./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/popl20-difference-det.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/popl20-difference-det.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:40:39,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:40:39,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:40:39,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:40:39,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:40:39,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:40:39,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:40:39,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:40:39,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:40:39,328 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:40:39,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:40:39,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:40:39,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:40:39,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:40:39,333 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:40:39,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:40:39,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:40:39,334 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:40:39,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:40:39,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:40:39,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:40:39,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:40:39,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:40:39,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:40:39,341 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:40:39,341 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:40:39,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:40:39,341 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:40:39,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:40:39,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:40:39,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:40:39,342 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:40:39,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:40:39,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:40:39,343 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:40:39,344 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:40:39,344 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:40:39,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:40:39,345 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:40:39,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:40:39,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:40:39,346 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:40:39,346 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-20 09:40:39,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:40:39,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:40:39,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:40:39,623 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:40:39,624 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:40:39,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-20 09:40:41,027 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:40:41,237 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:40:41,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-20 09:40:41,245 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91942a006/983337e2bdf54f2c96df2f5198ab7f0f/FLAGe3b8c45ec [2024-11-20 09:40:41,258 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91942a006/983337e2bdf54f2c96df2f5198ab7f0f [2024-11-20 09:40:41,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:40:41,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:40:41,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:40:41,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:40:41,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:40:41,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c40782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41, skipping insertion in model container [2024-11-20 09:40:41,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,293 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:40:41,473 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-20 09:40:41,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:40:41,485 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:40:41,505 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c[2247,2260] [2024-11-20 09:40:41,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:40:41,525 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:40:41,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41 WrapperNode [2024-11-20 09:40:41,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:40:41,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:40:41,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:40:41,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:40:41,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,578 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 99 [2024-11-20 09:40:41,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:40:41,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:40:41,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:40:41,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:40:41,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,640 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 09:40:41,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:40:41,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:40:41,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:40:41,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:40:41,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (1/1) ... [2024-11-20 09:40:41,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:40:41,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:41,694 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 09:40:41,697 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 09:40:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:40:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:40:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:40:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:40:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:40:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:40:41,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:40:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-20 09:40:41,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-20 09:40:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:40:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:40:41,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:40:41,743 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 09:40:41,828 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:40:41,830 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:40:42,036 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:40:42,036 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:40:42,225 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:40:42,227 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-20 09:40:42,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:40:42 BoogieIcfgContainer [2024-11-20 09:40:42,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:40:42,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:40:42,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:40:42,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:40:42,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:40:41" (1/3) ... [2024-11-20 09:40:42,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffa620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:40:42, skipping insertion in model container [2024-11-20 09:40:42,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:40:41" (2/3) ... [2024-11-20 09:40:42,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffa620d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:40:42, skipping insertion in model container [2024-11-20 09:40:42,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:40:42" (3/3) ... [2024-11-20 09:40:42,240 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-20 09:40:42,255 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:40:42,255 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:40:42,256 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:40:42,313 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-20 09:40:42,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-20 09:40:42,375 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-20 09:40:42,378 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 09:40:42,381 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. [2024-11-20 09:40:42,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-20 09:40:42,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-20 09:40:42,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:40:42,401 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;@3708b427, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:40:42,402 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-20 09:40:42,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:40:42,418 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-20 09:40:42,418 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 09:40:42,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:42,419 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] [2024-11-20 09:40:42,419 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)] === [2024-11-20 09:40:42,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash 419504288, now seen corresponding path program 1 times [2024-11-20 09:40:42,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:42,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858304235] [2024-11-20 09:40:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:42,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:42,754 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 09:40:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858304235] [2024-11-20 09:40:42,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858304235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:42,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:42,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:40:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038931833] [2024-11-20 09:40:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:42,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:40:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:42,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:40:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:40:42,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-20 09:40:42,793 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) [2024-11-20 09:40:42,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:42,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-20 09:40:42,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:43,460 INFO L124 PetriNetUnfolderBase]: 4206/5690 cut-off events. [2024-11-20 09:40:43,461 INFO L125 PetriNetUnfolderBase]: For 473/473 co-relation queries the response was YES. [2024-11-20 09:40:43,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11678 conditions, 5690 events. 4206/5690 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24102 event pairs, 1080 based on Foata normal form. 1/5300 useless extension candidates. Maximal degree in co-relation 10315. Up to 4714 conditions per place. [2024-11-20 09:40:43,502 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 48 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-20 09:40:43,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 263 flow [2024-11-20 09:40:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:40:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:40:43,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-20 09:40:43,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-11-20 09:40:43,515 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 77 transitions. [2024-11-20 09:40:43,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 263 flow [2024-11-20 09:40:43,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 233 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-20 09:40:43,525 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-20 09:40:43,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-20 09:40:43,530 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-20 09:40:43,531 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-20 09:40:43,531 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) [2024-11-20 09:40:43,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:43,531 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] [2024-11-20 09:40:43,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:40:43,532 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)] === [2024-11-20 09:40:43,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1938485262, now seen corresponding path program 1 times [2024-11-20 09:40:43,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:43,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051782935] [2024-11-20 09:40:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:43,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051782935] [2024-11-20 09:40:43,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051782935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:43,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:43,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:40:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952842419] [2024-11-20 09:40:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:43,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:40:43,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-20 09:40:43,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:40:43,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:43,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-20 09:40:43,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:44,617 INFO L124 PetriNetUnfolderBase]: 8890/11757 cut-off events. [2024-11-20 09:40:44,618 INFO L125 PetriNetUnfolderBase]: For 1383/1408 co-relation queries the response was YES. [2024-11-20 09:40:44,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26035 conditions, 11757 events. 8890/11757 cut-off events. For 1383/1408 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 55838 event pairs, 2934 based on Foata normal form. 0/11130 useless extension candidates. Maximal degree in co-relation 3736. Up to 6812 conditions per place. [2024-11-20 09:40:44,675 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 89 selfloop transitions, 9 changer transitions 1/101 dead transitions. [2024-11-20 09:40:44,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 101 transitions, 464 flow [2024-11-20 09:40:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:40:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:40:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-20 09:40:44,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-20 09:40:44,678 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 125 transitions. [2024-11-20 09:40:44,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 101 transitions, 464 flow [2024-11-20 09:40:44,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 101 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:40:44,683 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 156 flow [2024-11-20 09:40:44,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-20 09:40:44,684 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-20 09:40:44,684 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 156 flow [2024-11-20 09:40:44,684 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) [2024-11-20 09:40:44,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:44,685 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] [2024-11-20 09:40:44,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:40:44,685 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)] === [2024-11-20 09:40:44,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash 725134442, now seen corresponding path program 2 times [2024-11-20 09:40:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:44,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212764731] [2024-11-20 09:40:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:44,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212764731] [2024-11-20 09:40:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212764731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:44,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076830904] [2024-11-20 09:40:44,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:40:44,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:44,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:44,835 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) [2024-11-20 09:40:44,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:40:44,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:40:44,915 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:40:44,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 09:40:44,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:40:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:45,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:40:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076830904] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:40:45,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:40:45,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-20 09:40:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719402646] [2024-11-20 09:40:45,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:40:45,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 09:40:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 09:40:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 09:40:45,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-20 09:40:45,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:40:45,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:45,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-20 09:40:45,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:46,687 INFO L124 PetriNetUnfolderBase]: 15902/20779 cut-off events. [2024-11-20 09:40:46,688 INFO L125 PetriNetUnfolderBase]: For 6700/6700 co-relation queries the response was YES. [2024-11-20 09:40:46,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53356 conditions, 20779 events. 15902/20779 cut-off events. For 6700/6700 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 100699 event pairs, 1195 based on Foata normal form. 354/21133 useless extension candidates. Maximal degree in co-relation 27004. Up to 3779 conditions per place. [2024-11-20 09:40:46,872 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 245 selfloop transitions, 35 changer transitions 1/282 dead transitions. [2024-11-20 09:40:46,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 282 transitions, 1380 flow [2024-11-20 09:40:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 09:40:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 09:40:46,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 338 transitions. [2024-11-20 09:40:46,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-11-20 09:40:46,877 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 156 flow. Second operand 14 states and 338 transitions. [2024-11-20 09:40:46,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 282 transitions, 1380 flow [2024-11-20 09:40:46,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 282 transitions, 1380 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:40:46,892 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 389 flow [2024-11-20 09:40:46,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=389, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2024-11-20 09:40:46,893 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-20 09:40:46,894 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 389 flow [2024-11-20 09:40:46,894 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) [2024-11-20 09:40:46,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:46,894 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] [2024-11-20 09:40:46,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:40:47,095 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 [2024-11-20 09:40:47,096 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)] === [2024-11-20 09:40:47,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:47,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1244700002, now seen corresponding path program 1 times [2024-11-20 09:40:47,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:47,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408336558] [2024-11-20 09:40:47,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:47,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:47,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:47,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408336558] [2024-11-20 09:40:47,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408336558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:47,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:47,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:40:47,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981650488] [2024-11-20 09:40:47,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:47,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:47,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:40:47,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-20 09:40:47,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:40:47,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:47,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-20 09:40:47,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:48,476 INFO L124 PetriNetUnfolderBase]: 13851/18340 cut-off events. [2024-11-20 09:40:48,477 INFO L125 PetriNetUnfolderBase]: For 21244/21244 co-relation queries the response was YES. [2024-11-20 09:40:48,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55514 conditions, 18340 events. 13851/18340 cut-off events. For 21244/21244 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 91058 event pairs, 4183 based on Foata normal form. 36/18373 useless extension candidates. Maximal degree in co-relation 49455. Up to 9229 conditions per place. [2024-11-20 09:40:48,650 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 101 selfloop transitions, 12 changer transitions 15/132 dead transitions. [2024-11-20 09:40:48,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 824 flow [2024-11-20 09:40:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:40:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:40:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-20 09:40:48,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-20 09:40:48,652 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 389 flow. Second operand 5 states and 126 transitions. [2024-11-20 09:40:48,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 824 flow [2024-11-20 09:40:48,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 132 transitions, 791 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-11-20 09:40:48,906 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 394 flow [2024-11-20 09:40:48,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2024-11-20 09:40:48,906 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-11-20 09:40:48,907 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 394 flow [2024-11-20 09:40:48,907 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) [2024-11-20 09:40:48,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:48,907 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] [2024-11-20 09:40:48,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:40:48,907 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)] === [2024-11-20 09:40:48,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:48,908 INFO L85 PathProgramCache]: Analyzing trace with hash -411913122, now seen corresponding path program 3 times [2024-11-20 09:40:48,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:48,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226447240] [2024-11-20 09:40:48,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:48,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:48,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226447240] [2024-11-20 09:40:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226447240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:40:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290560350] [2024-11-20 09:40:48,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 09:40:48,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:40:48,981 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) [2024-11-20 09:40:48,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:40:49,038 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 09:40:49,038 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:40:49,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 09:40:49,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:40:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:49,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:40:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:49,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290560350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:40:49,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:40:49,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-20 09:40:49,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773243721] [2024-11-20 09:40:49,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:40:49,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 09:40:49,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:49,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 09:40:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-20 09:40:49,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-20 09:40:49,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:40:49,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:49,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-20 09:40:49,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:50,875 INFO L124 PetriNetUnfolderBase]: 22518/29285 cut-off events. [2024-11-20 09:40:50,875 INFO L125 PetriNetUnfolderBase]: For 42913/42913 co-relation queries the response was YES. [2024-11-20 09:40:50,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88459 conditions, 29285 events. 22518/29285 cut-off events. For 42913/42913 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 140675 event pairs, 4743 based on Foata normal form. 438/29723 useless extension candidates. Maximal degree in co-relation 72610. Up to 9338 conditions per place. [2024-11-20 09:40:51,014 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 156 selfloop transitions, 46 changer transitions 0/203 dead transitions. [2024-11-20 09:40:51,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 203 transitions, 1291 flow [2024-11-20 09:40:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:40:51,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:40:51,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-11-20 09:40:51,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-11-20 09:40:51,017 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 394 flow. Second operand 8 states and 193 transitions. [2024-11-20 09:40:51,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 203 transitions, 1291 flow [2024-11-20 09:40:51,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 203 transitions, 1250 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-20 09:40:51,389 INFO L231 Difference]: Finished difference. Result has 77 places, 98 transitions, 686 flow [2024-11-20 09:40:51,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=77, PETRI_TRANSITIONS=98} [2024-11-20 09:40:51,390 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-11-20 09:40:51,391 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 98 transitions, 686 flow [2024-11-20 09:40:51,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:40:51,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:51,392 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] [2024-11-20 09:40:51,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 09:40:51,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:40:51,597 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)] === [2024-11-20 09:40:51,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:51,598 INFO L85 PathProgramCache]: Analyzing trace with hash -151783974, now seen corresponding path program 4 times [2024-11-20 09:40:51,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:51,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282519425] [2024-11-20 09:40:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:51,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:51,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:51,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282519425] [2024-11-20 09:40:51,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282519425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:51,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:40:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457219215] [2024-11-20 09:40:51,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:51,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:40:51,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-20 09:40:51,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 686 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) [2024-11-20 09:40:51,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:51,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-20 09:40:51,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:53,977 INFO L124 PetriNetUnfolderBase]: 21351/28348 cut-off events. [2024-11-20 09:40:53,977 INFO L125 PetriNetUnfolderBase]: For 52148/52301 co-relation queries the response was YES. [2024-11-20 09:40:54,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92620 conditions, 28348 events. 21351/28348 cut-off events. For 52148/52301 co-relation queries the response was YES. Maximal size of possible extension queue 1058. Compared 147316 event pairs, 7442 based on Foata normal form. 73/28319 useless extension candidates. Maximal degree in co-relation 72953. Up to 13272 conditions per place. [2024-11-20 09:40:54,165 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 110 selfloop transitions, 19 changer transitions 10/157 dead transitions. [2024-11-20 09:40:54,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 157 transitions, 1196 flow [2024-11-20 09:40:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:40:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:40:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-20 09:40:54,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-11-20 09:40:54,166 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 686 flow. Second operand 5 states and 118 transitions. [2024-11-20 09:40:54,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 157 transitions, 1196 flow [2024-11-20 09:40:54,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 157 transitions, 1174 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-20 09:40:54,590 INFO L231 Difference]: Finished difference. Result has 83 places, 98 transitions, 711 flow [2024-11-20 09:40:54,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=711, PETRI_PLACES=83, PETRI_TRANSITIONS=98} [2024-11-20 09:40:54,593 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 39 predicate places. [2024-11-20 09:40:54,593 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 98 transitions, 711 flow [2024-11-20 09:40:54,593 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) [2024-11-20 09:40:54,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:54,594 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] [2024-11-20 09:40:54,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:40:54,594 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)] === [2024-11-20 09:40:54,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:54,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1062235910, now seen corresponding path program 2 times [2024-11-20 09:40:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:54,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251463072] [2024-11-20 09:40:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:54,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:54,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251463072] [2024-11-20 09:40:54,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251463072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:54,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:40:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992231790] [2024-11-20 09:40:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:54,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:40:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:40:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:40:54,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-20 09:40:54,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 98 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:40:54,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:54,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-20 09:40:54,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:40:56,860 INFO L124 PetriNetUnfolderBase]: 22260/29501 cut-off events. [2024-11-20 09:40:56,861 INFO L125 PetriNetUnfolderBase]: For 54319/54659 co-relation queries the response was YES. [2024-11-20 09:40:56,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96312 conditions, 29501 events. 22260/29501 cut-off events. For 54319/54659 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 155238 event pairs, 2670 based on Foata normal form. 240/29737 useless extension candidates. Maximal degree in co-relation 86414. Up to 10004 conditions per place. [2024-11-20 09:40:57,172 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 160 selfloop transitions, 39 changer transitions 1/205 dead transitions. [2024-11-20 09:40:57,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 205 transitions, 1510 flow [2024-11-20 09:40:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:40:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:40:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-11-20 09:40:57,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-20 09:40:57,174 INFO L175 Difference]: Start difference. First operand has 83 places, 98 transitions, 711 flow. Second operand 7 states and 176 transitions. [2024-11-20 09:40:57,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 205 transitions, 1510 flow [2024-11-20 09:40:57,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 205 transitions, 1465 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-20 09:40:57,890 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 842 flow [2024-11-20 09:40:57,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=842, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-11-20 09:40:57,891 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2024-11-20 09:40:57,891 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 842 flow [2024-11-20 09:40:57,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:40:57,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:40:57,894 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] [2024-11-20 09:40:57,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:40:57,894 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)] === [2024-11-20 09:40:57,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:40:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1472110488, now seen corresponding path program 5 times [2024-11-20 09:40:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:40:57,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357067383] [2024-11-20 09:40:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:40:57,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:40:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:40:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:40:57,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:40:57,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357067383] [2024-11-20 09:40:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357067383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:40:57,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:40:57,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:40:57,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347971900] [2024-11-20 09:40:57,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:40:57,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:40:57,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:40:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:40:57,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:40:57,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-20 09:40:57,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 842 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:40:57,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:40:57,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-20 09:40:57,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:00,270 INFO L124 PetriNetUnfolderBase]: 26337/34366 cut-off events. [2024-11-20 09:41:00,270 INFO L125 PetriNetUnfolderBase]: For 82464/82464 co-relation queries the response was YES. [2024-11-20 09:41:00,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115287 conditions, 34366 events. 26337/34366 cut-off events. For 82464/82464 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 172218 event pairs, 10209 based on Foata normal form. 168/34534 useless extension candidates. Maximal degree in co-relation 105330. Up to 22083 conditions per place. [2024-11-20 09:41:00,812 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 127 selfloop transitions, 28 changer transitions 1/157 dead transitions. [2024-11-20 09:41:00,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 157 transitions, 1299 flow [2024-11-20 09:41:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:41:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:41:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-20 09:41:00,817 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-20 09:41:00,817 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 842 flow. Second operand 5 states and 125 transitions. [2024-11-20 09:41:00,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 157 transitions, 1299 flow [2024-11-20 09:41:01,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 157 transitions, 1260 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-20 09:41:01,296 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 855 flow [2024-11-20 09:41:01,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=855, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2024-11-20 09:41:01,297 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-11-20 09:41:01,298 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 855 flow [2024-11-20 09:41:01,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:41:01,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:01,299 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] [2024-11-20 09:41:01,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:41:01,299 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)] === [2024-11-20 09:41:01,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:01,299 INFO L85 PathProgramCache]: Analyzing trace with hash 842298878, now seen corresponding path program 3 times [2024-11-20 09:41:01,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175667091] [2024-11-20 09:41:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:01,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:01,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:01,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175667091] [2024-11-20 09:41:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175667091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:01,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:01,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:41:01,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816909074] [2024-11-20 09:41:01,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:01,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:41:01,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:01,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:41:01,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:41:01,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-20 09:41:01,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 855 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:41:01,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:01,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-20 09:41:01,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:03,971 INFO L124 PetriNetUnfolderBase]: 27114/35359 cut-off events. [2024-11-20 09:41:03,971 INFO L125 PetriNetUnfolderBase]: For 89057/89057 co-relation queries the response was YES. [2024-11-20 09:41:04,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118638 conditions, 35359 events. 27114/35359 cut-off events. For 89057/89057 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 177451 event pairs, 10209 based on Foata normal form. 240/35599 useless extension candidates. Maximal degree in co-relation 109161. Up to 22083 conditions per place. [2024-11-20 09:41:04,139 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 142 selfloop transitions, 30 changer transitions 0/173 dead transitions. [2024-11-20 09:41:04,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1409 flow [2024-11-20 09:41:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:41:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:41:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-11-20 09:41:04,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5958333333333333 [2024-11-20 09:41:04,141 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 855 flow. Second operand 6 states and 143 transitions. [2024-11-20 09:41:04,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1409 flow [2024-11-20 09:41:04,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 173 transitions, 1347 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-20 09:41:04,564 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 886 flow [2024-11-20 09:41:04,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=886, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2024-11-20 09:41:04,566 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 47 predicate places. [2024-11-20 09:41:04,566 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 886 flow [2024-11-20 09:41:04,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:41:04,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:04,567 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] [2024-11-20 09:41:04,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:41:04,569 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)] === [2024-11-20 09:41:04,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash -914660432, now seen corresponding path program 6 times [2024-11-20 09:41:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:04,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922008271] [2024-11-20 09:41:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:04,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:04,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922008271] [2024-11-20 09:41:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922008271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714675888] [2024-11-20 09:41:04,675 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:41:04,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:04,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:04,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:04,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:41:04,764 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-20 09:41:04,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:41:04,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 09:41:04,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:04,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:04,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714675888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:04,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:04,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-20 09:41:04,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583500376] [2024-11-20 09:41:04,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:04,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 09:41:04,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 09:41:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-20 09:41:04,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-20 09:41:04,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 886 flow. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 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 09:41:04,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:04,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-20 09:41:04,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:08,128 INFO L124 PetriNetUnfolderBase]: 31829/41604 cut-off events. [2024-11-20 09:41:08,128 INFO L125 PetriNetUnfolderBase]: For 87302/87302 co-relation queries the response was YES. [2024-11-20 09:41:08,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137826 conditions, 41604 events. 31829/41604 cut-off events. For 87302/87302 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 216182 event pairs, 2741 based on Foata normal form. 270/41874 useless extension candidates. Maximal degree in co-relation 126736. Up to 8142 conditions per place. [2024-11-20 09:41:08,710 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 259 selfloop transitions, 73 changer transitions 1/334 dead transitions. [2024-11-20 09:41:08,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 334 transitions, 2249 flow [2024-11-20 09:41:08,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 09:41:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 09:41:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2024-11-20 09:41:08,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5983333333333334 [2024-11-20 09:41:08,712 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 886 flow. Second operand 15 states and 359 transitions. [2024-11-20 09:41:08,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 334 transitions, 2249 flow [2024-11-20 09:41:09,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 334 transitions, 2193 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-20 09:41:09,250 INFO L231 Difference]: Finished difference. Result has 105 places, 118 transitions, 1120 flow [2024-11-20 09:41:09,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1120, PETRI_PLACES=105, PETRI_TRANSITIONS=118} [2024-11-20 09:41:09,250 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 61 predicate places. [2024-11-20 09:41:09,251 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 118 transitions, 1120 flow [2024-11-20 09:41:09,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 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 09:41:09,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:09,251 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] [2024-11-20 09:41:09,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 09:41:09,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:09,455 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)] === [2024-11-20 09:41:09,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2143166858, now seen corresponding path program 4 times [2024-11-20 09:41:09,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:09,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514371151] [2024-11-20 09:41:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:09,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:09,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:09,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514371151] [2024-11-20 09:41:09,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514371151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:09,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:09,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:41:09,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213362472] [2024-11-20 09:41:09,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:09,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:41:09,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:09,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:41:09,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:41:09,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-20 09:41:09,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 118 transitions, 1120 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) [2024-11-20 09:41:09,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:09,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-20 09:41:09,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:12,193 INFO L124 PetriNetUnfolderBase]: 28172/37469 cut-off events. [2024-11-20 09:41:12,193 INFO L125 PetriNetUnfolderBase]: For 102822/102838 co-relation queries the response was YES. [2024-11-20 09:41:12,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130261 conditions, 37469 events. 28172/37469 cut-off events. For 102822/102838 co-relation queries the response was YES. Maximal size of possible extension queue 1395. Compared 204871 event pairs, 10367 based on Foata normal form. 36/37422 useless extension candidates. Maximal degree in co-relation 118691. Up to 24942 conditions per place. [2024-11-20 09:41:12,511 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 121 selfloop transitions, 24 changer transitions 10/165 dead transitions. [2024-11-20 09:41:12,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 1555 flow [2024-11-20 09:41:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:41:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:41:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-20 09:41:12,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.585 [2024-11-20 09:41:12,514 INFO L175 Difference]: Start difference. First operand has 105 places, 118 transitions, 1120 flow. Second operand 5 states and 117 transitions. [2024-11-20 09:41:12,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 1555 flow [2024-11-20 09:41:13,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 165 transitions, 1477 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-20 09:41:13,039 INFO L231 Difference]: Finished difference. Result has 103 places, 117 transitions, 1079 flow [2024-11-20 09:41:13,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1079, PETRI_PLACES=103, PETRI_TRANSITIONS=117} [2024-11-20 09:41:13,041 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-11-20 09:41:13,041 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 117 transitions, 1079 flow [2024-11-20 09:41:13,042 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) [2024-11-20 09:41:13,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:13,042 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] [2024-11-20 09:41:13,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 09:41:13,042 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:41:13,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:13,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1290618586, now seen corresponding path program 7 times [2024-11-20 09:41:13,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401572229] [2024-11-20 09:41:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:13,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:13,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:13,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401572229] [2024-11-20 09:41:13,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401572229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:13,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:13,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:41:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131316617] [2024-11-20 09:41:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:13,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:41:13,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:41:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:41:13,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-20 09:41:13,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 117 transitions, 1079 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) [2024-11-20 09:41:13,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:13,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-20 09:41:13,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:15,515 INFO L124 PetriNetUnfolderBase]: 27831/36798 cut-off events. [2024-11-20 09:41:15,515 INFO L125 PetriNetUnfolderBase]: For 116240/116779 co-relation queries the response was YES. [2024-11-20 09:41:15,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128446 conditions, 36798 events. 27831/36798 cut-off events. For 116240/116779 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 197643 event pairs, 9730 based on Foata normal form. 171/36652 useless extension candidates. Maximal degree in co-relation 106090. Up to 17970 conditions per place. [2024-11-20 09:41:16,010 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 106 selfloop transitions, 29 changer transitions 9/164 dead transitions. [2024-11-20 09:41:16,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 164 transitions, 1526 flow [2024-11-20 09:41:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:41:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:41:16,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-20 09:41:16,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-20 09:41:16,012 INFO L175 Difference]: Start difference. First operand has 103 places, 117 transitions, 1079 flow. Second operand 5 states and 114 transitions. [2024-11-20 09:41:16,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 164 transitions, 1526 flow [2024-11-20 09:41:16,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 164 transitions, 1474 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-20 09:41:16,800 INFO L231 Difference]: Finished difference. Result has 103 places, 116 transitions, 1084 flow [2024-11-20 09:41:16,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1084, PETRI_PLACES=103, PETRI_TRANSITIONS=116} [2024-11-20 09:41:16,802 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-11-20 09:41:16,802 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 116 transitions, 1084 flow [2024-11-20 09:41:16,803 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) [2024-11-20 09:41:16,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:16,803 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] [2024-11-20 09:41:16,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 09:41:16,803 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:41:16,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2063547054, now seen corresponding path program 5 times [2024-11-20 09:41:16,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:16,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736589744] [2024-11-20 09:41:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:16,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:16,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736589744] [2024-11-20 09:41:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736589744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:16,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:16,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:41:16,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699053948] [2024-11-20 09:41:16,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:16,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:41:16,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:41:16,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:41:16,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-20 09:41:16,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 116 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:41:16,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:16,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-20 09:41:16,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:19,926 INFO L124 PetriNetUnfolderBase]: 33812/44097 cut-off events. [2024-11-20 09:41:19,926 INFO L125 PetriNetUnfolderBase]: For 127296/127296 co-relation queries the response was YES. [2024-11-20 09:41:20,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152698 conditions, 44097 events. 33812/44097 cut-off events. For 127296/127296 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 226907 event pairs, 9972 based on Foata normal form. 240/44337 useless extension candidates. Maximal degree in co-relation 127933. Up to 19176 conditions per place. [2024-11-20 09:41:20,252 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 157 selfloop transitions, 36 changer transitions 1/195 dead transitions. [2024-11-20 09:41:20,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 195 transitions, 1771 flow [2024-11-20 09:41:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:41:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:41:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-11-20 09:41:20,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-20 09:41:20,254 INFO L175 Difference]: Start difference. First operand has 103 places, 116 transitions, 1084 flow. Second operand 6 states and 145 transitions. [2024-11-20 09:41:20,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 195 transitions, 1771 flow [2024-11-20 09:41:21,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 195 transitions, 1705 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-20 09:41:21,081 INFO L231 Difference]: Finished difference. Result has 104 places, 119 transitions, 1139 flow [2024-11-20 09:41:21,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1139, PETRI_PLACES=104, PETRI_TRANSITIONS=119} [2024-11-20 09:41:21,082 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 60 predicate places. [2024-11-20 09:41:21,082 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 119 transitions, 1139 flow [2024-11-20 09:41:21,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:41:21,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:21,082 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] [2024-11-20 09:41:21,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 09:41:21,083 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:41:21,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:21,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1672708670, now seen corresponding path program 6 times [2024-11-20 09:41:21,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:21,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78123560] [2024-11-20 09:41:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:21,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78123560] [2024-11-20 09:41:21,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78123560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:41:21,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:41:21,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:41:21,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960910257] [2024-11-20 09:41:21,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:41:21,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:41:21,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:41:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:41:21,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-20 09:41:21,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 119 transitions, 1139 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) [2024-11-20 09:41:21,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:21,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-20 09:41:21,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:23,862 INFO L124 PetriNetUnfolderBase]: 29668/39108 cut-off events. [2024-11-20 09:41:23,863 INFO L125 PetriNetUnfolderBase]: For 116425/116428 co-relation queries the response was YES. [2024-11-20 09:41:23,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135076 conditions, 39108 events. 29668/39108 cut-off events. For 116425/116428 co-relation queries the response was YES. Maximal size of possible extension queue 1446. Compared 207886 event pairs, 10989 based on Foata normal form. 36/39081 useless extension candidates. Maximal degree in co-relation 113002. Up to 20056 conditions per place. [2024-11-20 09:41:24,111 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 115 selfloop transitions, 28 changer transitions 10/164 dead transitions. [2024-11-20 09:41:24,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 164 transitions, 1566 flow [2024-11-20 09:41:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:41:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:41:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-11-20 09:41:24,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-20 09:41:24,112 INFO L175 Difference]: Start difference. First operand has 104 places, 119 transitions, 1139 flow. Second operand 5 states and 114 transitions. [2024-11-20 09:41:24,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 164 transitions, 1566 flow [2024-11-20 09:41:24,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 164 transitions, 1510 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-20 09:41:24,823 INFO L231 Difference]: Finished difference. Result has 106 places, 118 transitions, 1123 flow [2024-11-20 09:41:24,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1123, PETRI_PLACES=106, PETRI_TRANSITIONS=118} [2024-11-20 09:41:24,827 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 62 predicate places. [2024-11-20 09:41:24,827 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 118 transitions, 1123 flow [2024-11-20 09:41:24,827 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) [2024-11-20 09:41:24,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:41:24,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:41:24,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 09:41:24,828 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-20 09:41:24,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:41:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1030488090, now seen corresponding path program 1 times [2024-11-20 09:41:24,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:41:24,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233840193] [2024-11-20 09:41:24,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:24,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:41:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:41:24,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233840193] [2024-11-20 09:41:24,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233840193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:41:24,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111955621] [2024-11-20 09:41:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:41:24,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:41:24,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:41:24,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 09:41:24,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:41:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:41:24,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 09:41:24,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:41:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:41:25,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:41:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 09:41:25,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111955621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:41:25,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:41:25,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2024-11-20 09:41:25,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322787594] [2024-11-20 09:41:25,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:41:25,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 09:41:25,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:41:25,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 09:41:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 09:41:25,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-20 09:41:25,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 118 transitions, 1123 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:41:25,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:41:25,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-20 09:41:25,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:41:30,626 INFO L124 PetriNetUnfolderBase]: 54241/73628 cut-off events. [2024-11-20 09:41:30,626 INFO L125 PetriNetUnfolderBase]: For 265253/266350 co-relation queries the response was YES. [2024-11-20 09:41:30,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254553 conditions, 73628 events. 54241/73628 cut-off events. For 265253/266350 co-relation queries the response was YES. Maximal size of possible extension queue 2405. Compared 447484 event pairs, 7222 based on Foata normal form. 2084/75173 useless extension candidates. Maximal degree in co-relation 205458. Up to 32347 conditions per place. [2024-11-20 09:41:31,188 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 328 selfloop transitions, 20 changer transitions 4/382 dead transitions. [2024-11-20 09:41:31,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 382 transitions, 3994 flow [2024-11-20 09:41:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:41:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:41:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-11-20 09:41:31,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2024-11-20 09:41:31,194 INFO L175 Difference]: Start difference. First operand has 106 places, 118 transitions, 1123 flow. Second operand 7 states and 209 transitions. [2024-11-20 09:41:31,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 382 transitions, 3994 flow