./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/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/chl-word-symm.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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:08:08,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:08:08,862 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:08:08,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:08:08,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:08:08,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:08:08,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:08:08,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:08:08,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:08:08,889 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:08:08,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:08:08,889 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:08:08,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:08:08,890 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:08:08,890 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:08:08,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:08:08,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:08:08,891 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:08:08,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:08:08,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:08:08,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:08:08,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:08:08,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:08:08,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:08:08,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:08:08,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:08:08,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:08:08,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:08:08,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:08:08,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:08:08,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:08:08,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:08:08,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:08:08,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:08:08,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:08:08,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:08:08,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:08:08,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:08:08,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:08:08,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:08:08,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:08:08,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:08:08,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2024-10-13 07:08:09,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:08:09,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:08:09,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:08:09,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:08:09,126 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:08:09,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-10-13 07:08:10,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:08:10,571 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:08:10,571 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-10-13 07:08:10,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67cfd4cc8/a1616985d5c3492abf326c19604b929a/FLAG87de36212 [2024-10-13 07:08:10,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67cfd4cc8/a1616985d5c3492abf326c19604b929a [2024-10-13 07:08:10,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:08:10,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:08:10,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:08:10,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:08:10,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:08:10,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:10" (1/1) ... [2024-10-13 07:08:10,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e600e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:10, skipping insertion in model container [2024-10-13 07:08:10,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:10" (1/1) ... [2024-10-13 07:08:11,011 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:08:11,188 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2874,2887] [2024-10-13 07:08:11,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:08:11,203 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:08:11,219 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2874,2887] [2024-10-13 07:08:11,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:08:11,250 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:08:11,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11 WrapperNode [2024-10-13 07:08:11,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:08:11,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:08:11,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:08:11,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:08:11,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,299 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 123 [2024-10-13 07:08:11,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:08:11,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:08:11,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:08:11,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:08:11,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,312 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,323 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-13 07:08:11,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:08:11,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:08:11,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:08:11,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:08:11,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (1/1) ... [2024-10-13 07:08:11,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:08:11,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:11,376 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) [2024-10-13 07:08:11,379 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 [2024-10-13 07:08:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:08:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:08:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:08:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:08:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 07:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 07:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 07:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 07:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:08:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 07:08:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 07:08:11,424 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:08:11,514 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:08:11,516 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:08:11,761 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:08:11,762 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:08:11,976 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:08:11,976 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-13 07:08:11,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:11 BoogieIcfgContainer [2024-10-13 07:08:11,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:08:11,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:08:11,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:08:11,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:08:11,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:08:10" (1/3) ... [2024-10-13 07:08:11,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7152e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:11, skipping insertion in model container [2024-10-13 07:08:11,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:11" (2/3) ... [2024-10-13 07:08:11,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7152e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:11, skipping insertion in model container [2024-10-13 07:08:11,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:11" (3/3) ... [2024-10-13 07:08:11,985 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-10-13 07:08:11,998 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:08:11,998 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:08:11,998 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:08:12,040 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 07:08:12,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 34 transitions, 82 flow [2024-10-13 07:08:12,099 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2024-10-13 07:08:12,099 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:08:12,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 8/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-13 07:08:12,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 34 transitions, 82 flow [2024-10-13 07:08:12,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 31 transitions, 74 flow [2024-10-13 07:08:12,116 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:08:12,139 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;@267b1401, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:08:12,139 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 07:08:12,151 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:08:12,153 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2024-10-13 07:08:12,153 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:08:12,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:12,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:12,155 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:12,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1992990212, now seen corresponding path program 1 times [2024-10-13 07:08:12,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:12,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641667860] [2024-10-13 07:08:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:12,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:12,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:12,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641667860] [2024-10-13 07:08:12,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641667860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:12,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:12,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:08:12,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737319460] [2024-10-13 07:08:12,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:12,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:08:12,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:08:12,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:08:12,732 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:12,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:12,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:12,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:12,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:12,957 INFO L124 PetriNetUnfolderBase]: 271/440 cut-off events. [2024-10-13 07:08:12,958 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-13 07:08:12,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 440 events. 271/440 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1484 event pairs, 138 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 824. Up to 343 conditions per place. [2024-10-13 07:08:12,967 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 40 selfloop transitions, 1 changer transitions 7/49 dead transitions. [2024-10-13 07:08:12,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 218 flow [2024-10-13 07:08:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:08:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:08:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-10-13 07:08:12,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-10-13 07:08:12,981 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 74 flow. Second operand 4 states and 62 transitions. [2024-10-13 07:08:12,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 218 flow [2024-10-13 07:08:12,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:12,986 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 75 flow [2024-10-13 07:08:12,987 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-10-13 07:08:12,991 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-10-13 07:08:12,992 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 75 flow [2024-10-13 07:08:12,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:12,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:12,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:12,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:08:12,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:12,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash -837937516, now seen corresponding path program 2 times [2024-10-13 07:08:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:12,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224140686] [2024-10-13 07:08:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:13,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:13,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224140686] [2024-10-13 07:08:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224140686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:13,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:08:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513102654] [2024-10-13 07:08:13,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:13,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 07:08:13,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:13,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 07:08:13,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 07:08:13,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:13,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:13,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:13,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:13,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:13,399 INFO L124 PetriNetUnfolderBase]: 309/520 cut-off events. [2024-10-13 07:08:13,400 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-10-13 07:08:13,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 520 events. 309/520 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1927 event pairs, 174 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1090. Up to 403 conditions per place. [2024-10-13 07:08:13,405 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 40 selfloop transitions, 1 changer transitions 9/51 dead transitions. [2024-10-13 07:08:13,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 51 transitions, 225 flow [2024-10-13 07:08:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 07:08:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 07:08:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-13 07:08:13,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-10-13 07:08:13,408 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 75 flow. Second operand 4 states and 64 transitions. [2024-10-13 07:08:13,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 51 transitions, 225 flow [2024-10-13 07:08:13,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 219 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:13,411 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 81 flow [2024-10-13 07:08:13,414 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-10-13 07:08:13,415 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-10-13 07:08:13,415 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 81 flow [2024-10-13 07:08:13,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:13,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:13,415 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:13,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:08:13,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:13,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:13,416 INFO L85 PathProgramCache]: Analyzing trace with hash -840877155, now seen corresponding path program 1 times [2024-10-13 07:08:13,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:13,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342059711] [2024-10-13 07:08:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:13,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:13,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342059711] [2024-10-13 07:08:13,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342059711] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:13,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:13,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 07:08:13,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385327287] [2024-10-13 07:08:13,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:13,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:08:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:13,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:08:13,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:08:13,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:13,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:13,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:13,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:13,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:13,546 INFO L124 PetriNetUnfolderBase]: 223/370 cut-off events. [2024-10-13 07:08:13,546 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-10-13 07:08:13,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 370 events. 223/370 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1164 event pairs, 73 based on Foata normal form. 21/327 useless extension candidates. Maximal degree in co-relation 797. Up to 302 conditions per place. [2024-10-13 07:08:13,549 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 33 selfloop transitions, 2 changer transitions 5/41 dead transitions. [2024-10-13 07:08:13,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 41 transitions, 187 flow [2024-10-13 07:08:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:08:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:08:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-10-13 07:08:13,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:08:13,551 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 81 flow. Second operand 3 states and 51 transitions. [2024-10-13 07:08:13,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 41 transitions, 187 flow [2024-10-13 07:08:13,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 184 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:13,554 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2024-10-13 07:08:13,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2024-10-13 07:08:13,554 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-10-13 07:08:13,555 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2024-10-13 07:08:13,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:13,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:13,555 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:13,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:08:13,556 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:13,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1355277831, now seen corresponding path program 1 times [2024-10-13 07:08:13,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:13,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190580523] [2024-10-13 07:08:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:13,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:13,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:13,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190580523] [2024-10-13 07:08:13,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190580523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:13,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:13,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 07:08:13,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573218579] [2024-10-13 07:08:13,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:13,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:08:13,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:13,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:08:13,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:08:13,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:13,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:13,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:13,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:13,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:14,093 INFO L124 PetriNetUnfolderBase]: 507/833 cut-off events. [2024-10-13 07:08:14,093 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-10-13 07:08:14,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855 conditions, 833 events. 507/833 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3332 event pairs, 115 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 540. Up to 265 conditions per place. [2024-10-13 07:08:14,096 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 87 selfloop transitions, 14 changer transitions 1/103 dead transitions. [2024-10-13 07:08:14,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 103 transitions, 476 flow [2024-10-13 07:08:14,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 07:08:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 07:08:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-10-13 07:08:14,098 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4522058823529412 [2024-10-13 07:08:14,098 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 8 states and 123 transitions. [2024-10-13 07:08:14,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 103 transitions, 476 flow [2024-10-13 07:08:14,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 103 transitions, 452 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:14,100 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 168 flow [2024-10-13 07:08:14,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=168, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2024-10-13 07:08:14,101 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-10-13 07:08:14,101 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 168 flow [2024-10-13 07:08:14,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:14,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:14,101 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] [2024-10-13 07:08:14,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:08:14,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:14,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 535894153, now seen corresponding path program 1 times [2024-10-13 07:08:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:14,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788213370] [2024-10-13 07:08:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:14,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:14,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788213370] [2024-10-13 07:08:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788213370] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:14,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627641261] [2024-10-13 07:08:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:14,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:14,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:14,356 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) [2024-10-13 07:08:14,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:08:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:14,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 07:08:14,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:14,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:15,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627641261] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:15,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:15,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-10-13 07:08:15,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625210475] [2024-10-13 07:08:15,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:15,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:08:15,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:15,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:08:15,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2024-10-13 07:08:15,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:15,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 168 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:15,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:15,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:15,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:16,243 INFO L124 PetriNetUnfolderBase]: 1151/1915 cut-off events. [2024-10-13 07:08:16,243 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2024-10-13 07:08:16,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4751 conditions, 1915 events. 1151/1915 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9616 event pairs, 128 based on Foata normal form. 1/1740 useless extension candidates. Maximal degree in co-relation 2896. Up to 351 conditions per place. [2024-10-13 07:08:16,252 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 136 selfloop transitions, 46 changer transitions 7/190 dead transitions. [2024-10-13 07:08:16,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 190 transitions, 1002 flow [2024-10-13 07:08:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 07:08:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 07:08:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-10-13 07:08:16,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45475113122171945 [2024-10-13 07:08:16,254 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 168 flow. Second operand 13 states and 201 transitions. [2024-10-13 07:08:16,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 190 transitions, 1002 flow [2024-10-13 07:08:16,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 190 transitions, 998 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-13 07:08:16,258 INFO L231 Difference]: Finished difference. Result has 62 places, 78 transitions, 521 flow [2024-10-13 07:08:16,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=521, PETRI_PLACES=62, PETRI_TRANSITIONS=78} [2024-10-13 07:08:16,259 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-10-13 07:08:16,259 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 78 transitions, 521 flow [2024-10-13 07:08:16,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:16,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:16,259 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] [2024-10-13 07:08:16,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:08:16,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:16,464 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:16,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:16,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1211693247, now seen corresponding path program 2 times [2024-10-13 07:08:16,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:16,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367061261] [2024-10-13 07:08:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:16,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:16,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367061261] [2024-10-13 07:08:16,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367061261] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:16,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783166048] [2024-10-13 07:08:16,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:16,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:16,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:16,708 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) [2024-10-13 07:08:16,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:08:16,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:08:16,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:16,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:08:16,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:17,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:17,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783166048] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:17,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:17,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-10-13 07:08:17,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655528442] [2024-10-13 07:08:17,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:17,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:17,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:17,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:08:17,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:17,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 78 transitions, 521 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:17,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:17,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:17,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:17,297 INFO L124 PetriNetUnfolderBase]: 1146/1915 cut-off events. [2024-10-13 07:08:17,297 INFO L125 PetriNetUnfolderBase]: For 2413/2413 co-relation queries the response was YES. [2024-10-13 07:08:17,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5918 conditions, 1915 events. 1146/1915 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9587 event pairs, 173 based on Foata normal form. 1/1742 useless extension candidates. Maximal degree in co-relation 5869. Up to 1163 conditions per place. [2024-10-13 07:08:17,309 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 93 selfloop transitions, 41 changer transitions 7/142 dead transitions. [2024-10-13 07:08:17,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 142 transitions, 1037 flow [2024-10-13 07:08:17,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:08:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:08:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-10-13 07:08:17,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41830065359477125 [2024-10-13 07:08:17,311 INFO L175 Difference]: Start difference. First operand has 62 places, 78 transitions, 521 flow. Second operand 9 states and 128 transitions. [2024-10-13 07:08:17,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 142 transitions, 1037 flow [2024-10-13 07:08:17,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 142 transitions, 1028 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:17,323 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 701 flow [2024-10-13 07:08:17,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=701, PETRI_PLACES=71, PETRI_TRANSITIONS=86} [2024-10-13 07:08:17,324 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-10-13 07:08:17,325 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 701 flow [2024-10-13 07:08:17,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:17,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:17,326 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] [2024-10-13 07:08:17,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 07:08:17,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-13 07:08:17,530 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:17,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash 987669410, now seen corresponding path program 1 times [2024-10-13 07:08:17,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:17,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866339141] [2024-10-13 07:08:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:17,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:17,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:17,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866339141] [2024-10-13 07:08:17,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866339141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:17,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:17,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:08:17,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919727801] [2024-10-13 07:08:17,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:17,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:17,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:17,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:17,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 86 transitions, 701 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:17,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:17,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:17,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:17,842 INFO L124 PetriNetUnfolderBase]: 1151/1970 cut-off events. [2024-10-13 07:08:17,843 INFO L125 PetriNetUnfolderBase]: For 3874/3874 co-relation queries the response was YES. [2024-10-13 07:08:17,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6631 conditions, 1970 events. 1151/1970 cut-off events. For 3874/3874 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10256 event pairs, 663 based on Foata normal form. 0/1821 useless extension candidates. Maximal degree in co-relation 6574. Up to 1146 conditions per place. [2024-10-13 07:08:17,856 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 109 selfloop transitions, 12 changer transitions 7/129 dead transitions. [2024-10-13 07:08:17,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 129 transitions, 1192 flow [2024-10-13 07:08:17,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:08:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:08:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-10-13 07:08:17,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-10-13 07:08:17,858 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 701 flow. Second operand 6 states and 84 transitions. [2024-10-13 07:08:17,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 129 transitions, 1192 flow [2024-10-13 07:08:17,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 129 transitions, 1123 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:17,869 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 632 flow [2024-10-13 07:08:17,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=632, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-10-13 07:08:17,870 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-10-13 07:08:17,871 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 632 flow [2024-10-13 07:08:17,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:17,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:17,871 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] [2024-10-13 07:08:17,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:08:17,872 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:17,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash 351786427, now seen corresponding path program 1 times [2024-10-13 07:08:17,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:17,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650518172] [2024-10-13 07:08:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:17,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:18,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650518172] [2024-10-13 07:08:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650518172] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:18,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714251824] [2024-10-13 07:08:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:18,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:18,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:18,101 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) [2024-10-13 07:08:18,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:08:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:18,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 07:08:18,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:18,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:18,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714251824] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:18,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:18,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2024-10-13 07:08:18,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408720517] [2024-10-13 07:08:18,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:18,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:18,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:18,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-10-13 07:08:18,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:18,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:18,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:18,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:18,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:19,698 INFO L124 PetriNetUnfolderBase]: 1234/2116 cut-off events. [2024-10-13 07:08:19,699 INFO L125 PetriNetUnfolderBase]: For 4777/4777 co-relation queries the response was YES. [2024-10-13 07:08:19,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7188 conditions, 2116 events. 1234/2116 cut-off events. For 4777/4777 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11168 event pairs, 287 based on Foata normal form. 1/2000 useless extension candidates. Maximal degree in co-relation 5728. Up to 767 conditions per place. [2024-10-13 07:08:19,715 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 164 selfloop transitions, 42 changer transitions 9/216 dead transitions. [2024-10-13 07:08:19,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 216 transitions, 1655 flow [2024-10-13 07:08:19,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:08:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:08:19,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 216 transitions. [2024-10-13 07:08:19,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2024-10-13 07:08:19,717 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 632 flow. Second operand 14 states and 216 transitions. [2024-10-13 07:08:19,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 216 transitions, 1655 flow [2024-10-13 07:08:19,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 216 transitions, 1637 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:19,731 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 866 flow [2024-10-13 07:08:19,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=866, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2024-10-13 07:08:19,734 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-10-13 07:08:19,734 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 866 flow [2024-10-13 07:08:19,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:19,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:19,735 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] [2024-10-13 07:08:19,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:19,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:19,936 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:19,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:19,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1103325034, now seen corresponding path program 1 times [2024-10-13 07:08:19,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:19,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432727369] [2024-10-13 07:08:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:20,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432727369] [2024-10-13 07:08:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432727369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:20,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:08:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780717525] [2024-10-13 07:08:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:20,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:20,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:20,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 866 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:20,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:20,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:20,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:20,219 INFO L124 PetriNetUnfolderBase]: 986/1749 cut-off events. [2024-10-13 07:08:20,219 INFO L125 PetriNetUnfolderBase]: For 5591/5591 co-relation queries the response was YES. [2024-10-13 07:08:20,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6317 conditions, 1749 events. 986/1749 cut-off events. For 5591/5591 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9322 event pairs, 564 based on Foata normal form. 0/1690 useless extension candidates. Maximal degree in co-relation 6247. Up to 1146 conditions per place. [2024-10-13 07:08:20,228 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 89 selfloop transitions, 10 changer transitions 14/114 dead transitions. [2024-10-13 07:08:20,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 114 transitions, 1172 flow [2024-10-13 07:08:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:08:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:08:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-10-13 07:08:20,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37745098039215685 [2024-10-13 07:08:20,229 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 866 flow. Second operand 6 states and 77 transitions. [2024-10-13 07:08:20,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 114 transitions, 1172 flow [2024-10-13 07:08:20,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 114 transitions, 1079 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:20,243 INFO L231 Difference]: Finished difference. Result has 91 places, 79 transitions, 634 flow [2024-10-13 07:08:20,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=91, PETRI_TRANSITIONS=79} [2024-10-13 07:08:20,244 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-10-13 07:08:20,244 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 634 flow [2024-10-13 07:08:20,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:20,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:20,244 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] [2024-10-13 07:08:20,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 07:08:20,244 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:20,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:20,245 INFO L85 PathProgramCache]: Analyzing trace with hash 199085239, now seen corresponding path program 3 times [2024-10-13 07:08:20,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:20,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478602765] [2024-10-13 07:08:20,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:20,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:20,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478602765] [2024-10-13 07:08:20,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478602765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:20,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207325964] [2024-10-13 07:08:20,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:20,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:20,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:20,440 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) [2024-10-13 07:08:20,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:08:20,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:08:20,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:20,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:08:20,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:20,708 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:20,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207325964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:20,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:20,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-10-13 07:08:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226947098] [2024-10-13 07:08:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:20,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:20,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:08:20,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:20,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 634 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:20,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:20,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:20,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:20,977 INFO L124 PetriNetUnfolderBase]: 853/1475 cut-off events. [2024-10-13 07:08:20,978 INFO L125 PetriNetUnfolderBase]: For 4282/4282 co-relation queries the response was YES. [2024-10-13 07:08:20,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5390 conditions, 1475 events. 853/1475 cut-off events. For 4282/4282 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7311 event pairs, 184 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 5331. Up to 913 conditions per place. [2024-10-13 07:08:20,986 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 99 selfloop transitions, 30 changer transitions 7/137 dead transitions. [2024-10-13 07:08:20,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 137 transitions, 1127 flow [2024-10-13 07:08:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:08:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:08:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-10-13 07:08:20,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-10-13 07:08:20,988 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 634 flow. Second operand 9 states and 129 transitions. [2024-10-13 07:08:20,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 137 transitions, 1127 flow [2024-10-13 07:08:21,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 137 transitions, 1071 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-10-13 07:08:21,003 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 630 flow [2024-10-13 07:08:21,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=630, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-10-13 07:08:21,004 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-10-13 07:08:21,004 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 630 flow [2024-10-13 07:08:21,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:21,004 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] [2024-10-13 07:08:21,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 07:08:21,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:21,205 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:21,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:21,205 INFO L85 PathProgramCache]: Analyzing trace with hash 697496051, now seen corresponding path program 4 times [2024-10-13 07:08:21,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:21,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223612730] [2024-10-13 07:08:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:21,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223612730] [2024-10-13 07:08:21,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223612730] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149210758] [2024-10-13 07:08:21,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:21,365 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:21,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:08:21,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:21,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:21,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 07:08:21,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:21,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:21,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149210758] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:21,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:21,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-10-13 07:08:21,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510497861] [2024-10-13 07:08:21,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:21,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:08:21,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:21,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:08:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2024-10-13 07:08:21,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:21,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 630 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:22,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:22,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:22,446 INFO L124 PetriNetUnfolderBase]: 844/1453 cut-off events. [2024-10-13 07:08:22,446 INFO L125 PetriNetUnfolderBase]: For 3774/3774 co-relation queries the response was YES. [2024-10-13 07:08:22,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5236 conditions, 1453 events. 