./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.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 b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:37:49,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:37:49,271 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:37:49,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:37:49,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:37:49,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:37:49,316 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:37:49,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:37:49,317 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:37:49,317 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:37:49,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:37:49,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:37:49,320 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:37:49,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:37:49,323 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:37:49,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:37:49,324 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:37:49,324 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:37:49,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:37:49,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:37:49,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:37:49,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:37:49,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:37:49,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:37:49,330 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:37:49,330 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:37:49,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:37:49,331 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:37:49,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:37:49,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:37:49,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:37:49,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:37:49,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:37:49,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:37:49,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:37:49,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:37:49,334 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:37:49,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:37:49,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:37:49,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:37:49,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:37:49,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:37:49,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c [2024-11-20 09:37:49,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:37:49,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:37:49,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:37:49,599 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:37:49,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:37:49,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-20 09:37:51,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:37:51,261 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:37:51,263 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2024-11-20 09:37:51,270 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39563c5ef/bbd232789aec4e6896cc9663b98be37b/FLAGec354fbd6 [2024-11-20 09:37:51,285 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39563c5ef/bbd232789aec4e6896cc9663b98be37b [2024-11-20 09:37:51,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:37:51,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:37:51,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:37:51,289 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:37:51,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:37:51,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a60630d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51, skipping insertion in model container [2024-11-20 09:37:51,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:37:51,575 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/parallel-barrier.wvr.c[3418,3431] [2024-11-20 09:37:51,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:37:51,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:37:51,625 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/parallel-barrier.wvr.c[3418,3431] [2024-11-20 09:37:51,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:37:51,642 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:37:51,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51 WrapperNode [2024-11-20 09:37:51,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:37:51,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:37:51,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:37:51,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:37:51,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,659 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,683 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 210 [2024-11-20 09:37:51,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:37:51,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:37:51,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:37:51,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:37:51,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,717 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]. [2024-11-20 09:37:51,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,723 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:37:51,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:37:51,739 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:37:51,739 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:37:51,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (1/1) ... [2024-11-20 09:37:51,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:37:51,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:37:51,777 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) [2024-11-20 09:37:51,784 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 [2024-11-20 09:37:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:37:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:37:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:37:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:37:51,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:37:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:37:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:37:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-20 09:37:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-20 09:37:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:37:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-20 09:37:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-20 09:37:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-20 09:37:51,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-20 09:37:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:37:51,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:37:51,838 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:37:51,969 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:37:51,973 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:37:52,290 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:37:52,291 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:37:52,493 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:37:52,494 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 09:37:52,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:52 BoogieIcfgContainer [2024-11-20 09:37:52,495 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:37:52,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:37:52,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:37:52,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:37:52,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:37:51" (1/3) ... [2024-11-20 09:37:52,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5270f159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:37:52, skipping insertion in model container [2024-11-20 09:37:52,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:37:51" (2/3) ... [2024-11-20 09:37:52,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5270f159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:37:52, skipping insertion in model container [2024-11-20 09:37:52,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:37:52" (3/3) ... [2024-11-20 09:37:52,506 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-11-20 09:37:52,523 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:37:52,524 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:37:52,524 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:37:52,655 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-11-20 09:37:52,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 82 transitions, 230 flow [2024-11-20 09:37:52,757 INFO L124 PetriNetUnfolderBase]: 4/70 cut-off events. [2024-11-20 09:37:52,758 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 09:37:52,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 70 events. 4/70 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2024-11-20 09:37:52,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 82 transitions, 230 flow [2024-11-20 09:37:52,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 69 transitions, 186 flow [2024-11-20 09:37:52,776 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:37:52,782 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;@75f38eff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:37:52,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-20 09:37:52,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:37:52,809 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2024-11-20 09:37:52,809 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-20 09:37:52,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:52,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:52,810 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-20 09:37:52,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1393916505, now seen corresponding path program 1 times [2024-11-20 09:37:52,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:52,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500781574] [2024-11-20 09:37:52,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:52,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:53,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:53,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500781574] [2024-11-20 09:37:53,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500781574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:53,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:53,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:37:53,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202165863] [2024-11-20 09:37:53,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:53,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:37:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:37:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:37:53,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-20 09:37:53,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:37:53,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:53,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-20 09:37:53,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:55,917 INFO L124 PetriNetUnfolderBase]: 14053/19607 cut-off events. [2024-11-20 09:37:55,918 INFO L125 PetriNetUnfolderBase]: For 1988/1988 co-relation queries the response was YES. [2024-11-20 09:37:55,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41191 conditions, 19607 events. 14053/19607 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 111288 event pairs, 8277 based on Foata normal form. 480/19128 useless extension candidates. Maximal degree in co-relation 40794. Up to 13270 conditions per place. [2024-11-20 09:37:56,109 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 67 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-11-20 09:37:56,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 391 flow [2024-11-20 09:37:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:37:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:37:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-20 09:37:56,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5697674418604651 [2024-11-20 09:37:56,125 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 186 flow. Second operand 3 states and 147 transitions. [2024-11-20 09:37:56,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 391 flow [2024-11-20 09:37:56,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 345 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-20 09:37:56,239 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2024-11-20 09:37:56,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-20 09:37:56,247 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2024-11-20 09:37:56,247 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2024-11-20 09:37:56,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:37:56,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:56,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:56,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:37:56,249 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-20 09:37:56,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1117834938, now seen corresponding path program 1 times [2024-11-20 09:37:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:56,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495106168] [2024-11-20 09:37:56,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:56,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:56,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:56,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:56,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495106168] [2024-11-20 09:37:56,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495106168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:56,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:56,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:37:56,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350232880] [2024-11-20 09:37:56,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:56,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:37:56,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:56,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:37:56,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:37:56,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-20 09:37:56,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:37:56,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:56,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-20 09:37:56,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:37:58,373 INFO L124 PetriNetUnfolderBase]: 13081/19085 cut-off events. [2024-11-20 09:37:58,374 INFO L125 PetriNetUnfolderBase]: For 1234/1234 co-relation queries the response was YES. [2024-11-20 09:37:58,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37939 conditions, 19085 events. 13081/19085 cut-off events. For 1234/1234 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 118255 event pairs, 7989 based on Foata normal form. 316/18251 useless extension candidates. Maximal degree in co-relation 16196. Up to 13117 conditions per place. [2024-11-20 09:37:58,495 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 68 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2024-11-20 09:37:58,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 91 transitions, 369 flow [2024-11-20 09:37:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:37:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:37:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-11-20 09:37:58,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-11-20 09:37:58,499 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 148 transitions. [2024-11-20 09:37:58,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 91 transitions, 369 flow [2024-11-20 09:37:58,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:37:58,505 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2024-11-20 09:37:58,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-11-20 09:37:58,507 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2024-11-20 09:37:58,507 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2024-11-20 09:37:58,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:37:58,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:37:58,507 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:37:58,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:37:58,508 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-20 09:37:58,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:37:58,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1579026690, now seen corresponding path program 2 times [2024-11-20 09:37:58,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:37:58,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562603303] [2024-11-20 09:37:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:37:58,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:37:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:37:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:37:58,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:37:58,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562603303] [2024-11-20 09:37:58,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562603303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:37:58,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:37:58,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:37:58,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833619290] [2024-11-20 09:37:58,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:37:58,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:37:58,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:37:58,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:37:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:37:58,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-20 09:37:58,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:37:58,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:37:58,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-20 09:37:58,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:00,152 INFO L124 PetriNetUnfolderBase]: 11919/17063 cut-off events. [2024-11-20 09:38:00,152 INFO L125 PetriNetUnfolderBase]: For 1688/1716 co-relation queries the response was YES. [2024-11-20 09:38:00,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35062 conditions, 17063 events. 11919/17063 cut-off events. For 1688/1716 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 99863 event pairs, 7037 based on Foata normal form. 348/16362 useless extension candidates. Maximal degree in co-relation 12583. Up to 11081 conditions per place. [2024-11-20 09:38:00,255 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 69 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2024-11-20 09:38:00,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 92 transitions, 379 flow [2024-11-20 09:38:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:00,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-20 09:38:00,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5775193798449613 [2024-11-20 09:38:00,261 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 3 states and 149 transitions. [2024-11-20 09:38:00,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 92 transitions, 379 flow [2024-11-20 09:38:00,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 369 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:38:00,267 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 180 flow [2024-11-20 09:38:00,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-11-20 09:38:00,268 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, -7 predicate places. [2024-11-20 09:38:00,270 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 180 flow [2024-11-20 09:38:00,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:38:00,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:00,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:00,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:38:00,271 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-20 09:38:00,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1751838118, now seen corresponding path program 3 times [2024-11-20 09:38:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:00,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248193367] [2024-11-20 09:38:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:00,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:01,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248193367] [2024-11-20 09:38:01,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248193367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:01,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:01,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-20 09:38:01,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076451745] [2024-11-20 09:38:01,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:01,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 09:38:01,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:01,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 09:38:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2024-11-20 09:38:01,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-11-20 09:38:01,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 180 flow. Second operand has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 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) [2024-11-20 09:38:01,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:01,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-11-20 09:38:01,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:09,462 INFO L124 PetriNetUnfolderBase]: 57138/76185 cut-off events. [2024-11-20 09:38:09,462 INFO L125 PetriNetUnfolderBase]: For 9138/9138 co-relation queries the response was YES. [2024-11-20 09:38:09,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159492 conditions, 76185 events. 57138/76185 cut-off events. For 9138/9138 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 416243 event pairs, 5441 based on Foata normal form. 1/73356 useless extension candidates. Maximal degree in co-relation 63161. Up to 36443 conditions per place. [2024-11-20 09:38:09,929 INFO L140 encePairwiseOnDemand]: 64/86 looper letters, 521 selfloop transitions, 200 changer transitions 20/751 dead transitions. [2024-11-20 09:38:09,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 751 transitions, 3271 flow [2024-11-20 09:38:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-20 09:38:09,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-20 09:38:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1654 transitions. [2024-11-20 09:38:09,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33741330069359443 [2024-11-20 09:38:09,939 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 180 flow. Second operand 57 states and 1654 transitions. [2024-11-20 09:38:09,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 751 transitions, 3271 flow [2024-11-20 09:38:10,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 751 transitions, 3235 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:38:10,164 INFO L231 Difference]: Finished difference. Result has 158 places, 292 transitions, 1380 flow [2024-11-20 09:38:10,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=1380, PETRI_PLACES=158, PETRI_TRANSITIONS=292} [2024-11-20 09:38:10,167 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 74 predicate places. [2024-11-20 09:38:10,167 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 292 transitions, 1380 flow [2024-11-20 09:38:10,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 18.75) internal successors, (375), 20 states have internal predecessors, (375), 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) [2024-11-20 09:38:10,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:10,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:10,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:38:10,168 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-20 09:38:10,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:10,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1986151880, now seen corresponding path program 4 times [2024-11-20 09:38:10,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:10,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555650436] [2024-11-20 09:38:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:10,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555650436] [2024-11-20 09:38:10,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555650436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:10,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:10,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:38:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032042809] [2024-11-20 09:38:10,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:10,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:10,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:10,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:10,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:10,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 86 [2024-11-20 09:38:10,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 292 transitions, 1380 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:38:10,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:10,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 86 [2024-11-20 09:38:10,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:14,205 INFO L124 PetriNetUnfolderBase]: 27704/40051 cut-off events. [2024-11-20 09:38:14,206 INFO L125 PetriNetUnfolderBase]: For 86602/87398 co-relation queries the response was YES. [2024-11-20 09:38:14,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113412 conditions, 40051 events. 27704/40051 cut-off events. For 86602/87398 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 256052 event pairs, 13088 based on Foata normal form. 1406/38659 useless extension candidates. Maximal degree in co-relation 113367. Up to 26051 conditions per place. [2024-11-20 09:38:15,010 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 140 selfloop transitions, 4 changer transitions 0/300 dead transitions. [2024-11-20 09:38:15,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 300 transitions, 1723 flow [2024-11-20 09:38:15,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-11-20 09:38:15,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5658914728682171 [2024-11-20 09:38:15,019 INFO L175 Difference]: Start difference. First operand has 158 places, 292 transitions, 1380 flow. Second operand 3 states and 146 transitions. [2024-11-20 09:38:15,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 300 transitions, 1723 flow [2024-11-20 09:38:15,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 300 transitions, 1709 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:15,372 INFO L231 Difference]: Finished difference. Result has 159 places, 274 transitions, 1318 flow [2024-11-20 09:38:15,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1318, PETRI_PLACES=159, PETRI_TRANSITIONS=274} [2024-11-20 09:38:15,376 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 75 predicate places. [2024-11-20 09:38:15,376 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 274 transitions, 1318 flow [2024-11-20 09:38:15,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2024-11-20 09:38:15,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:15,377 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:15,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:38:15,377 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-20 09:38:15,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:15,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1718060114, now seen corresponding path program 5 times [2024-11-20 09:38:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:15,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138940363] [2024-11-20 09:38:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:15,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:16,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:16,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138940363] [2024-11-20 09:38:16,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138940363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:16,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:16,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-20 09:38:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393834875] [2024-11-20 09:38:16,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:16,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 09:38:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:16,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 09:38:16,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-11-20 09:38:16,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-11-20 09:38:16,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 274 transitions, 1318 flow. Second operand has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 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) [2024-11-20 09:38:16,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:16,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-11-20 09:38:16,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:27,470 INFO L124 PetriNetUnfolderBase]: 62334/83742 cut-off events. [2024-11-20 09:38:27,470 INFO L125 PetriNetUnfolderBase]: For 207310/207310 co-relation queries the response was YES. [2024-11-20 09:38:27,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252906 conditions, 83742 events. 62334/83742 cut-off events. For 207310/207310 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 463185 event pairs, 7556 based on Foata normal form. 1/80421 useless extension candidates. Maximal degree in co-relation 164424. Up to 45689 conditions per place. [2024-11-20 09:38:28,228 INFO L140 encePairwiseOnDemand]: 62/86 looper letters, 866 selfloop transitions, 266 changer transitions 32/1174 dead transitions. [2024-11-20 09:38:28,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1174 transitions, 6780 flow [2024-11-20 09:38:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-20 09:38:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-20 09:38:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 2056 transitions. [2024-11-20 09:38:28,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3415282392026578 [2024-11-20 09:38:28,239 INFO L175 Difference]: Start difference. First operand has 159 places, 274 transitions, 1318 flow. Second operand 70 states and 2056 transitions. [2024-11-20 09:38:28,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1174 transitions, 6780 flow [2024-11-20 09:38:29,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1174 transitions, 6740 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 09:38:29,482 INFO L231 Difference]: Finished difference. Result has 251 places, 525 transitions, 3470 flow [2024-11-20 09:38:29,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=3470, PETRI_PLACES=251, PETRI_TRANSITIONS=525} [2024-11-20 09:38:29,485 INFO L277 CegarLoopForPetriNet]: 84 programPoint places, 167 predicate places. [2024-11-20 09:38:29,486 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 525 transitions, 3470 flow [2024-11-20 09:38:29,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 18.5) internal successors, (407), 22 states have internal predecessors, (407), 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) [2024-11-20 09:38:29,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:29,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:29,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:38:29,487 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-20 09:38:29,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash 206728982, now seen corresponding path program 6 times [2024-11-20 09:38:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:29,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260830787] [2024-11-20 09:38:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:30,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260830787] [2024-11-20 09:38:30,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260830787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:30,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:30,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-20 09:38:30,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018572166] [2024-11-20 09:38:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:30,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 09:38:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 09:38:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-11-20 09:38:30,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 86 [2024-11-20 09:38:30,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 525 transitions, 3470 flow. Second operand has 21 states, 21 states have (on average 18.61904761904762) internal successors, (391), 21 states have internal predecessors, (391), 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) [2024-11-20 09:38:30,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:30,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 86 [2024-11-20 09:38:30,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand