-19 01:49:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:58,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:58,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:58,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-19 01:49:58,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:58,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:58,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-19 01:49:58,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:00,593 INFO L124 PetriNetUnfolderBase]: 23346/30475 cut-off events. [2024-11-19 01:50:00,593 INFO L125 PetriNetUnfolderBase]: For 53137/53137 co-relation queries the response was YES. [2024-11-19 01:50:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99793 conditions, 30475 events. 23346/30475 cut-off events. For 53137/53137 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 148306 event pairs, 7980 based on Foata normal form. 24/30499 useless extension candidates. Maximal degree in co-relation 79538. Up to 14716 conditions per place. [2024-11-19 01:50:00,746 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 127 selfloop transitions, 19 changer transitions 10/157 dead transitions. [2024-11-19 01:50:00,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 157 transitions, 1230 flow [2024-11-19 01:50:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-19 01:50:00,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-19 01:50:00,748 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 686 flow. Second operand 5 states and 115 transitions. [2024-11-19 01:50:00,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 157 transitions, 1230 flow [2024-11-19 01:50:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 157 transitions, 1208 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-19 01:50:01,229 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 711 flow [2024-11-19 01:50:01,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=711, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-11-19 01:50:01,230 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2024-11-19 01:50:01,230 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 711 flow [2024-11-19 01:50:01,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:01,230 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:01,230 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:01,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:50:01,231 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:01,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1062235910, now seen corresponding path program 2 times [2024-11-19 01:50:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546485035] [2024-11-19 01:50:01,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:01,239 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:01,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:01,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:01,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546485035] [2024-11-19 01:50:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546485035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:01,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:01,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:01,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542966601] [2024-11-19 01:50:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:01,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:50:01,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:50:01,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:50:01,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:50:01,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:01,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:01,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:50:01,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:03,114 INFO L124 PetriNetUnfolderBase]: 22260/29495 cut-off events. [2024-11-19 01:50:03,114 INFO L125 PetriNetUnfolderBase]: For 54692/55205 co-relation queries the response was YES. [2024-11-19 01:50:03,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96286 conditions, 29495 events. 22260/29495 cut-off events. For 54692/55205 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 155033 event pairs, 2670 based on Foata normal form. 240/29730 useless extension candidates. Maximal degree in co-relation 86388. Up to 10004 conditions per place. [2024-11-19 01:50:03,289 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 160 selfloop transitions, 39 changer transitions 1/205 dead transitions. [2024-11-19 01:50:03,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 205 transitions, 1510 flow [2024-11-19 01:50:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-11-19 01:50:03,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-19 01:50:03,291 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 711 flow. Second operand 7 states and 176 transitions. [2024-11-19 01:50:03,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 205 transitions, 1510 flow [2024-11-19 01:50:03,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 205 transitions, 1465 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-19 01:50:03,808 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 842 flow [2024-11-19 01:50:03,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=842, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-11-19 01:50:03,809 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-11-19 01:50:03,809 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 842 flow [2024-11-19 01:50:03,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:03,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:03,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:03,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:50:03,809 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:03,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1024588838, now seen corresponding path program 5 times [2024-11-19 01:50:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902420005] [2024-11-19 01:50:03,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:03,821 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:03,821 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:03,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902420005] [2024-11-19 01:50:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902420005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:03,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:03,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:50:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189545833] [2024-11-19 01:50:03,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:03,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:03,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:03,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-19 01:50:03,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:03,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:03,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-19 01:50:03,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:06,057 INFO L124 PetriNetUnfolderBase]: 27056/35355 cut-off events. [2024-11-19 01:50:06,058 INFO L125 PetriNetUnfolderBase]: For 80369/80369 co-relation queries the response was YES. [2024-11-19 01:50:06,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117474 conditions, 35355 events. 27056/35355 cut-off events. For 80369/80369 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 178650 event pairs, 3875 based on Foata normal form. 354/35709 useless extension candidates. Maximal degree in co-relation 111045. Up to 9275 conditions per place. [2024-11-19 01:50:06,275 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 141 selfloop transitions, 55 changer transitions 2/199 dead transitions. [2024-11-19 01:50:06,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 199 transitions, 1549 flow [2024-11-19 01:50:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-11-19 01:50:06,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-19 01:50:06,276 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 842 flow. Second operand 7 states and 166 transitions. [2024-11-19 01:50:06,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 199 transitions, 1549 flow [2024-11-19 01:50:06,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 199 transitions, 1502 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-19 01:50:06,913 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 972 flow [2024-11-19 01:50:06,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=972, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2024-11-19 01:50:06,913 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 50 predicate places. [2024-11-19 01:50:06,914 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 972 flow [2024-11-19 01:50:06,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:06,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:06,914 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:06,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:50:06,914 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:06,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash 842298878, now seen corresponding path program 3 times [2024-11-19 01:50:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:06,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108625699] [2024-11-19 01:50:06,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:06,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:06,922 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:06,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:06,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108625699] [2024-11-19 01:50:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108625699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800605306] [2024-11-19 01:50:06,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:06,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:50:06,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:50:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:50:06,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-19 01:50:06,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 972 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:06,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:06,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-19 01:50:06,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:09,318 INFO L124 PetriNetUnfolderBase]: 27670/36161 cut-off events. [2024-11-19 01:50:09,318 INFO L125 PetriNetUnfolderBase]: For 102143/102143 co-relation queries the response was YES. [2024-11-19 01:50:09,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125514 conditions, 36161 events. 27670/36161 cut-off events. For 102143/102143 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 184050 event pairs, 9962 based on Foata normal form. 324/36485 useless extension candidates. Maximal degree in co-relation 119297. Up to 22885 conditions per place. [2024-11-19 01:50:09,521 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 147 selfloop transitions, 29 changer transitions 0/177 dead transitions. [2024-11-19 01:50:09,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 177 transitions, 1526 flow [2024-11-19 01:50:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:50:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:50:09,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-11-19 01:50:09,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 01:50:09,522 INFO L175 Difference]: Start difference. First operand has 94 places, 108 transitions, 972 flow. Second operand 6 states and 144 transitions. [2024-11-19 01:50:09,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 177 transitions, 1526 flow [2024-11-19 01:50:10,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 177 transitions, 1488 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-19 01:50:10,058 INFO L231 Difference]: Finished difference. Result has 93 places, 109 transitions, 1013 flow [2024-11-19 01:50:10,058 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1013, PETRI_PLACES=93, PETRI_TRANSITIONS=109} [2024-11-19 01:50:10,058 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-11-19 01:50:10,058 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 109 transitions, 1013 flow [2024-11-19 01:50:10,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:10,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:10,059 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:10,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:50:10,059 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:10,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash -496165904, now seen corresponding path program 4 times [2024-11-19 01:50:10,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:10,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268168253] [2024-11-19 01:50:10,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:50:10,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:10,066 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:50:10,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:10,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:10,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268168253] [2024-11-19 01:50:10,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268168253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:10,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:10,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:50:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996336437] [2024-11-19 01:50:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:10,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:10,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-19 01:50:10,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 109 transitions, 1013 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:10,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:10,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-19 01:50:10,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:12,494 INFO L124 PetriNetUnfolderBase]: 29053/37940 cut-off events. [2024-11-19 01:50:12,494 INFO L125 PetriNetUnfolderBase]: For 109581/109581 co-relation queries the response was YES. [2024-11-19 01:50:12,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133799 conditions, 37940 events. 29053/37940 cut-off events. For 109581/109581 co-relation queries the response was YES. Maximal size of possible extension queue 1231. Compared 194178 event pairs, 10204 based on Foata normal form. 36/37976 useless extension candidates. Maximal degree in co-relation 110827. Up to 23041 conditions per place. [2024-11-19 01:50:12,709 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 130 selfloop transitions, 23 changer transitions 10/164 dead transitions. [2024-11-19 01:50:12,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 164 transitions, 1543 flow [2024-11-19 01:50:12,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-19 01:50:12,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-19 01:50:12,710 INFO L175 Difference]: Start difference. First operand has 93 places, 109 transitions, 1013 flow. Second operand 5 states and 116 transitions. [2024-11-19 01:50:12,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 164 transitions, 1543 flow [2024-11-19 01:50:13,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 164 transitions, 1483 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 01:50:13,007 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 1029 flow [2024-11-19 01:50:13,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1029, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-11-19 01:50:13,008 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2024-11-19 01:50:13,008 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 1029 flow [2024-11-19 01:50:13,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:13,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:13,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:13,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:50:13,008 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:13,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1290618586, now seen corresponding path program 6 times [2024-11-19 01:50:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:13,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594961520] [2024-11-19 01:50:13,009 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:13,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:13,019 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:50:13,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594961520] [2024-11-19 01:50:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594961520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:13,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:13,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:50:13,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409233309] [2024-11-19 01:50:13,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:13,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:13,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:13,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:50:13,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 1029 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:13,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:13,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:50:13,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:15,440 INFO L124 PetriNetUnfolderBase]: 25257/33502 cut-off events. [2024-11-19 01:50:15,441 INFO L125 PetriNetUnfolderBase]: For 108565/108972 co-relation queries the response was YES. [2024-11-19 01:50:15,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118487 conditions, 33502 events. 25257/33502 cut-off events. For 108565/108972 co-relation queries the response was YES. Maximal size of possible extension queue 1340. Compared 178697 event pairs, 9325 based on Foata normal form. 171/33505 useless extension candidates. Maximal degree in co-relation 98602. Up to 18475 conditions per place. [2024-11-19 01:50:15,615 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 105 selfloop transitions, 24 changer transitions 9/158 dead transitions. [2024-11-19 01:50:15,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 158 transitions, 1462 flow [2024-11-19 01:50:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:15,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-19 01:50:15,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-19 01:50:15,617 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 1029 flow. Second operand 5 states and 114 transitions. [2024-11-19 01:50:15,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 158 transitions, 1462 flow [2024-11-19 01:50:16,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 158 transitions, 1413 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 01:50:16,110 INFO L231 Difference]: Finished difference. Result has 97 places, 110 transitions, 1026 flow [2024-11-19 01:50:16,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1026, PETRI_PLACES=97, PETRI_TRANSITIONS=110} [2024-11-19 01:50:16,110 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2024-11-19 01:50:16,110 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 110 transitions, 1026 flow [2024-11-19 01:50:16,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:16,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:16,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:16,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:50:16,111 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:16,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2063547054, now seen corresponding path program 5 times [2024-11-19 01:50:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:16,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467149015] [2024-11-19 01:50:16,111 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:50:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:16,118 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:16,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:16,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:16,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467149015] [2024-11-19 01:50:16,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467149015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:16,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:16,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:50:16,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501514116] [2024-11-19 01:50:16,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:16,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:16,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:16,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-19 01:50:16,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 110 transitions, 1026 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:16,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:16,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-19 01:50:16,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:18,442 INFO L124 PetriNetUnfolderBase]: 28622/37287 cut-off events. [2024-11-19 01:50:18,442 INFO L125 PetriNetUnfolderBase]: For 109562/109562 co-relation queries the response was YES. [2024-11-19 01:50:18,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131339 conditions, 37287 events. 28622/37287 cut-off events. For 109562/109562 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 187877 event pairs, 3462 based on Foata normal form. 240/37527 useless extension candidates. Maximal degree in co-relation 108861. Up to 12565 conditions per place. [2024-11-19 01:50:18,707 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 173 selfloop transitions, 46 changer transitions 1/221 dead transitions. [2024-11-19 01:50:18,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 221 transitions, 1966 flow [2024-11-19 01:50:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-11-19 01:50:18,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2024-11-19 01:50:18,708 INFO L175 Difference]: Start difference. First operand has 97 places, 110 transitions, 1026 flow. Second operand 7 states and 166 transitions. [2024-11-19 01:50:18,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 221 transitions, 1966 flow [2024-11-19 01:50:19,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 221 transitions, 1898 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:19,215 INFO L231 Difference]: Finished difference. Result has 100 places, 123 transitions, 1225 flow [2024-11-19 01:50:19,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1225, PETRI_PLACES=100, PETRI_TRANSITIONS=123} [2024-11-19 01:50:19,215 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 56 predicate places. [2024-11-19 01:50:19,215 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 123 transitions, 1225 flow [2024-11-19 01:50:19,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:19,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:19,216 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:19,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:50:19,216 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:19,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash 564146142, now seen corresponding path program 6 times [2024-11-19 01:50:19,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:19,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355605101] [2024-11-19 01:50:19,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:19,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:19,229 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:50:19,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:19,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355605101] [2024-11-19 01:50:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355605101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:19,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:19,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:50:19,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906832016] [2024-11-19 01:50:19,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:19,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:19,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:19,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:19,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:50:19,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 123 transitions, 1225 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:19,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:19,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:50:19,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:21,422 INFO L124 PetriNetUnfolderBase]: 24033/31779 cut-off events. [2024-11-19 01:50:21,423 INFO L125 PetriNetUnfolderBase]: For 114889/115192 co-relation queries the response was YES. [2024-11-19 01:50:21,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115513 conditions, 31779 events. 24033/31779 cut-off events. For 114889/115192 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 165874 event pairs, 8834 based on Foata normal form. 36/31762 useless extension candidates. Maximal degree in co-relation 95378. Up to 17065 conditions per place. [2024-11-19 01:50:21,643 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 120 selfloop transitions, 24 changer transitions 10/168 dead transitions. [2024-11-19 01:50:21,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 168 transitions, 1657 flow [2024-11-19 01:50:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-19 01:50:21,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-19 01:50:21,644 INFO L175 Difference]: Start difference. First operand has 100 places, 123 transitions, 1225 flow. Second operand 5 states and 114 transitions. [2024-11-19 01:50:21,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 168 transitions, 1657 flow [2024-11-19 01:50:22,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 168 transitions, 1636 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:22,327 INFO L231 Difference]: Finished difference. Result has 104 places, 122 transitions, 1233 flow [2024-11-19 01:50:22,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1233, PETRI_PLACES=104, PETRI_TRANSITIONS=122} [2024-11-19 01:50:22,331 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-11-19 01:50:22,331 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 1233 flow [2024-11-19 01:50:22,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:22,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:22,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:22,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:50:22,331 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:22,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash 605232994, now seen corresponding path program 1 times [2024-11-19 01:50:22,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:22,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748047117] [2024-11-19 01:50:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:22,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:22,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748047117] [2024-11-19 01:50:22,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748047117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:22,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588178175] [2024-11-19 01:50:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:22,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:22,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:22,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:22,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:50:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:22,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:50:22,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:22,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:50:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588178175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:22,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-19 01:50:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640004667] [2024-11-19 01:50:22,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:22,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:50:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:50:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:22,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:50:22,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 122 transitions, 1233 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:22,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:22,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:50:22,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:26,929 INFO L124 PetriNetUnfolderBase]: 44147/60189 cut-off events. [2024-11-19 01:50:26,929 INFO L125 PetriNetUnfolderBase]: For 245166/245921 co-relation queries the response was YES. [2024-11-19 01:50:27,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217206 conditions, 60189 events. 44147/60189 cut-off events. For 245166/245921 co-relation queries the response was YES. Maximal size of possible extension queue 1848. Compared 359062 event pairs, 5559 based on Foata normal form. 1676/61633 useless extension candidates. Maximal degree in co-relation 193644. Up to 26230 conditions per place. [2024-11-19 01:50:27,388 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 316 selfloop transitions, 20 changer transitions 4/374 dead transitions. [2024-11-19 01:50:27,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 374 transitions, 3956 flow [2024-11-19 01:50:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-11-19 01:50:27,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2024-11-19 01:50:27,389 INFO L175 Difference]: Start difference. First operand has 104 places, 122 transitions, 1233 flow. Second operand 7 states and 209 transitions. [2024-11-19 01:50:27,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 374 transitions, 3956 flow [2024-11-19 01:50:29,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 374 transitions, 3800 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-19 01:50:29,280 INFO L231 Difference]: Finished difference. Result has 108 places, 139 transitions, 1318 flow [2024-11-19 01:50:29,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1318, PETRI_PLACES=108, PETRI_TRANSITIONS=139} [2024-11-19 01:50:29,281 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 64 predicate places. [2024-11-19 01:50:29,281 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 139 transitions, 1318 flow [2024-11-19 01:50:29,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:29,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:29,281 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:50:29,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 01:50:29,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:29,482 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:50:29,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash -216638230, now seen corresponding path program 2 times [2024-11-19 01:50:29,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:29,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006480036] [2024-11-19 01:50:29,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:29,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:29,492 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:29,492 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:29,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006480036] [2024-11-19 01:50:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006480036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552430838] [2024-11-19 01:50:29,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:29,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:29,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:29,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:50:29,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:50:29,631 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:29,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:29,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:50:29,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:50:29,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:50:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552430838] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:29,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:50:29,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-11-19 01:50:29,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107000028] [2024-11-19 01:50:29,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:29,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:50:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:50:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:50:29,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:50:29,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 139 transitions, 1318 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:50:29,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:29,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:50:29,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand