./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-counter-determinism.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-counter-determinism.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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:49:41,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:49:41,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:49:41,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:49:41,773 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:49:41,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:49:41,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:49:41,804 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:49:41,805 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:49:41,806 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:49:41,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:49:41,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:49:41,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:49:41,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:49:41,809 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:49:41,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:49:41,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:49:41,810 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:49:41,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:49:41,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:49:41,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:49:41,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:49:41,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:49:41,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:49:41,816 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:49:41,817 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:49:41,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:49:41,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:49:41,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:49:41,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:49:41,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:49:41,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:49:41,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:41,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:49:41,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:49:41,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:49:41,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:49:41,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:49:41,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:49:41,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:49:41,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:49:41,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:49:41,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-19 01:49:42,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:49:42,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:49:42,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:49:42,132 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:49:42,133 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:49:42,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-19 01:49:43,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:49:43,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:49:43,801 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-19 01:49:43,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161b41376/c6e0e4f80f1f45bba93483d08612b710/FLAG096189f26 [2024-11-19 01:49:43,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161b41376/c6e0e4f80f1f45bba93483d08612b710 [2024-11-19 01:49:43,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:49:43,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:49:43,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:43,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:49:43,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:49:43,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:43" (1/1) ... [2024-11-19 01:49:43,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2a60b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:43, skipping insertion in model container [2024-11-19 01:49:43,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:43" (1/1) ... [2024-11-19 01:49:43,872 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:49:44,046 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-counter-determinism.wvr.c[2218,2231] [2024-11-19 01:49:44,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:44,057 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:49:44,077 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-counter-determinism.wvr.c[2218,2231] [2024-11-19 01:49:44,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:49:44,098 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:49:44,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44 WrapperNode [2024-11-19 01:49:44,098 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:49:44,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:44,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:49:44,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:49:44,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,131 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 94 [2024-11-19 01:49:44,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:49:44,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:49:44,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:49:44,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:49:44,142 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,159 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 01:49:44,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:49:44,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:49:44,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:49:44,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:49:44,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (1/1) ... [2024-11-19 01:49:44,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:49:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:44,222 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 01:49:44,226 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 01:49:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:49:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:49:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:49:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:49:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:49:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:49:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:49:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 01:49:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 01:49:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:49:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:49:44,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:49:44,276 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 01:49:44,368 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:49:44,369 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:49:44,566 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:49:44,566 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:49:44,720 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:49:44,721 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:49:44,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:44 BoogieIcfgContainer [2024-11-19 01:49:44,722 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:49:44,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:49:44,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:49:44,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:49:44,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:49:43" (1/3) ... [2024-11-19 01:49:44,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5cf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:44, skipping insertion in model container [2024-11-19 01:49:44,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:44" (2/3) ... [2024-11-19 01:49:44,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5cf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:49:44, skipping insertion in model container [2024-11-19 01:49:44,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:49:44" (3/3) ... [2024-11-19 01:49:44,729 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-19 01:49:44,742 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:49:44,742 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:49:44,742 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:49:44,801 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 01:49:44,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-19 01:49:44,888 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-19 01:49:44,889 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:49:44,895 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 01:49:44,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-19 01:49:44,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-19 01:49:44,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:49:44,922 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;@cf0207d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:49:44,922 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 01:49:44,937 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:49:44,937 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-19 01:49:44,939 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:49:44,940 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:44,941 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 01:49:44,942 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 01:49:44,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:44,946 INFO L85 PathProgramCache]: Analyzing trace with hash -402680235, now seen corresponding path program 1 times [2024-11-19 01:49:44,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:44,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227892374] [2024-11-19 01:49:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:44,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:45,295 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 01:49:45,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:45,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227892374] [2024-11-19 01:49:45,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227892374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:45,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:45,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:49:45,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485472383] [2024-11-19 01:49:45,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:45,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:49:45,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:49:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:49:45,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:49:45,332 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 01:49:45,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:45,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:49:45,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:46,107 INFO L124 PetriNetUnfolderBase]: 5145/6882 cut-off events. [2024-11-19 01:49:46,108 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2024-11-19 01:49:46,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14113 conditions, 6882 events. 5145/6882 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 30589 event pairs, 1020 based on Foata normal form. 1/6269 useless extension candidates. Maximal degree in co-relation 12491. Up to 5288 conditions per place. [2024-11-19 01:49:46,169 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 51 selfloop transitions, 5 changer transitions 1/60 dead transitions. [2024-11-19 01:49:46,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 279 flow [2024-11-19 01:49:46,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:49:46,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:49:46,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-19 01:49:46,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-11-19 01:49:46,185 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 79 transitions. [2024-11-19 01:49:46,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 279 flow [2024-11-19 01:49:46,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 249 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 01:49:46,201 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-11-19 01:49:46,204 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=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-11-19 01:49:46,210 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-19 01:49:46,211 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-11-19 01:49:46,211 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 01:49:46,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:46,211 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 01:49:46,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:49:46,212 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 01:49:46,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:46,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1826027281, now seen corresponding path program 1 times [2024-11-19 01:49:46,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:46,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152466301] [2024-11-19 01:49:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:46,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:46,411 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 01:49:46,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152466301] [2024-11-19 01:49:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152466301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:46,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:46,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:46,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200575942] [2024-11-19 01:49:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:46,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:46,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:46,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:46,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:49:46,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 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 01:49:46,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:46,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:49:46,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:47,731 INFO L124 PetriNetUnfolderBase]: 11897/15389 cut-off events. [2024-11-19 01:49:47,733 INFO L125 PetriNetUnfolderBase]: For 2022/2037 co-relation queries the response was YES. [2024-11-19 01:49:47,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35060 conditions, 15389 events. 11897/15389 cut-off events. For 2022/2037 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 72929 event pairs, 3639 based on Foata normal form. 0/13180 useless extension candidates. Maximal degree in co-relation 5572. Up to 7867 conditions per place. [2024-11-19 01:49:47,839 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 101 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2024-11-19 01:49:47,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 113 transitions, 540 flow [2024-11-19 01:49:47,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-19 01:49:47,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-19 01:49:47,842 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 128 transitions. [2024-11-19 01:49:47,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 113 transitions, 540 flow [2024-11-19 01:49:47,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 113 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:47,849 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2024-11-19 01:49:47,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-11-19 01:49:47,850 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-19 01:49:47,850 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2024-11-19 01:49:47,850 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 01:49:47,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:47,851 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 01:49:47,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:49:47,851 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 01:49:47,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1025441771, now seen corresponding path program 2 times [2024-11-19 01:49:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:47,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535972913] [2024-11-19 01:49:47,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:47,885 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:47,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:48,002 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 01:49:48,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535972913] [2024-11-19 01:49:48,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535972913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:49:48,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331001711] [2024-11-19 01:49:48,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:49:48,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:49:48,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:49:48,008 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 01:49:48,012 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 01:49:48,106 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:48,106 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:48,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:49:48,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:49:48,191 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 01:49:48,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:49:48,246 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 01:49:48,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331001711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:49:48,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:49:48,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-19 01:49:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214134819] [2024-11-19 01:49:48,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:49:48,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:49:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:49:48,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:49:48,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-19 01:49:48,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 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 01:49:48,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:48,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-19 01:49:48,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:50,841 INFO L124 PetriNetUnfolderBase]: 21486/27869 cut-off events. [2024-11-19 01:49:50,842 INFO L125 PetriNetUnfolderBase]: For 11156/11156 co-relation queries the response was YES. [2024-11-19 01:49:50,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72618 conditions, 27869 events. 21486/27869 cut-off events. For 11156/11156 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 138447 event pairs, 1706 based on Foata normal form. 0/25782 useless extension candidates. Maximal degree in co-relation 35632. Up to 5769 conditions per place. [2024-11-19 01:49:51,006 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 268 selfloop transitions, 38 changer transitions 0/307 dead transitions. [2024-11-19 01:49:51,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 307 transitions, 1593 flow [2024-11-19 01:49:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:49:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:49:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 338 transitions. [2024-11-19 01:49:51,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-11-19 01:49:51,014 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 14 states and 338 transitions. [2024-11-19 01:49:51,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 307 transitions, 1593 flow [2024-11-19 01:49:51,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 307 transitions, 1593 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:49:51,029 INFO L231 Difference]: Finished difference. Result has 63 places, 80 transitions, 395 flow [2024-11-19 01:49:51,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=395, PETRI_PLACES=63, PETRI_TRANSITIONS=80} [2024-11-19 01:49:51,030 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2024-11-19 01:49:51,030 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 80 transitions, 395 flow [2024-11-19 01:49:51,030 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 01:49:51,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:51,031 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 01:49:51,051 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 01:49:51,237 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 01:49:51,238 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 01:49:51,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:51,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1155723531, now seen corresponding path program 3 times [2024-11-19 01:49:51,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:51,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096903296] [2024-11-19 01:49:51,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:49:51,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:51,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:49:51,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:51,319 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 01:49:51,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:51,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096903296] [2024-11-19 01:49:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096903296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:51,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010177440] [2024-11-19 01:49:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:51,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:51,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:51,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:51,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:49:51,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 80 transitions, 395 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 01:49:51,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:51,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:49:51,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:53,770 INFO L124 PetriNetUnfolderBase]: 30804/40139 cut-off events. [2024-11-19 01:49:53,770 INFO L125 PetriNetUnfolderBase]: For 50337/50638 co-relation queries the response was YES. [2024-11-19 01:49:53,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125390 conditions, 40139 events. 30804/40139 cut-off events. For 50337/50638 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 217258 event pairs, 8845 based on Foata normal form. 263/38593 useless extension candidates. Maximal degree in co-relation 96279. Up to 17900 conditions per place. [2024-11-19 01:49:54,067 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 175 selfloop transitions, 10 changer transitions 0/194 dead transitions. [2024-11-19 01:49:54,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 194 transitions, 1294 flow [2024-11-19 01:49:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-19 01:49:54,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-19 01:49:54,072 INFO L175 Difference]: Start difference. First operand has 63 places, 80 transitions, 395 flow. Second operand 5 states and 127 transitions. [2024-11-19 01:49:54,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 194 transitions, 1294 flow [2024-11-19 01:49:54,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 194 transitions, 1294 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:49:54,394 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 487 flow [2024-11-19 01:49:54,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=487, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2024-11-19 01:49:54,395 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-11-19 01:49:54,395 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 487 flow [2024-11-19 01:49:54,396 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 01:49:54,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:54,396 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 01:49:54,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:49:54,396 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 01:49:54,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:54,397 INFO L85 PathProgramCache]: Analyzing trace with hash -559709864, now seen corresponding path program 1 times [2024-11-19 01:49:54,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649726805] [2024-11-19 01:49:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:49:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:49:54,580 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 01:49:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:54,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649726805] [2024-11-19 01:49:54,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649726805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:54,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:49:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224667350] [2024-11-19 01:49:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:54,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:49:54,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:49:54,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:49:54,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-19 01:49:54,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:54,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:54,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-19 01:49:54,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:56,106 INFO L124 PetriNetUnfolderBase]: 18381/24480 cut-off events. [2024-11-19 01:49:56,106 INFO L125 PetriNetUnfolderBase]: For 44340/44662 co-relation queries the response was YES. [2024-11-19 01:49:56,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81422 conditions, 24480 events. 18381/24480 cut-off events. For 44340/44662 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 129428 event pairs, 5782 based on Foata normal form. 550/23667 useless extension candidates. Maximal degree in co-relation 60907. Up to 17863 conditions per place. [2024-11-19 01:49:56,473 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 97 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-19 01:49:56,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 112 transitions, 792 flow [2024-11-19 01:49:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:49:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:49:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-19 01:49:56,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-11-19 01:49:56,478 INFO L175 Difference]: Start difference. First operand has 70 places, 86 transitions, 487 flow. Second operand 3 states and 79 transitions. [2024-11-19 01:49:56,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 112 transitions, 792 flow [2024-11-19 01:49:56,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 112 transitions, 782 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:56,637 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 492 flow [2024-11-19 01:49:56,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2024-11-19 01:49:56,638 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-11-19 01:49:56,638 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 492 flow [2024-11-19 01:49:56,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:49:56,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:56,639 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 01:49:56,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:49:56,639 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 01:49:56,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash -118159431, now seen corresponding path program 4 times [2024-11-19 01:49:56,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:56,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229700642] [2024-11-19 01:49:56,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:49:56,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:56,655 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:49:56,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:56,699 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 01:49:56,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:56,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229700642] [2024-11-19 01:49:56,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229700642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:56,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:56,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357937039] [2024-11-19 01:49:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:56,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:56,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:56,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:56,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:49:56,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 492 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 01:49:56,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:56,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:49:56,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:49:58,831 INFO L124 PetriNetUnfolderBase]: 26272/34428 cut-off events. [2024-11-19 01:49:58,831 INFO L125 PetriNetUnfolderBase]: For 56952/57104 co-relation queries the response was YES. [2024-11-19 01:49:58,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116390 conditions, 34428 events. 26272/34428 cut-off events. For 56952/57104 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 183432 event pairs, 9112 based on Foata normal form. 282/33104 useless extension candidates. Maximal degree in co-relation 89167. Up to 17919 conditions per place. [2024-11-19 01:49:59,241 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 174 selfloop transitions, 20 changer transitions 0/203 dead transitions. [2024-11-19 01:49:59,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 203 transitions, 1471 flow [2024-11-19 01:49:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:49:59,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:49:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-19 01:49:59,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-19 01:49:59,243 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 492 flow. Second operand 5 states and 127 transitions. [2024-11-19 01:49:59,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 203 transitions, 1471 flow [2024-11-19 01:49:59,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 203 transitions, 1462 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:49:59,507 INFO L231 Difference]: Finished difference. Result has 78 places, 100 transitions, 697 flow [2024-11-19 01:49:59,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=697, PETRI_PLACES=78, PETRI_TRANSITIONS=100} [2024-11-19 01:49:59,508 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 34 predicate places. [2024-11-19 01:49:59,508 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 100 transitions, 697 flow [2024-11-19 01:49:59,508 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 01:49:59,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:49:59,508 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 01:49:59,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:49:59,509 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 01:49:59,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:49:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash 148545061, now seen corresponding path program 5 times [2024-11-19 01:49:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:49:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918346868] [2024-11-19 01:49:59,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:49:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:49:59,529 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:49:59,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:49:59,576 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 01:49:59,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:49:59,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918346868] [2024-11-19 01:49:59,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918346868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:49:59,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:49:59,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:49:59,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220121924] [2024-11-19 01:49:59,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:49:59,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:49:59,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:49:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:49:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:49:59,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:49:59,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 100 transitions, 697 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 01:49:59,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:49:59,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:49:59,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:02,146 INFO L124 PetriNetUnfolderBase]: 26977/35630 cut-off events. [2024-11-19 01:50:02,147 INFO L125 PetriNetUnfolderBase]: For 90540/91160 co-relation queries the response was YES. [2024-11-19 01:50:02,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129489 conditions, 35630 events. 26977/35630 cut-off events. For 90540/91160 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 195168 event pairs, 3132 based on Foata normal form. 712/34667 useless extension candidates. Maximal degree in co-relation 97726. Up to 12356 conditions per place. [2024-11-19 01:50:02,401 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 163 selfloop transitions, 46 changer transitions 0/218 dead transitions. [2024-11-19 01:50:02,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 218 transitions, 1646 flow [2024-11-19 01:50:02,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-11-19 01:50:02,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-19 01:50:02,402 INFO L175 Difference]: Start difference. First operand has 78 places, 100 transitions, 697 flow. Second operand 7 states and 176 transitions. [2024-11-19 01:50:02,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 218 transitions, 1646 flow [2024-11-19 01:50:02,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 218 transitions, 1616 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:02,772 INFO L231 Difference]: Finished difference. Result has 87 places, 113 transitions, 947 flow [2024-11-19 01:50:02,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=947, PETRI_PLACES=87, PETRI_TRANSITIONS=113} [2024-11-19 01:50:02,773 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 43 predicate places. [2024-11-19 01:50:02,773 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 113 transitions, 947 flow [2024-11-19 01:50:02,773 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 01:50:02,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:02,773 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 01:50:02,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:50:02,773 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 01:50:02,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:02,774 INFO L85 PathProgramCache]: Analyzing trace with hash -695207135, now seen corresponding path program 1 times [2024-11-19 01:50:02,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:02,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123131037] [2024-11-19 01:50:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:50:02,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:50:02,829 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 01:50:02,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:02,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123131037] [2024-11-19 01:50:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123131037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:02,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:02,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:50:02,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591264759] [2024-11-19 01:50:02,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:02,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:02,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:02,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:02,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:02,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:50:02,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 113 transitions, 947 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 01:50:02,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:02,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:50:02,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:05,470 INFO L124 PetriNetUnfolderBase]: 25544/33656 cut-off events. [2024-11-19 01:50:05,470 INFO L125 PetriNetUnfolderBase]: For 122427/123329 co-relation queries the response was YES. [2024-11-19 01:50:05,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131184 conditions, 33656 events. 25544/33656 cut-off events. For 122427/123329 co-relation queries the response was YES. Maximal size of possible extension queue 1183. Compared 178096 event pairs, 9405 based on Foata normal form. 86/32286 useless extension candidates. Maximal degree in co-relation 106811. Up to 21217 conditions per place. [2024-11-19 01:50:05,706 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 143 selfloop transitions, 29 changer transitions 0/176 dead transitions. [2024-11-19 01:50:05,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 1553 flow [2024-11-19 01:50:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-19 01:50:05,708 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-19 01:50:05,708 INFO L175 Difference]: Start difference. First operand has 87 places, 113 transitions, 947 flow. Second operand 5 states and 126 transitions. [2024-11-19 01:50:05,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 176 transitions, 1553 flow [2024-11-19 01:50:06,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 176 transitions, 1521 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 01:50:06,335 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 1011 flow [2024-11-19 01:50:06,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1011, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2024-11-19 01:50:06,336 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 48 predicate places. [2024-11-19 01:50:06,336 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 1011 flow [2024-11-19 01:50:06,336 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 01:50:06,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:06,342 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 01:50:06,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:50:06,342 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 01:50:06,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash -798344547, now seen corresponding path program 2 times [2024-11-19 01:50:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:06,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051176725] [2024-11-19 01:50:06,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:06,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:06,361 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:06,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:06,434 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 01:50:06,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:06,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051176725] [2024-11-19 01:50:06,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051176725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:50:06,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229162552] [2024-11-19 01:50:06,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:50:06,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:50:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:50:06,438 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 01:50:06,440 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 01:50:06,511 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:50:06,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:06,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:50:06,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:50:06,783 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 01:50:06,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:50:06,822 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 01:50:06,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229162552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:50:06,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:50:06,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-19 01:50:06,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077251442] [2024-11-19 01:50:06,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:50:06,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:50:06,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:50:06,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:50:06,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:50:06,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions, 1011 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 01:50:06,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:06,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:50:06,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:11,832 INFO L124 PetriNetUnfolderBase]: 49275/64759 cut-off events. [2024-11-19 01:50:11,833 INFO L125 PetriNetUnfolderBase]: For 249327/250952 co-relation queries the response was YES. [2024-11-19 01:50:12,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255140 conditions, 64759 events. 49275/64759 cut-off events. For 249327/250952 co-relation queries the response was YES. Maximal size of possible extension queue 2034. Compared 361482 event pairs, 2722 based on Foata normal form. 0/62515 useless extension candidates. Maximal degree in co-relation 213975. Up to 13733 conditions per place. [2024-11-19 01:50:12,314 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 730 selfloop transitions, 75 changer transitions 0/809 dead transitions. [2024-11-19 01:50:12,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 809 transitions, 9317 flow [2024-11-19 01:50:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:50:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:50:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 326 transitions. [2024-11-19 01:50:12,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5821428571428572 [2024-11-19 01:50:12,317 INFO L175 Difference]: Start difference. First operand has 92 places, 115 transitions, 1011 flow. Second operand 14 states and 326 transitions. [2024-11-19 01:50:12,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 809 transitions, 9317 flow [2024-11-19 01:50:13,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 809 transitions, 8987 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 01:50:13,926 INFO L231 Difference]: Finished difference. Result has 110 places, 178 transitions, 1548 flow [2024-11-19 01:50:13,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1548, PETRI_PLACES=110, PETRI_TRANSITIONS=178} [2024-11-19 01:50:13,927 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 66 predicate places. [2024-11-19 01:50:13,927 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 178 transitions, 1548 flow [2024-11-19 01:50:13,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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 01:50:13,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:13,928 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 01:50:13,942 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 01:50:14,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-19 01:50:14,133 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 01:50:14,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1245657953, now seen corresponding path program 6 times [2024-11-19 01:50:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:14,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555389871] [2024-11-19 01:50:14,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:50:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:14,145 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:50:14,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:14,191 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 01:50:14,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555389871] [2024-11-19 01:50:14,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555389871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:14,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:14,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:50:14,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637511646] [2024-11-19 01:50:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:14,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:50:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:50:14,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:50:14,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:50:14,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 178 transitions, 1548 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 01:50:14,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:14,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:50:14,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:20,310 INFO L124 PetriNetUnfolderBase]: 54983/72566 cut-off events. [2024-11-19 01:50:20,310 INFO L125 PetriNetUnfolderBase]: For 341140/341925 co-relation queries the response was YES. [2024-11-19 01:50:20,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325933 conditions, 72566 events. 54983/72566 cut-off events. For 341140/341925 co-relation queries the response was YES. Maximal size of possible extension queue 2234. Compared 413817 event pairs, 17036 based on Foata normal form. 120/72145 useless extension candidates. Maximal degree in co-relation 285920. Up to 35277 conditions per place. [2024-11-19 01:50:20,944 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 250 selfloop transitions, 49 changer transitions 0/321 dead transitions. [2024-11-19 01:50:20,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 321 transitions, 3492 flow [2024-11-19 01:50:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:50:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:50:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-19 01:50:20,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.605 [2024-11-19 01:50:20,945 INFO L175 Difference]: Start difference. First operand has 110 places, 178 transitions, 1548 flow. Second operand 5 states and 121 transitions. [2024-11-19 01:50:20,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 321 transitions, 3492 flow [2024-11-19 01:50:27,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 321 transitions, 3474 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-19 01:50:27,261 INFO L231 Difference]: Finished difference. Result has 116 places, 187 transitions, 1792 flow [2024-11-19 01:50:27,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1792, PETRI_PLACES=116, PETRI_TRANSITIONS=187} [2024-11-19 01:50:27,262 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-11-19 01:50:27,262 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 187 transitions, 1792 flow [2024-11-19 01:50:27,263 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 01:50:27,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:50:27,263 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 01:50:27,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:50:27,263 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 01:50:27,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:50:27,264 INFO L85 PathProgramCache]: Analyzing trace with hash -523173095, now seen corresponding path program 3 times [2024-11-19 01:50:27,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:50:27,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155456355] [2024-11-19 01:50:27,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:50:27,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:50:27,274 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:50:27,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:50:27,331 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 01:50:27,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:50:27,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155456355] [2024-11-19 01:50:27,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155456355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:50:27,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:50:27,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:50:27,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959204750] [2024-11-19 01:50:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:50:27,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:50:27,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:50:27,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:50:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:50:27,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-19 01:50:27,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 187 transitions, 1792 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 01:50:27,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:50:27,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-19 01:50:27,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:50:34,304 INFO L124 PetriNetUnfolderBase]: 63401/83799 cut-off events. [2024-11-19 01:50:34,304 INFO L125 PetriNetUnfolderBase]: For 388975/391110 co-relation queries the response was YES. [2024-11-19 01:50:34,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375407 conditions, 83799 events. 63401/83799 cut-off events. For 388975/391110 co-relation queries the response was YES. Maximal size of possible extension queue 2775. Compared 490787 event pairs, 8708 based on Foata normal form. 1605/85093 useless extension candidates. Maximal degree in co-relation 312323. Up to 26656 conditions per place. [2024-11-19 01:50:35,522 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 350 selfloop transitions, 98 changer transitions 9/461 dead transitions. [2024-11-19 01:50:35,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 461 transitions, 5229 flow [2024-11-19 01:50:35,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:50:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:50:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-11-19 01:50:35,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-11-19 01:50:35,524 INFO L175 Difference]: Start difference. First operand has 116 places, 187 transitions, 1792 flow. Second operand 7 states and 179 transitions. [2024-11-19 01:50:35,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 461 transitions, 5229 flow