844/1453 cut-off events. For 3774/3774 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7122 event pairs, 183 based on Foata normal form. 1/1452 useless extension candidates. Maximal degree in co-relation 5184. Up to 439 conditions per place. [2024-10-13 07:08:22,455 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 121 selfloop transitions, 34 changer transitions 8/164 dead transitions. [2024-10-13 07:08:22,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 164 transitions, 1322 flow [2024-10-13 07:08:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:08:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:08:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 167 transitions. [2024-10-13 07:08:22,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40931372549019607 [2024-10-13 07:08:22,456 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 630 flow. Second operand 12 states and 167 transitions. [2024-10-13 07:08:22,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 164 transitions, 1322 flow [2024-10-13 07:08:22,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 164 transitions, 1254 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:22,468 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 660 flow [2024-10-13 07:08:22,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=660, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-10-13 07:08:22,468 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-10-13 07:08:22,469 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 660 flow [2024-10-13 07:08:22,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:22,469 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] [2024-10-13 07:08:22,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:22,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 07:08:22,674 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:22,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:22,674 INFO L85 PathProgramCache]: Analyzing trace with hash 621901887, now seen corresponding path program 5 times [2024-10-13 07:08:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:22,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775260039] [2024-10-13 07:08:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:22,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:22,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:22,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775260039] [2024-10-13 07:08:22,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775260039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:22,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203007423] [2024-10-13 07:08:22,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:22,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:22,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:22,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:22,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 07:08:22,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:22,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:22,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 07:08:22,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203007423] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:23,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:23,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-10-13 07:08:23,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539078919] [2024-10-13 07:08:23,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:23,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:08:23,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:23,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:08:23,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-10-13 07:08:23,613 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:23,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:23,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:23,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:24,289 INFO L124 PetriNetUnfolderBase]: 913/1595 cut-off events. [2024-10-13 07:08:24,290 INFO L125 PetriNetUnfolderBase]: For 4625/4625 co-relation queries the response was YES. [2024-10-13 07:08:24,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5794 conditions, 1595 events. 913/1595 cut-off events. For 4625/4625 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8053 event pairs, 174 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 5732. Up to 439 conditions per place. [2024-10-13 07:08:24,298 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 138 selfloop transitions, 38 changer transitions 9/186 dead transitions. [2024-10-13 07:08:24,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 186 transitions, 1500 flow [2024-10-13 07:08:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 07:08:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 07:08:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 192 transitions. [2024-10-13 07:08:24,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4343891402714932 [2024-10-13 07:08:24,302 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 660 flow. Second operand 13 states and 192 transitions. [2024-10-13 07:08:24,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 186 transitions, 1500 flow [2024-10-13 07:08:24,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 186 transitions, 1441 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-10-13 07:08:24,318 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 770 flow [2024-10-13 07:08:24,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=770, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-10-13 07:08:24,319 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-10-13 07:08:24,319 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 770 flow [2024-10-13 07:08:24,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:24,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:24,319 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] [2024-10-13 07:08:24,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 07:08:24,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:24,520 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:24,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1128295419, now seen corresponding path program 2 times [2024-10-13 07:08:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780381079] [2024-10-13 07:08:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:24,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780381079] [2024-10-13 07:08:24,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780381079] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747378254] [2024-10-13 07:08:24,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:24,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:24,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:24,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:24,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 07:08:24,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:08:24,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:24,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:08:24,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:24,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:24,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747378254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:24,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:24,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-13 07:08:24,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043790548] [2024-10-13 07:08:24,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:24,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:08:24,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:24,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:08:24,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:08:24,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:24,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 770 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:24,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:24,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:24,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:25,246 INFO L124 PetriNetUnfolderBase]: 909/1591 cut-off events. [2024-10-13 07:08:25,246 INFO L125 PetriNetUnfolderBase]: For 5399/5399 co-relation queries the response was YES. [2024-10-13 07:08:25,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5991 conditions, 1591 events. 909/1591 cut-off events. For 5399/5399 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8068 event pairs, 243 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 5926. Up to 1036 conditions per place. [2024-10-13 07:08:25,255 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 91 selfloop transitions, 27 changer transitions 11/130 dead transitions. [2024-10-13 07:08:25,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 130 transitions, 1250 flow [2024-10-13 07:08:25,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:08:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:08:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-10-13 07:08:25,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2024-10-13 07:08:25,256 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 770 flow. Second operand 9 states and 111 transitions. [2024-10-13 07:08:25,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 130 transitions, 1250 flow [2024-10-13 07:08:25,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 130 transitions, 1201 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:25,272 INFO L231 Difference]: Finished difference. Result has 106 places, 86 transitions, 830 flow [2024-10-13 07:08:25,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=830, PETRI_PLACES=106, PETRI_TRANSITIONS=86} [2024-10-13 07:08:25,272 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-10-13 07:08:25,273 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 86 transitions, 830 flow [2024-10-13 07:08:25,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:25,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:25,273 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] [2024-10-13 07:08:25,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 07:08:25,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:25,473 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:25,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash -593067301, now seen corresponding path program 6 times [2024-10-13 07:08:25,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:25,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047365472] [2024-10-13 07:08:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:25,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:25,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:25,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047365472] [2024-10-13 07:08:25,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047365472] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:25,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795399516] [2024-10-13 07:08:25,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:25,626 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:25,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 07:08:25,683 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 07:08:25,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:25,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:08:25,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:25,863 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:25,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795399516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:25,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:25,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-10-13 07:08:25,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076331479] [2024-10-13 07:08:25,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:25,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:25,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:25,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:25,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:08:25,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:25,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 86 transitions, 830 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:25,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:25,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:25,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:26,151 INFO L124 PetriNetUnfolderBase]: 883/1537 cut-off events. [2024-10-13 07:08:26,152 INFO L125 PetriNetUnfolderBase]: For 5277/5277 co-relation queries the response was YES. [2024-10-13 07:08:26,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6078 conditions, 1537 events. 883/1537 cut-off events. For 5277/5277 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7671 event pairs, 211 based on Foata normal form. 1/1536 useless extension candidates. Maximal degree in co-relation 5976. Up to 893 conditions per place. [2024-10-13 07:08:26,162 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 97 selfloop transitions, 32 changer transitions 8/138 dead transitions. [2024-10-13 07:08:26,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 138 transitions, 1313 flow [2024-10-13 07:08:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:08:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:08:26,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-10-13 07:08:26,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39869281045751637 [2024-10-13 07:08:26,163 INFO L175 Difference]: Start difference. First operand has 106 places, 86 transitions, 830 flow. Second operand 9 states and 122 transitions. [2024-10-13 07:08:26,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 138 transitions, 1313 flow [2024-10-13 07:08:26,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 1239 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-13 07:08:26,179 INFO L231 Difference]: Finished difference. Result has 109 places, 86 transitions, 826 flow [2024-10-13 07:08:26,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=826, PETRI_PLACES=109, PETRI_TRANSITIONS=86} [2024-10-13 07:08:26,180 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-10-13 07:08:26,180 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 86 transitions, 826 flow [2024-10-13 07:08:26,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:26,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:26,181 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] [2024-10-13 07:08:26,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 07:08:26,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 07:08:26,382 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:26,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1633684973, now seen corresponding path program 3 times [2024-10-13 07:08:26,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:26,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437425527] [2024-10-13 07:08:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:26,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:26,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:26,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437425527] [2024-10-13 07:08:26,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437425527] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:26,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898807000] [2024-10-13 07:08:26,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:26,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:26,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:26,534 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:26,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 07:08:26,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:08:26,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:26,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:08:26,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:26,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898807000] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:26,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:26,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-10-13 07:08:26,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080728037] [2024-10-13 07:08:26,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:26,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:08:26,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:26,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:08:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:08:26,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:26,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 86 transitions, 826 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:26,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:26,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:26,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:27,025 INFO L124 PetriNetUnfolderBase]: 874/1515 cut-off events. [2024-10-13 07:08:27,025 INFO L125 PetriNetUnfolderBase]: For 5351/5351 co-relation queries the response was YES. [2024-10-13 07:08:27,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 1515 events. 874/1515 cut-off events. For 5351/5351 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7548 event pairs, 228 based on Foata normal form. 1/1514 useless extension candidates. Maximal degree in co-relation 5850. Up to 968 conditions per place. [2024-10-13 07:08:27,032 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 85 selfloop transitions, 25 changer transitions 18/129 dead transitions. [2024-10-13 07:08:27,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 129 transitions, 1263 flow [2024-10-13 07:08:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:08:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:08:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-10-13 07:08:27,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3660130718954248 [2024-10-13 07:08:27,034 INFO L175 Difference]: Start difference. First operand has 109 places, 86 transitions, 826 flow. Second operand 9 states and 112 transitions. [2024-10-13 07:08:27,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 129 transitions, 1263 flow [2024-10-13 07:08:27,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 129 transitions, 1201 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:27,049 INFO L231 Difference]: Finished difference. Result has 110 places, 83 transitions, 796 flow [2024-10-13 07:08:27,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=796, PETRI_PLACES=110, PETRI_TRANSITIONS=83} [2024-10-13 07:08:27,049 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-10-13 07:08:27,049 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 83 transitions, 796 flow [2024-10-13 07:08:27,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:27,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:27,050 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] [2024-10-13 07:08:27,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 07:08:27,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 07:08:27,254 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:27,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:27,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1135274161, now seen corresponding path program 4 times [2024-10-13 07:08:27,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:27,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556937614] [2024-10-13 07:08:27,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:27,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:27,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:27,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556937614] [2024-10-13 07:08:27,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556937614] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:27,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829484659] [2024-10-13 07:08:27,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:27,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:27,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:27,408 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:27,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 07:08:27,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:27,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:27,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-13 07:08:27,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:27,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829484659] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:28,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:28,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9, 10] total 27 [2024-10-13 07:08:28,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171338893] [2024-10-13 07:08:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:28,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:08:28,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:28,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:08:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2024-10-13 07:08:28,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:28,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 83 transitions, 796 flow. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:28,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:28,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:28,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:28,630 INFO L124 PetriNetUnfolderBase]: 1030/1785 cut-off events. [2024-10-13 07:08:28,630 INFO L125 PetriNetUnfolderBase]: For 6394/6394 co-relation queries the response was YES. [2024-10-13 07:08:28,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 1785 events. 1030/1785 cut-off events. For 6394/6394 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9185 event pairs, 177 based on Foata normal form. 2/1785 useless extension candidates. Maximal degree in co-relation 6791. Up to 612 conditions per place. [2024-10-13 07:08:28,639 INFO L140 encePairwiseOnDemand]: 19/34 looper letters, 154 selfloop transitions, 54 changer transitions 12/221 dead transitions. [2024-10-13 07:08:28,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 221 transitions, 1990 flow [2024-10-13 07:08:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 07:08:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 07:08:28,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 220 transitions. [2024-10-13 07:08:28,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-10-13 07:08:28,640 INFO L175 Difference]: Start difference. First operand has 110 places, 83 transitions, 796 flow. Second operand 15 states and 220 transitions. [2024-10-13 07:08:28,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 221 transitions, 1990 flow [2024-10-13 07:08:28,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 221 transitions, 1887 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-10-13 07:08:28,657 INFO L231 Difference]: Finished difference. Result has 120 places, 102 transitions, 1068 flow [2024-10-13 07:08:28,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1068, PETRI_PLACES=120, PETRI_TRANSITIONS=102} [2024-10-13 07:08:28,658 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-10-13 07:08:28,658 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 102 transitions, 1068 flow [2024-10-13 07:08:28,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:28,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:28,658 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] [2024-10-13 07:08:28,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:28,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 07:08:28,864 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:28,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash -620497227, now seen corresponding path program 5 times [2024-10-13 07:08:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:28,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323866833] [2024-10-13 07:08:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:29,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:29,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323866833] [2024-10-13 07:08:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323866833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:29,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012492894] [2024-10-13 07:08:29,041 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:29,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:29,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:29,042 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:29,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 07:08:29,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:29,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:29,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 07:08:29,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:29,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:29,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012492894] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:29,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:29,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 23 [2024-10-13 07:08:29,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517335224] [2024-10-13 07:08:29,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:29,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:29,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:29,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-10-13 07:08:29,739 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:29,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 102 transitions, 1068 flow. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:29,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:29,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:29,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:30,196 INFO L124 PetriNetUnfolderBase]: 997/1717 cut-off events. [2024-10-13 07:08:30,196 INFO L125 PetriNetUnfolderBase]: For 8534/8534 co-relation queries the response was YES. [2024-10-13 07:08:30,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 1717 events. 997/1717 cut-off events. For 8534/8534 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8634 event pairs, 259 based on Foata normal form. 1/1716 useless extension candidates. Maximal degree in co-relation 7390. Up to 1120 conditions per place. [2024-10-13 07:08:30,206 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 93 selfloop transitions, 30 changer transitions 21/145 dead transitions. [2024-10-13 07:08:30,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 145 transitions, 1537 flow [2024-10-13 07:08:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:08:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:08:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-10-13 07:08:30,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30637254901960786 [2024-10-13 07:08:30,207 INFO L175 Difference]: Start difference. First operand has 120 places, 102 transitions, 1068 flow. Second operand 12 states and 125 transitions. [2024-10-13 07:08:30,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 145 transitions, 1537 flow [2024-10-13 07:08:30,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 145 transitions, 1381 flow, removed 29 selfloop flow, removed 12 redundant places. [2024-10-13 07:08:30,232 INFO L231 Difference]: Finished difference. Result has 119 places, 95 transitions, 894 flow [2024-10-13 07:08:30,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=894, PETRI_PLACES=119, PETRI_TRANSITIONS=95} [2024-10-13 07:08:30,233 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-10-13 07:08:30,233 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 95 transitions, 894 flow [2024-10-13 07:08:30,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:30,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:30,233 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] [2024-10-13 07:08:30,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 07:08:30,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 07:08:30,438 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:30,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:30,438 INFO L85 PathProgramCache]: Analyzing trace with hash 401838977, now seen corresponding path program 6 times [2024-10-13 07:08:30,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:30,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652576379] [2024-10-13 07:08:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:30,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652576379] [2024-10-13 07:08:30,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652576379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007748041] [2024-10-13 07:08:30,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:30,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:30,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:30,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:30,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 07:08:30,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 07:08:30,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:30,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 07:08:30,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:30,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:30,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007748041] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:30,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-10-13 07:08:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870172209] [2024-10-13 07:08:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:30,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:08:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:08:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:08:30,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:30,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 95 transitions, 894 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:30,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:30,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:30,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:31,032 INFO L124 PetriNetUnfolderBase]: 953/1630 cut-off events. [2024-10-13 07:08:31,032 INFO L125 PetriNetUnfolderBase]: For 6908/6908 co-relation queries the response was YES. [2024-10-13 07:08:31,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 1630 events. 953/1630 cut-off events. For 6908/6908 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8017 event pairs, 259 based on Foata normal form. 1/1629 useless extension candidates. Maximal degree in co-relation 6803. Up to 1120 conditions per place. [2024-10-13 07:08:31,041 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 73 selfloop transitions, 25 changer transitions 25/124 dead transitions. [2024-10-13 07:08:31,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 124 transitions, 1251 flow [2024-10-13 07:08:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:08:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:08:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-10-13 07:08:31,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2024-10-13 07:08:31,042 INFO L175 Difference]: Start difference. First operand has 119 places, 95 transitions, 894 flow. Second operand 9 states and 99 transitions. [2024-10-13 07:08:31,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 124 transitions, 1251 flow [2024-10-13 07:08:31,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 124 transitions, 1178 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-10-13 07:08:31,059 INFO L231 Difference]: Finished difference. Result has 114 places, 87 transitions, 817 flow [2024-10-13 07:08:31,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=817, PETRI_PLACES=114, PETRI_TRANSITIONS=87} [2024-10-13 07:08:31,060 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-10-13 07:08:31,060 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 87 transitions, 817 flow [2024-10-13 07:08:31,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:31,060 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] [2024-10-13 07:08:31,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:31,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 07:08:31,261 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:31,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:31,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1038818068, now seen corresponding path program 1 times [2024-10-13 07:08:31,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:31,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655749263] [2024-10-13 07:08:31,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:31,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:31,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:31,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655749263] [2024-10-13 07:08:31,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655749263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:31,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:31,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105785283] [2024-10-13 07:08:31,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:31,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:31,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:31,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:31,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:31,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:31,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 87 transitions, 817 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:31,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:31,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:31,460 INFO L124 PetriNetUnfolderBase]: 710/1227 cut-off events. [2024-10-13 07:08:31,460 INFO L125 PetriNetUnfolderBase]: For 5318/5318 co-relation queries the response was YES. [2024-10-13 07:08:31,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5213 conditions, 1227 events. 710/1227 cut-off events. For 5318/5318 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5741 event pairs, 420 based on Foata normal form. 38/1264 useless extension candidates. Maximal degree in co-relation 5160. Up to 719 conditions per place. [2024-10-13 07:08:31,468 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 89 selfloop transitions, 9 changer transitions 8/107 dead transitions. [2024-10-13 07:08:31,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 107 transitions, 1107 flow [2024-10-13 07:08:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-10-13 07:08:31,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45294117647058824 [2024-10-13 07:08:31,470 INFO L175 Difference]: Start difference. First operand has 114 places, 87 transitions, 817 flow. Second operand 5 states and 77 transitions. [2024-10-13 07:08:31,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 107 transitions, 1107 flow [2024-10-13 07:08:31,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 107 transitions, 953 flow, removed 26 selfloop flow, removed 13 redundant places. [2024-10-13 07:08:31,486 INFO L231 Difference]: Finished difference. Result has 92 places, 73 transitions, 558 flow [2024-10-13 07:08:31,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=92, PETRI_TRANSITIONS=73} [2024-10-13 07:08:31,486 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-10-13 07:08:31,486 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 73 transitions, 558 flow [2024-10-13 07:08:31,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:31,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:31,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-13 07:08:31,488 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:31,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:31,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1004186794, now seen corresponding path program 1 times [2024-10-13 07:08:31,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:31,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506973649] [2024-10-13 07:08:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:31,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:31,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:31,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506973649] [2024-10-13 07:08:31,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506973649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:31,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:31,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:31,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978002181] [2024-10-13 07:08:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:31,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:31,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:31,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:31,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 73 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:31,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:31,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:31,668 INFO L124 PetriNetUnfolderBase]: 536/942 cut-off events. [2024-10-13 07:08:31,668 INFO L125 PetriNetUnfolderBase]: For 2608/2608 co-relation queries the response was YES. [2024-10-13 07:08:31,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3601 conditions, 942 events. 536/942 cut-off events. For 2608/2608 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4179 event pairs, 323 based on Foata normal form. 0/905 useless extension candidates. Maximal degree in co-relation 3571. Up to 719 conditions per place. [2024-10-13 07:08:31,672 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 51 selfloop transitions, 2 changer transitions 28/82 dead transitions. [2024-10-13 07:08:31,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 82 transitions, 712 flow [2024-10-13 07:08:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-10-13 07:08:31,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38823529411764707 [2024-10-13 07:08:31,673 INFO L175 Difference]: Start difference. First operand has 92 places, 73 transitions, 558 flow. Second operand 5 states and 66 transitions. [2024-10-13 07:08:31,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 82 transitions, 712 flow [2024-10-13 07:08:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 676 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:31,678 INFO L231 Difference]: Finished difference. Result has 85 places, 54 transitions, 339 flow [2024-10-13 07:08:31,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=85, PETRI_TRANSITIONS=54} [2024-10-13 07:08:31,678 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-10-13 07:08:31,679 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 54 transitions, 339 flow [2024-10-13 07:08:31,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:31,679 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] [2024-10-13 07:08:31,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-13 07:08:31,679 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:31,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:31,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1735061807, now seen corresponding path program 1 times [2024-10-13 07:08:31,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:31,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64038766] [2024-10-13 07:08:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:31,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:31,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64038766] [2024-10-13 07:08:31,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64038766] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:31,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490321865] [2024-10-13 07:08:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:31,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:31,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:31,757 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:31,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 07:08:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:31,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:08:31,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:31,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:31,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490321865] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:31,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:31,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-10-13 07:08:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099781126] [2024-10-13 07:08:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:31,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:08:31,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:08:31,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:31,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:31,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 54 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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) [2024-10-13 07:08:31,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:31,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:31,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:32,014 INFO L124 PetriNetUnfolderBase]: 497/843 cut-off events. [2024-10-13 07:08:32,014 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2024-10-13 07:08:32,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3250 conditions, 843 events. 497/843 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3454 event pairs, 231 based on Foata normal form. 36/878 useless extension candidates. Maximal degree in co-relation 3221. Up to 547 conditions per place. [2024-10-13 07:08:32,017 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 67 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2024-10-13 07:08:32,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 77 transitions, 648 flow [2024-10-13 07:08:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:32,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2024-10-13 07:08:32,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2689075630252101 [2024-10-13 07:08:32,018 INFO L175 Difference]: Start difference. First operand has 85 places, 54 transitions, 339 flow. Second operand 7 states and 64 transitions. [2024-10-13 07:08:32,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 77 transitions, 648 flow [2024-10-13 07:08:32,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 77 transitions, 616 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-10-13 07:08:32,022 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 364 flow [2024-10-13 07:08:32,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-10-13 07:08:32,023 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-10-13 07:08:32,023 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 364 flow [2024-10-13 07:08:32,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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) [2024-10-13 07:08:32,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:32,023 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] [2024-10-13 07:08:32,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:32,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 07:08:32,224 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:32,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash -304506486, now seen corresponding path program 1 times [2024-10-13 07:08:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550051256] [2024-10-13 07:08:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:32,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550051256] [2024-10-13 07:08:32,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550051256] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:32,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424994437] [2024-10-13 07:08:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:32,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:32,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:32,314 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:32,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 07:08:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:32,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 07:08:32,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424994437] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:32,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:32,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-10-13 07:08:32,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999555793] [2024-10-13 07:08:32,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:32,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:08:32,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:32,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:08:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:32,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:32,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:32,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:32,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:32,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:32,571 INFO L124 PetriNetUnfolderBase]: 364/613 cut-off events. [2024-10-13 07:08:32,571 INFO L125 PetriNetUnfolderBase]: For 1249/1249 co-relation queries the response was YES. [2024-10-13 07:08:32,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 613 events. 364/613 cut-off events. For 1249/1249 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2207 event pairs, 185 based on Foata normal form. 20/632 useless extension candidates. Maximal degree in co-relation 2431. Up to 434 conditions per place. [2024-10-13 07:08:32,580 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 49 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-10-13 07:08:32,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 511 flow [2024-10-13 07:08:32,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-10-13 07:08:32,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27310924369747897 [2024-10-13 07:08:32,581 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 364 flow. Second operand 7 states and 65 transitions. [2024-10-13 07:08:32,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 511 flow [2024-10-13 07:08:32,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 486 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-10-13 07:08:32,584 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 329 flow [2024-10-13 07:08:32,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2024-10-13 07:08:32,584 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-10-13 07:08:32,584 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 329 flow [2024-10-13 07:08:32,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:32,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:32,585 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] [2024-10-13 07:08:32,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:32,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:32,785 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:32,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1156338135, now seen corresponding path program 1 times [2024-10-13 07:08:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:32,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211575321] [2024-10-13 07:08:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:32,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211575321] [2024-10-13 07:08:33,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211575321] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744956624] [2024-10-13 07:08:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:33,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:33,609 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:33,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 07:08:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:33,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-13 07:08:33,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:34,024 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:34,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:34,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:34,545 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:08:34,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 82 [2024-10-13 07:08:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744956624] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:34,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-10-13 07:08:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221520622] [2024-10-13 07:08:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:34,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 07:08:34,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:34,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 329 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:34,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:34,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:34,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:35,580 INFO L124 PetriNetUnfolderBase]: 569/967 cut-off events. [2024-10-13 07:08:35,580 INFO L125 PetriNetUnfolderBase]: For 2096/2096 co-relation queries the response was YES. [2024-10-13 07:08:35,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 967 events. 569/967 cut-off events. For 2096/2096 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4199 event pairs, 97 based on Foata normal form. 1/967 useless extension candidates. Maximal degree in co-relation 3844. Up to 383 conditions per place. [2024-10-13 07:08:35,585 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 101 selfloop transitions, 31 changer transitions 10/143 dead transitions. [2024-10-13 07:08:35,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 143 transitions, 1091 flow [2024-10-13 07:08:35,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:08:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:08:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 169 transitions. [2024-10-13 07:08:35,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3550420168067227 [2024-10-13 07:08:35,586 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 329 flow. Second operand 14 states and 169 transitions. [2024-10-13 07:08:35,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 143 transitions, 1091 flow [2024-10-13 07:08:35,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 143 transitions, 1071 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 07:08:35,594 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 596 flow [2024-10-13 07:08:35,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=596, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2024-10-13 07:08:35,594 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-10-13 07:08:35,594 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 596 flow [2024-10-13 07:08:35,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:35,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:35,594 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] [2024-10-13 07:08:35,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 07:08:35,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:35,795 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:35,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:35,795 INFO L85 PathProgramCache]: Analyzing trace with hash -834199651, now seen corresponding path program 2 times [2024-10-13 07:08:35,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:35,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478155377] [2024-10-13 07:08:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:35,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:36,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:36,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478155377] [2024-10-13 07:08:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478155377] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449134969] [2024-10-13 07:08:36,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:36,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:36,532 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:36,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 07:08:36,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:08:36,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:36,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:08:36,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:36,695 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:36,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:36,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:36,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449134969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:36,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:36,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:08:36,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540692425] [2024-10-13 07:08:36,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:36,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:36,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:36,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:36,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:08:36,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:36,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 596 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:36,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:36,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:36,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:37,124 INFO L124 PetriNetUnfolderBase]: 625/1054 cut-off events. [2024-10-13 07:08:37,124 INFO L125 PetriNetUnfolderBase]: For 5175/5175 co-relation queries the response was YES. [2024-10-13 07:08:37,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5084 conditions, 1054 events. 625/1054 cut-off events. For 5175/5175 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4618 event pairs, 312 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 5053. Up to 787 conditions per place. [2024-10-13 07:08:37,130 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 78 selfloop transitions, 26 changer transitions 14/119 dead transitions. [2024-10-13 07:08:37,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 1266 flow [2024-10-13 07:08:37,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:08:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:08:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-10-13 07:08:37,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3205882352941177 [2024-10-13 07:08:37,132 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 596 flow. Second operand 10 states and 109 transitions. [2024-10-13 07:08:37,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 1266 flow [2024-10-13 07:08:37,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 119 transitions, 1220 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:37,142 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 888 flow [2024-10-13 07:08:37,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=888, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2024-10-13 07:08:37,142 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-10-13 07:08:37,142 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 888 flow [2024-10-13 07:08:37,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:37,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:37,143 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] [2024-10-13 07:08:37,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:37,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 07:08:37,345 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:37,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash 81051381, now seen corresponding path program 3 times [2024-10-13 07:08:37,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:37,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143232379] [2024-10-13 07:08:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:37,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:38,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:38,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143232379] [2024-10-13 07:08:38,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143232379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:38,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883293362] [2024-10-13 07:08:38,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:38,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:38,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:38,014 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:38,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 07:08:38,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:08:38,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:38,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:08:38,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:38,272 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:38,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:38,336 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883293362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:38,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:38,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:08:38,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609742695] [2024-10-13 07:08:38,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:38,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:38,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:08:38,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:38,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:38,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:38,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:38,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:38,683 INFO L124 PetriNetUnfolderBase]: 610/1032 cut-off events. [2024-10-13 07:08:38,683 INFO L125 PetriNetUnfolderBase]: For 6309/6309 co-relation queries the response was YES. [2024-10-13 07:08:38,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5354 conditions, 1032 events. 610/1032 cut-off events. For 6309/6309 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4566 event pairs, 232 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 5317. Up to 567 conditions per place. [2024-10-13 07:08:38,688 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 119 selfloop transitions, 24 changer transitions 18/162 dead transitions. [2024-10-13 07:08:38,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 162 transitions, 1802 flow [2024-10-13 07:08:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:08:38,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:08:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-10-13 07:08:38,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35049019607843135 [2024-10-13 07:08:38,689 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 888 flow. Second operand 12 states and 143 transitions. [2024-10-13 07:08:38,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 162 transitions, 1802 flow [2024-10-13 07:08:38,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 162 transitions, 1678 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:38,701 INFO L231 Difference]: Finished difference. Result has 103 places, 81 transitions, 854 flow [2024-10-13 07:08:38,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=854, PETRI_PLACES=103, PETRI_TRANSITIONS=81} [2024-10-13 07:08:38,701 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-10-13 07:08:38,701 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 81 transitions, 854 flow [2024-10-13 07:08:38,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:38,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:38,702 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] [2024-10-13 07:08:38,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 07:08:38,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:38,905 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:38,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:38,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1938545821, now seen corresponding path program 4 times [2024-10-13 07:08:38,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:38,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595591487] [2024-10-13 07:08:38,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:38,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:39,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595591487] [2024-10-13 07:08:39,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595591487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834247430] [2024-10-13 07:08:39,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:39,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:39,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:39,471 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:39,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 07:08:39,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:39,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:39,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 07:08:39,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:39,681 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:39,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:39,769 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:39,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834247430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:39,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:39,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 22 [2024-10-13 07:08:39,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883616438] [2024-10-13 07:08:39,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:39,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:39,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:39,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-10-13 07:08:39,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:39,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 81 transitions, 854 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:39,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:39,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:39,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:40,092 INFO L124 PetriNetUnfolderBase]: 613/1045 cut-off events. [2024-10-13 07:08:40,092 INFO L125 PetriNetUnfolderBase]: For 6548/6548 co-relation queries the response was YES. [2024-10-13 07:08:40,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5496 conditions, 1045 events. 613/1045 cut-off events. For 6548/6548 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4631 event pairs, 303 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 5457. Up to 752 conditions per place. [2024-10-13 07:08:40,099 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 76 selfloop transitions, 32 changer transitions 17/126 dead transitions. [2024-10-13 07:08:40,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 126 transitions, 1422 flow [2024-10-13 07:08:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:08:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:08:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 130 transitions. [2024-10-13 07:08:40,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27310924369747897 [2024-10-13 07:08:40,101 INFO L175 Difference]: Start difference. First operand has 103 places, 81 transitions, 854 flow. Second operand 14 states and 130 transitions. [2024-10-13 07:08:40,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 126 transitions, 1422 flow [2024-10-13 07:08:40,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 126 transitions, 1321 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-10-13 07:08:40,114 INFO L231 Difference]: Finished difference. Result has 110 places, 88 transitions, 980 flow [2024-10-13 07:08:40,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=980, PETRI_PLACES=110, PETRI_TRANSITIONS=88} [2024-10-13 07:08:40,115 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-10-13 07:08:40,115 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 88 transitions, 980 flow [2024-10-13 07:08:40,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:40,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:40,115 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] [2024-10-13 07:08:40,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:40,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:40,319 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:40,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:40,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1140190331, now seen corresponding path program 5 times [2024-10-13 07:08:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:40,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714522607] [2024-10-13 07:08:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:40,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:40,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:40,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714522607] [2024-10-13 07:08:40,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714522607] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:40,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425361701] [2024-10-13 07:08:40,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:40,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:40,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:40,902 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:40,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 07:08:40,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:40,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:40,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-13 07:08:40,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:41,341 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 07:08:41,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-10-13 07:08:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:41,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:41,780 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:08:41,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-10-13 07:08:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425361701] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:41,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:41,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14, 13] total 34 [2024-10-13 07:08:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076849753] [2024-10-13 07:08:41,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:41,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:41,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:41,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=962, Unknown=0, NotChecked=0, Total=1122 [2024-10-13 07:08:41,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:41,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 88 transitions, 980 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:41,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:41,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:41,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:42,477 INFO L124 PetriNetUnfolderBase]: 644/1096 cut-off events. [2024-10-13 07:08:42,477 INFO L125 PetriNetUnfolderBase]: For 7247/7247 co-relation queries the response was YES. [2024-10-13 07:08:42,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5905 conditions, 1096 events. 644/1096 cut-off events. For 7247/7247 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4930 event pairs, 110 based on Foata normal form. 1/1097 useless extension candidates. Maximal degree in co-relation 5863. Up to 631 conditions per place. [2024-10-13 07:08:42,483 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 110 selfloop transitions, 56 changer transitions 6/173 dead transitions. [2024-10-13 07:08:42,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 173 transitions, 2092 flow [2024-10-13 07:08:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:08:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:08:42,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 160 transitions. [2024-10-13 07:08:42,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33613445378151263 [2024-10-13 07:08:42,484 INFO L175 Difference]: Start difference. First operand has 110 places, 88 transitions, 980 flow. Second operand 14 states and 160 transitions. [2024-10-13 07:08:42,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 173 transitions, 2092 flow [2024-10-13 07:08:42,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 173 transitions, 1964 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:42,498 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 1427 flow [2024-10-13 07:08:42,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1427, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-10-13 07:08:42,498 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-10-13 07:08:42,498 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 1427 flow [2024-10-13 07:08:42,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:42,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:42,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:42,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:42,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:42,702 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:42,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash 817515493, now seen corresponding path program 6 times [2024-10-13 07:08:42,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:42,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905749458] [2024-10-13 07:08:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:42,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:43,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905749458] [2024-10-13 07:08:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905749458] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944478823] [2024-10-13 07:08:43,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:43,309 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:43,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 07:08:43,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 07:08:43,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:43,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:08:43,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:43,466 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:43,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:43,520 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:43,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944478823] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:43,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:43,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:08:43,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395164179] [2024-10-13 07:08:43,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:43,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:43,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:43,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:08:43,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:43,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 1427 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:43,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:43,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:43,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:43,806 INFO L124 PetriNetUnfolderBase]: 652/1112 cut-off events. [2024-10-13 07:08:43,807 INFO L125 PetriNetUnfolderBase]: For 6762/6762 co-relation queries the response was YES. [2024-10-13 07:08:43,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6033 conditions, 1112 events. 652/1112 cut-off events. For 6762/6762 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5034 event pairs, 299 based on Foata normal form. 1/1112 useless extension candidates. Maximal degree in co-relation 5987. Up to 810 conditions per place. [2024-10-13 07:08:43,813 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 89 selfloop transitions, 45 changer transitions 9/144 dead transitions. [2024-10-13 07:08:43,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 144 transitions, 1910 flow [2024-10-13 07:08:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:08:43,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:08:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-10-13 07:08:43,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3205882352941177 [2024-10-13 07:08:43,814 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 1427 flow. Second operand 10 states and 109 transitions. [2024-10-13 07:08:43,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 144 transitions, 1910 flow [2024-10-13 07:08:43,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 144 transitions, 1824 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:43,828 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 1438 flow [2024-10-13 07:08:43,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1438, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-10-13 07:08:43,828 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-10-13 07:08:43,829 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 1438 flow [2024-10-13 07:08:43,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:43,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:43,829 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] [2024-10-13 07:08:43,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:44,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 07:08:44,029 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:44,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1807646209, now seen corresponding path program 7 times [2024-10-13 07:08:44,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:44,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640152769] [2024-10-13 07:08:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:44,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:44,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:44,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640152769] [2024-10-13 07:08:44,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640152769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:44,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151590181] [2024-10-13 07:08:44,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:08:44,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:44,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:44,567 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:44,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 07:08:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:44,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-13 07:08:44,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:44,861 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:44,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:44,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:45,391 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:08:45,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-10-13 07:08:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:45,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151590181] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:45,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-10-13 07:08:45,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055043236] [2024-10-13 07:08:45,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:45,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:45,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:45,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=928, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 07:08:45,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:45,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 1438 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:45,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:45,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:45,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:46,194 INFO L124 PetriNetUnfolderBase]: 636/1088 cut-off events. [2024-10-13 07:08:46,194 INFO L125 PetriNetUnfolderBase]: For 6683/6683 co-relation queries the response was YES. [2024-10-13 07:08:46,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 1088 events. 636/1088 cut-off events. For 6683/6683 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4924 event pairs, 111 based on Foata normal form. 1/1088 useless extension candidates. Maximal degree in co-relation 5825. Up to 626 conditions per place. [2024-10-13 07:08:46,201 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 105 selfloop transitions, 53 changer transitions 12/171 dead transitions. [2024-10-13 07:08:46,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 171 transitions, 2137 flow [2024-10-13 07:08:46,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:08:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:08:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 157 transitions. [2024-10-13 07:08:46,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32983193277310924 [2024-10-13 07:08:46,202 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 1438 flow. Second operand 14 states and 157 transitions. [2024-10-13 07:08:46,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 171 transitions, 2137 flow [2024-10-13 07:08:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 171 transitions, 2049 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-13 07:08:46,216 INFO L231 Difference]: Finished difference. Result has 132 places, 108 transitions, 1421 flow [2024-10-13 07:08:46,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1421, PETRI_PLACES=132, PETRI_TRANSITIONS=108} [2024-10-13 07:08:46,217 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-10-13 07:08:46,217 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 108 transitions, 1421 flow [2024-10-13 07:08:46,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:46,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:46,217 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] [2024-10-13 07:08:46,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:46,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 07:08:46,418 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:46,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1180733525, now seen corresponding path program 8 times [2024-10-13 07:08:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925608655] [2024-10-13 07:08:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:46,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:46,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:46,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925608655] [2024-10-13 07:08:46,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925608655] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:46,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014168834] [2024-10-13 07:08:46,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:46,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:46,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:46,934 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:46,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-13 07:08:46,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:08:46,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:46,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:08:46,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:47,078 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:47,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:47,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:47,159 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:47,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014168834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:47,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:47,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:08:47,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230852447] [2024-10-13 07:08:47,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:47,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:47,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:47,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:47,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:08:47,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:47,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 108 transitions, 1421 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:47,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:47,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:47,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:47,404 INFO L124 PetriNetUnfolderBase]: 643/1101 cut-off events. [2024-10-13 07:08:47,405 INFO L125 PetriNetUnfolderBase]: For 6983/6983 co-relation queries the response was YES. [2024-10-13 07:08:47,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6054 conditions, 1101 events. 643/1101 cut-off events. For 6983/6983 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5015 event pairs, 315 based on Foata normal form. 1/1101 useless extension candidates. Maximal degree in co-relation 6008. Up to 818 conditions per place. [2024-10-13 07:08:47,411 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 85 selfloop transitions, 46 changer transitions 9/141 dead transitions. [2024-10-13 07:08:47,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 141 transitions, 1960 flow [2024-10-13 07:08:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:08:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:08:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-10-13 07:08:47,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-10-13 07:08:47,412 INFO L175 Difference]: Start difference. First operand has 132 places, 108 transitions, 1421 flow. Second operand 9 states and 102 transitions. [2024-10-13 07:08:47,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 141 transitions, 1960 flow [2024-10-13 07:08:47,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 141 transitions, 1838 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-10-13 07:08:47,430 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 1532 flow [2024-10-13 07:08:47,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1532, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2024-10-13 07:08:47,430 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-10-13 07:08:47,430 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 1532 flow [2024-10-13 07:08:47,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:47,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:47,431 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] [2024-10-13 07:08:47,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-13 07:08:47,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:47,631 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:47,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:47,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1103164641, now seen corresponding path program 9 times [2024-10-13 07:08:47,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:47,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85898950] [2024-10-13 07:08:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:47,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:48,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:48,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85898950] [2024-10-13 07:08:48,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85898950] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:48,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213937899] [2024-10-13 07:08:48,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:48,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:48,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:48,132 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:48,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-13 07:08:48,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:08:48,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:48,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:08:48,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:48,290 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:48,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:48,373 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:48,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213937899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:48,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:48,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:08:48,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114106077] [2024-10-13 07:08:48,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:48,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:48,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:08:48,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:48,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 1532 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:48,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:48,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:48,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:48,616 INFO L124 PetriNetUnfolderBase]: 635/1086 cut-off events. [2024-10-13 07:08:48,616 INFO L125 PetriNetUnfolderBase]: For 6951/6951 co-relation queries the response was YES. [2024-10-13 07:08:48,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5952 conditions, 1086 events. 635/1086 cut-off events. For 6951/6951 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4911 event pairs, 313 based on Foata normal form. 1/1086 useless extension candidates. Maximal degree in co-relation 5906. Up to 806 conditions per place. [2024-10-13 07:08:48,623 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 86 selfloop transitions, 44 changer transitions 9/140 dead transitions. [2024-10-13 07:08:48,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 140 transitions, 1922 flow [2024-10-13 07:08:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:08:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:08:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-10-13 07:08:48,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3088235294117647 [2024-10-13 07:08:48,624 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 1532 flow. Second operand 10 states and 105 transitions. [2024-10-13 07:08:48,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 140 transitions, 1922 flow [2024-10-13 07:08:48,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 140 transitions, 1885 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:48,640 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 1553 flow [2024-10-13 07:08:48,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1553, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2024-10-13 07:08:48,641 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-10-13 07:08:48,641 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 1553 flow [2024-10-13 07:08:48,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:48,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:48,641 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] [2024-10-13 07:08:48,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-13 07:08:48,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:48,842 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:48,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1883086819, now seen corresponding path program 10 times [2024-10-13 07:08:48,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:48,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351901314] [2024-10-13 07:08:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:49,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351901314] [2024-10-13 07:08:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351901314] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:49,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799585559] [2024-10-13 07:08:49,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:49,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:49,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:49,452 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:49,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-13 07:08:49,522 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:49,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:49,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 07:08:49,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:49,676 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:49,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:49,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:49,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799585559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:49,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:49,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 22 [2024-10-13 07:08:49,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998854202] [2024-10-13 07:08:49,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:49,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:49,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:49,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2024-10-13 07:08:49,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:49,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 113 transitions, 1553 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:49,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:49,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:49,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:50,072 INFO L124 PetriNetUnfolderBase]: 795/1327 cut-off events. [2024-10-13 07:08:50,072 INFO L125 PetriNetUnfolderBase]: For 10817/10817 co-relation queries the response was YES. [2024-10-13 07:08:50,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7744 conditions, 1327 events. 795/1327 cut-off events. For 10817/10817 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6044 event pairs, 300 based on Foata normal form. 1/1327 useless extension candidates. Maximal degree in co-relation 7697. Up to 874 conditions per place. [2024-10-13 07:08:50,079 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 124 selfloop transitions, 51 changer transitions 13/189 dead transitions. [2024-10-13 07:08:50,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 189 transitions, 2746 flow [2024-10-13 07:08:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:08:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:08:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-10-13 07:08:50,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2994652406417112 [2024-10-13 07:08:50,081 INFO L175 Difference]: Start difference. First operand has 132 places, 113 transitions, 1553 flow. Second operand 11 states and 112 transitions. [2024-10-13 07:08:50,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 189 transitions, 2746 flow [2024-10-13 07:08:50,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 189 transitions, 2623 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-10-13 07:08:50,098 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 1939 flow [2024-10-13 07:08:50,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1939, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2024-10-13 07:08:50,099 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-10-13 07:08:50,099 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 1939 flow [2024-10-13 07:08:50,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:50,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:50,099 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] [2024-10-13 07:08:50,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-13 07:08:50,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:50,300 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:50,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash -921740937, now seen corresponding path program 11 times [2024-10-13 07:08:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:50,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782098480] [2024-10-13 07:08:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:50,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:50,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782098480] [2024-10-13 07:08:50,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782098480] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:50,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150317377] [2024-10-13 07:08:50,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:50,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:50,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:50,807 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:50,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-13 07:08:50,883 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:50,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:50,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-13 07:08:50,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:51,085 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:51,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:51,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:51,554 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:08:51,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 90 [2024-10-13 07:08:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:51,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150317377] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:51,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:51,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-10-13 07:08:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61545270] [2024-10-13 07:08:51,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:51,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:51,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:51,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 07:08:51,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:51,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 1939 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:51,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:51,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:51,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:52,599 INFO L124 PetriNetUnfolderBase]: 813/1370 cut-off events. [2024-10-13 07:08:52,599 INFO L125 PetriNetUnfolderBase]: For 13488/13488 co-relation queries the response was YES. [2024-10-13 07:08:52,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8487 conditions, 1370 events. 813/1370 cut-off events. For 13488/13488 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6366 event pairs, 120 based on Foata normal form. 1/1371 useless extension candidates. Maximal degree in co-relation 8434. Up to 667 conditions per place. [2024-10-13 07:08:52,607 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 118 selfloop transitions, 85 changer transitions 14/218 dead transitions. [2024-10-13 07:08:52,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 218 transitions, 3187 flow [2024-10-13 07:08:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 07:08:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 07:08:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 180 transitions. [2024-10-13 07:08:52,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31141868512110726 [2024-10-13 07:08:52,608 INFO L175 Difference]: Start difference. First operand has 139 places, 131 transitions, 1939 flow. Second operand 17 states and 180 transitions. [2024-10-13 07:08:52,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 218 transitions, 3187 flow [2024-10-13 07:08:52,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 218 transitions, 3112 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:52,635 INFO L231 Difference]: Finished difference. Result has 158 places, 154 transitions, 2563 flow [2024-10-13 07:08:52,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2563, PETRI_PLACES=158, PETRI_TRANSITIONS=154} [2024-10-13 07:08:52,636 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-10-13 07:08:52,636 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 154 transitions, 2563 flow [2024-10-13 07:08:52,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:52,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:52,636 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] [2024-10-13 07:08:52,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:52,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-13 07:08:52,837 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:52,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:52,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1394058961, now seen corresponding path program 12 times [2024-10-13 07:08:52,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:52,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203553342] [2024-10-13 07:08:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:52,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203553342] [2024-10-13 07:08:53,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203553342] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274084470] [2024-10-13 07:08:53,431 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:53,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:53,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:53,433 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:53,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-13 07:08:53,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 07:08:53,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:53,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:08:53,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:53,636 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:53,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:53,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274084470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:53,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:53,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:08:53,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811995167] [2024-10-13 07:08:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:53,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:08:53,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:53,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 154 transitions, 2563 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:53,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:53,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:53,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:54,007 INFO L124 PetriNetUnfolderBase]: 824/1387 cut-off events. [2024-10-13 07:08:54,008 INFO L125 PetriNetUnfolderBase]: For 14810/14810 co-relation queries the response was YES. [2024-10-13 07:08:54,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9074 conditions, 1387 events. 824/1387 cut-off events. For 14810/14810 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6447 event pairs, 301 based on Foata normal form. 1/1387 useless extension candidates. Maximal degree in co-relation 9014. Up to 921 conditions per place. [2024-10-13 07:08:54,017 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 125 selfloop transitions, 65 changer transitions 7/198 dead transitions. [2024-10-13 07:08:54,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 198 transitions, 3381 flow [2024-10-13 07:08:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:08:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:08:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-10-13 07:08:54,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3176470588235294 [2024-10-13 07:08:54,018 INFO L175 Difference]: Start difference. First operand has 158 places, 154 transitions, 2563 flow. Second operand 10 states and 108 transitions. [2024-10-13 07:08:54,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 198 transitions, 3381 flow [2024-10-13 07:08:54,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 198 transitions, 3139 flow, removed 93 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:54,052 INFO L231 Difference]: Finished difference. Result has 163 places, 166 transitions, 2692 flow [2024-10-13 07:08:54,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2692, PETRI_PLACES=163, PETRI_TRANSITIONS=166} [2024-10-13 07:08:54,053 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-10-13 07:08:54,053 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 166 transitions, 2692 flow [2024-10-13 07:08:54,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:54,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:54,053 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] [2024-10-13 07:08:54,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-13 07:08:54,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-13 07:08:54,257 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:54,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:54,257 INFO L85 PathProgramCache]: Analyzing trace with hash -411412301, now seen corresponding path program 13 times [2024-10-13 07:08:54,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:54,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769558095] [2024-10-13 07:08:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:54,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:54,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:54,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769558095] [2024-10-13 07:08:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769558095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:54,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753449901] [2024-10-13 07:08:54,735 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:08:54,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:54,736 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:54,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-13 07:08:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:54,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-13 07:08:54,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:55,015 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:55,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:55,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:55,519 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:08:55,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-10-13 07:08:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:55,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753449901] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:55,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:08:55,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-10-13 07:08:55,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581168205] [2024-10-13 07:08:55,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:55,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:55,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 07:08:55,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:55,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 166 transitions, 2692 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:55,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:55,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:55,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:56,402 INFO L124 PetriNetUnfolderBase]: 832/1414 cut-off events. [2024-10-13 07:08:56,403 INFO L125 PetriNetUnfolderBase]: For 14226/14226 co-relation queries the response was YES. [2024-10-13 07:08:56,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9065 conditions, 1414 events. 832/1414 cut-off events. For 14226/14226 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6703 event pairs, 126 based on Foata normal form. 1/1414 useless extension candidates. Maximal degree in co-relation 9004. Up to 697 conditions per place. [2024-10-13 07:08:56,410 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 118 selfloop transitions, 95 changer transitions 9/223 dead transitions. [2024-10-13 07:08:56,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 223 transitions, 3506 flow [2024-10-13 07:08:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 07:08:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 07:08:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 171 transitions. [2024-10-13 07:08:56,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31433823529411764 [2024-10-13 07:08:56,412 INFO L175 Difference]: Start difference. First operand has 163 places, 166 transitions, 2692 flow. Second operand 16 states and 171 transitions. [2024-10-13 07:08:56,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 223 transitions, 3506 flow [2024-10-13 07:08:56,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 223 transitions, 3444 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:56,445 INFO L231 Difference]: Finished difference. Result has 179 places, 169 transitions, 2924 flow [2024-10-13 07:08:56,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2924, PETRI_PLACES=179, PETRI_TRANSITIONS=169} [2024-10-13 07:08:56,445 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-10-13 07:08:56,445 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 169 transitions, 2924 flow [2024-10-13 07:08:56,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:56,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:56,446 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] [2024-10-13 07:08:56,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-13 07:08:56,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-13 07:08:56,646 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:56,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:56,647 INFO L85 PathProgramCache]: Analyzing trace with hash -799990367, now seen corresponding path program 14 times [2024-10-13 07:08:56,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:56,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76255889] [2024-10-13 07:08:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:57,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76255889] [2024-10-13 07:08:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76255889] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855052248] [2024-10-13 07:08:57,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:57,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:57,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:57,240 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:57,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-13 07:08:57,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:08:57,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:57,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:08:57,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:57,456 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:57,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:57,521 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855052248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:57,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:57,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:08:57,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869941595] [2024-10-13 07:08:57,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:57,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:08:57,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:57,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 169 transitions, 2924 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:57,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:57,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:57,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:57,961 INFO L124 PetriNetUnfolderBase]: 858/1459 cut-off events. [2024-10-13 07:08:57,961 INFO L125 PetriNetUnfolderBase]: For 15703/15703 co-relation queries the response was YES. [2024-10-13 07:08:57,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9658 conditions, 1459 events. 858/1459 cut-off events. For 15703/15703 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6975 event pairs, 313 based on Foata normal form. 1/1459 useless extension candidates. Maximal degree in co-relation 9594. Up to 949 conditions per place. [2024-10-13 07:08:57,971 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 129 selfloop transitions, 73 changer transitions 10/213 dead transitions. [2024-10-13 07:08:57,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 213 transitions, 3707 flow [2024-10-13 07:08:57,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:08:57,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:08:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-10-13 07:08:57,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29901960784313725 [2024-10-13 07:08:57,972 INFO L175 Difference]: Start difference. First operand has 179 places, 169 transitions, 2924 flow. Second operand 12 states and 122 transitions. [2024-10-13 07:08:57,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 213 transitions, 3707 flow [2024-10-13 07:08:58,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 213 transitions, 3547 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-10-13 07:08:58,013 INFO L231 Difference]: Finished difference. Result has 186 places, 178 transitions, 3109 flow [2024-10-13 07:08:58,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3109, PETRI_PLACES=186, PETRI_TRANSITIONS=178} [2024-10-13 07:08:58,013 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-10-13 07:08:58,013 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 178 transitions, 3109 flow [2024-10-13 07:08:58,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:58,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:58,014 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] [2024-10-13 07:08:58,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:58,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:58,214 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:58,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash 14373931, now seen corresponding path program 15 times [2024-10-13 07:08:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:58,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879436229] [2024-10-13 07:08:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:58,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:58,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879436229] [2024-10-13 07:08:58,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879436229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:58,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128386962] [2024-10-13 07:08:58,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:58,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:58,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:58,674 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:58,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-13 07:08:58,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:08:58,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:58,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:08:58,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:58,851 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:08:58,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:08:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:08:58,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:08:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128386962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:58,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:08:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:08:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433317889] [2024-10-13 07:08:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:58,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:08:58,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:08:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:08:58,902 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:08:58,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 178 transitions, 3109 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:58,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:58,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:08:58,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:59,340 INFO L124 PetriNetUnfolderBase]: 916/1593 cut-off events. [2024-10-13 07:08:59,340 INFO L125 PetriNetUnfolderBase]: For 15934/15934 co-relation queries the response was YES. [2024-10-13 07:08:59,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10275 conditions, 1593 events. 916/1593 cut-off events. For 15934/15934 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8007 event pairs, 285 based on Foata normal form. 1/1593 useless extension candidates. Maximal degree in co-relation 10206. Up to 815 conditions per place. [2024-10-13 07:08:59,351 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 149 selfloop transitions, 66 changer transitions 17/233 dead transitions. [2024-10-13 07:08:59,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 233 transitions, 3938 flow [2024-10-13 07:08:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 07:08:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 07:08:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 134 transitions. [2024-10-13 07:08:59,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3031674208144796 [2024-10-13 07:08:59,352 INFO L175 Difference]: Start difference. First operand has 186 places, 178 transitions, 3109 flow. Second operand 13 states and 134 transitions. [2024-10-13 07:08:59,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 233 transitions, 3938 flow [2024-10-13 07:08:59,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 233 transitions, 3870 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:59,395 INFO L231 Difference]: Finished difference. Result has 199 places, 179 transitions, 3233 flow [2024-10-13 07:08:59,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3046, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3233, PETRI_PLACES=199, PETRI_TRANSITIONS=179} [2024-10-13 07:08:59,396 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-10-13 07:08:59,396 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 179 transitions, 3233 flow [2024-10-13 07:08:59,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:59,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:59,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:59,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:59,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-13 07:08:59,597 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:59,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:59,597 INFO L85 PathProgramCache]: Analyzing trace with hash -845976283, now seen corresponding path program 16 times [2024-10-13 07:08:59,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:59,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639159576] [2024-10-13 07:08:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:59,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639159576] [2024-10-13 07:09:00,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639159576] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:00,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840036621] [2024-10-13 07:09:00,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:09:00,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:00,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:00,128 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:00,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-13 07:09:00,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:09:00,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:00,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-13 07:09:00,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:00,463 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:09:00,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:09:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:09:00,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:00,824 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:09:00,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-10-13 07:09:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:00,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840036621] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:00,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:09:00,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 12] total 32 [2024-10-13 07:09:00,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159966779] [2024-10-13 07:09:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:00,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:00,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:00,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:00,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2024-10-13 07:09:00,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:00,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 179 transitions, 3233 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:00,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:00,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:00,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:01,594 INFO L124 PetriNetUnfolderBase]: 928/1619 cut-off events. [2024-10-13 07:09:01,595 INFO L125 PetriNetUnfolderBase]: For 18234/18234 co-relation queries the response was YES. [2024-10-13 07:09:01,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10584 conditions, 1619 events. 928/1619 cut-off events. For 18234/18234 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8214 event pairs, 158 based on Foata normal form. 1/1619 useless extension candidates. Maximal degree in co-relation 10511. Up to 887 conditions per place. [2024-10-13 07:09:01,606 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 121 selfloop transitions, 111 changer transitions 8/241 dead transitions. [2024-10-13 07:09:01,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 241 transitions, 4332 flow [2024-10-13 07:09:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:09:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:09:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 164 transitions. [2024-10-13 07:09:01,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3445378151260504 [2024-10-13 07:09:01,607 INFO L175 Difference]: Start difference. First operand has 199 places, 179 transitions, 3233 flow. Second operand 14 states and 164 transitions. [2024-10-13 07:09:01,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 241 transitions, 4332 flow [2024-10-13 07:09:01,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 241 transitions, 4156 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:01,657 INFO L231 Difference]: Finished difference. Result has 203 places, 194 transitions, 3667 flow [2024-10-13 07:09:01,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3667, PETRI_PLACES=203, PETRI_TRANSITIONS=194} [2024-10-13 07:09:01,657 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-10-13 07:09:01,657 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 194 transitions, 3667 flow [2024-10-13 07:09:01,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:01,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:01,658 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] [2024-10-13 07:09:01,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:01,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-13 07:09:01,858 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:01,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:01,859 INFO L85 PathProgramCache]: Analyzing trace with hash 480762405, now seen corresponding path program 17 times [2024-10-13 07:09:01,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:01,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856708432] [2024-10-13 07:09:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:01,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:02,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856708432] [2024-10-13 07:09:02,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856708432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:02,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471531548] [2024-10-13 07:09:02,467 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:09:02,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:02,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:02,469 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:02,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-13 07:09:02,544 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:02,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:02,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-13 07:09:02,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:02,796 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-13 07:09:02,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-10-13 07:09:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:02,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:03,225 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:09:03,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-10-13 07:09:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:03,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471531548] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:03,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:09:03,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-10-13 07:09:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886779183] [2024-10-13 07:09:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:03,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 07:09:03,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:03,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 194 transitions, 3667 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:03,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:03,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:03,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:03,926 INFO L124 PetriNetUnfolderBase]: 913/1586 cut-off events. [2024-10-13 07:09:03,927 INFO L125 PetriNetUnfolderBase]: For 18113/18113 co-relation queries the response was YES. [2024-10-13 07:09:03,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10644 conditions, 1586 events. 913/1586 cut-off events. For 18113/18113 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7971 event pairs, 150 based on Foata normal form. 1/1586 useless extension candidates. Maximal degree in co-relation 10572. Up to 852 conditions per place. [2024-10-13 07:09:03,938 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 114 selfloop transitions, 107 changer transitions 15/237 dead transitions. [2024-10-13 07:09:03,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 237 transitions, 4365 flow [2024-10-13 07:09:03,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:09:03,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:09:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 155 transitions. [2024-10-13 07:09:03,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32563025210084034 [2024-10-13 07:09:03,939 INFO L175 Difference]: Start difference. First operand has 203 places, 194 transitions, 3667 flow. Second operand 14 states and 155 transitions. [2024-10-13 07:09:03,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 237 transitions, 4365 flow [2024-10-13 07:09:03,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 237 transitions, 4201 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:03,988 INFO L231 Difference]: Finished difference. Result has 209 places, 188 transitions, 3608 flow [2024-10-13 07:09:03,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3513, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3608, PETRI_PLACES=209, PETRI_TRANSITIONS=188} [2024-10-13 07:09:03,988 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-10-13 07:09:03,988 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 188 transitions, 3608 flow [2024-10-13 07:09:03,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:03,988 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:03,988 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] [2024-10-13 07:09:04,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:04,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-13 07:09:04,189 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:04,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1544622659, now seen corresponding path program 18 times [2024-10-13 07:09:04,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:04,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412688465] [2024-10-13 07:09:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:04,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:04,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412688465] [2024-10-13 07:09:04,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412688465] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:04,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745025020] [2024-10-13 07:09:04,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:09:04,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:04,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:04,635 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:04,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-13 07:09:04,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-13 07:09:04,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:04,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:09:04,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:04,796 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:09:04,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:09:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:04,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:04,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745025020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:04,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:04,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:09:04,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255475334] [2024-10-13 07:09:04,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:04,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:04,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:04,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:04,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:09:04,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:04,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 188 transitions, 3608 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:04,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:04,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:04,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:05,201 INFO L124 PetriNetUnfolderBase]: 897/1556 cut-off events. [2024-10-13 07:09:05,201 INFO L125 PetriNetUnfolderBase]: For 17587/17587 co-relation queries the response was YES. [2024-10-13 07:09:05,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10467 conditions, 1556 events. 897/1556 cut-off events. For 17587/17587 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7690 event pairs, 359 based on Foata normal form. 1/1556 useless extension candidates. Maximal degree in co-relation 10396. Up to 1043 conditions per place. [2024-10-13 07:09:05,212 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 127 selfloop transitions, 74 changer transitions 15/217 dead transitions. [2024-10-13 07:09:05,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 217 transitions, 4159 flow [2024-10-13 07:09:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-10-13 07:09:05,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30213903743315507 [2024-10-13 07:09:05,213 INFO L175 Difference]: Start difference. First operand has 209 places, 188 transitions, 3608 flow. Second operand 11 states and 113 transitions. [2024-10-13 07:09:05,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 217 transitions, 4159 flow [2024-10-13 07:09:05,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 217 transitions, 3872 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-10-13 07:09:05,260 INFO L231 Difference]: Finished difference. Result has 202 places, 182 transitions, 3348 flow [2024-10-13 07:09:05,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3348, PETRI_PLACES=202, PETRI_TRANSITIONS=182} [2024-10-13 07:09:05,261 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-10-13 07:09:05,261 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 182 transitions, 3348 flow [2024-10-13 07:09:05,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:05,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:05,261 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] [2024-10-13 07:09:05,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:05,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-13 07:09:05,462 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:05,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:05,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1481111973, now seen corresponding path program 19 times [2024-10-13 07:09:05,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:05,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700779793] [2024-10-13 07:09:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:05,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:05,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:05,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700779793] [2024-10-13 07:09:05,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700779793] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:05,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307428233] [2024-10-13 07:09:05,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:09:05,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:05,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:05,942 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:05,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-13 07:09:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:06,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-13 07:09:06,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:06,227 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:09:06,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:09:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:06,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:06,677 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:09:06,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-10-13 07:09:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:06,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307428233] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:06,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:09:06,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-10-13 07:09:06,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404099080] [2024-10-13 07:09:06,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:06,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:06,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 07:09:06,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:06,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 182 transitions, 3348 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:06,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:06,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:06,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:07,479 INFO L124 PetriNetUnfolderBase]: 881/1526 cut-off events. [2024-10-13 07:09:07,479 INFO L125 PetriNetUnfolderBase]: For 17100/17100 co-relation queries the response was YES. [2024-10-13 07:09:07,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10040 conditions, 1526 events. 881/1526 cut-off events. For 17100/17100 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7526 event pairs, 150 based on Foata normal form. 1/1526 useless extension candidates. Maximal degree in co-relation 9969. Up to 824 conditions per place. [2024-10-13 07:09:07,491 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 125 selfloop transitions, 99 changer transitions 10/235 dead transitions. [2024-10-13 07:09:07,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 235 transitions, 4069 flow [2024-10-13 07:09:07,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 07:09:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 07:09:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 174 transitions. [2024-10-13 07:09:07,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31985294117647056 [2024-10-13 07:09:07,492 INFO L175 Difference]: Start difference. First operand has 202 places, 182 transitions, 3348 flow. Second operand 16 states and 174 transitions. [2024-10-13 07:09:07,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 235 transitions, 4069 flow [2024-10-13 07:09:07,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 235 transitions, 3820 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-10-13 07:09:07,537 INFO L231 Difference]: Finished difference. Result has 203 places, 180 transitions, 3262 flow [2024-10-13 07:09:07,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3262, PETRI_PLACES=203, PETRI_TRANSITIONS=180} [2024-10-13 07:09:07,538 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-10-13 07:09:07,538 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 180 transitions, 3262 flow [2024-10-13 07:09:07,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:07,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:07,538 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] [2024-10-13 07:09:07,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:07,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-10-13 07:09:07,739 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:07,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash 453951841, now seen corresponding path program 20 times [2024-10-13 07:09:07,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:07,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94572221] [2024-10-13 07:09:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:07,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:08,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94572221] [2024-10-13 07:09:08,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94572221] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:08,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707100860] [2024-10-13 07:09:08,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:08,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:08,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:08,202 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:08,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-13 07:09:08,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 07:09:08,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:08,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:09:08,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:08,376 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:09:08,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:09:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:08,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707100860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:08,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:08,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:09:08,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859975413] [2024-10-13 07:09:08,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:08,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:09:08,427 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:08,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 180 transitions, 3262 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:08,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:08,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:08,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:08,728 INFO L124 PetriNetUnfolderBase]: 869/1496 cut-off events. [2024-10-13 07:09:08,728 INFO L125 PetriNetUnfolderBase]: For 15099/15099 co-relation queries the response was YES. [2024-10-13 07:09:08,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9866 conditions, 1496 events. 869/1496 cut-off events. For 15099/15099 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7252 event pairs, 356 based on Foata normal form. 1/1496 useless extension candidates. Maximal degree in co-relation 9796. Up to 1050 conditions per place. [2024-10-13 07:09:08,739 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 133 selfloop transitions, 66 changer transitions 10/210 dead transitions. [2024-10-13 07:09:08,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 210 transitions, 3803 flow [2024-10-13 07:09:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-10-13 07:09:08,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3205882352941177 [2024-10-13 07:09:08,740 INFO L175 Difference]: Start difference. First operand has 203 places, 180 transitions, 3262 flow. Second operand 10 states and 109 transitions. [2024-10-13 07:09:08,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 210 transitions, 3803 flow [2024-10-13 07:09:08,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 210 transitions, 3688 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-10-13 07:09:08,784 INFO L231 Difference]: Finished difference. Result has 201 places, 178 transitions, 3256 flow [2024-10-13 07:09:08,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3256, PETRI_PLACES=201, PETRI_TRANSITIONS=178} [2024-10-13 07:09:08,785 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-10-13 07:09:08,785 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 178 transitions, 3256 flow [2024-10-13 07:09:08,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:08,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:08,785 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] [2024-10-13 07:09:08,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-10-13 07:09:08,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:08,985 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:08,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:08,986 INFO L85 PathProgramCache]: Analyzing trace with hash -771391655, now seen corresponding path program 21 times [2024-10-13 07:09:08,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:08,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320968604] [2024-10-13 07:09:08,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:08,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:09,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320968604] [2024-10-13 07:09:09,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320968604] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:09,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578452605] [2024-10-13 07:09:09,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:09:09,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:09,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:09,461 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:09,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-13 07:09:09,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 07:09:09,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:09,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 07:09:09,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:09,615 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-10-13 07:09:09,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-10-13 07:09:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:09,684 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 07:09:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578452605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:09,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 07:09:09,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-10-13 07:09:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397563063] [2024-10-13 07:09:09,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:09,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 07:09:09,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 07:09:09,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-10-13 07:09:09,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:09,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 178 transitions, 3256 flow. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:09,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:09,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:09,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:10,002 INFO L124 PetriNetUnfolderBase]: 854/1463 cut-off events. [2024-10-13 07:09:10,002 INFO L125 PetriNetUnfolderBase]: For 15380/15380 co-relation queries the response was YES. [2024-10-13 07:09:10,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9832 conditions, 1463 events. 854/1463 cut-off events. For 15380/15380 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7004 event pairs, 350 based on Foata normal form. 1/1463 useless extension candidates. Maximal degree in co-relation 9761. Up to 1023 conditions per place. [2024-10-13 07:09:10,014 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 129 selfloop transitions, 65 changer transitions 9/204 dead transitions. [2024-10-13 07:09:10,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 204 transitions, 3783 flow [2024-10-13 07:09:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-10-13 07:09:10,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-10-13 07:09:10,015 INFO L175 Difference]: Start difference. First operand has 201 places, 178 transitions, 3256 flow. Second operand 9 states and 102 transitions. [2024-10-13 07:09:10,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 204 transitions, 3783 flow [2024-10-13 07:09:10,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 204 transitions, 3652 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:10,056 INFO L231 Difference]: Finished difference. Result has 199 places, 175 transitions, 3203 flow [2024-10-13 07:09:10,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3125, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3203, PETRI_PLACES=199, PETRI_TRANSITIONS=175} [2024-10-13 07:09:10,057 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-10-13 07:09:10,057 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 175 transitions, 3203 flow [2024-10-13 07:09:10,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:10,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:10,057 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] [2024-10-13 07:09:10,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:10,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-10-13 07:09:10,259 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:10,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1011901325, now seen corresponding path program 1 times [2024-10-13 07:09:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:10,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650818762] [2024-10-13 07:09:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:10,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:10,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:10,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650818762] [2024-10-13 07:09:10,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650818762] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:10,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310285406] [2024-10-13 07:09:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:10,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:10,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:10,412 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:10,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-13 07:09:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:10,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:09:10,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:10,514 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-13 07:09:10,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-10-13 07:09:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:10,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:10,569 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:09:10,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-10-13 07:09:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:10,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310285406] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:10,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:10,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-10-13 07:09:10,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116499529] [2024-10-13 07:09:10,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:10,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 07:09:10,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:10,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 07:09:10,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:09:10,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:10,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 175 transitions, 3203 flow. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:10,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:10,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:10,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:10,978 INFO L124 PetriNetUnfolderBase]: 894/1522 cut-off events. [2024-10-13 07:09:10,978 INFO L125 PetriNetUnfolderBase]: For 17424/17424 co-relation queries the response was YES. [2024-10-13 07:09:10,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10367 conditions, 1522 events. 894/1522 cut-off events. For 17424/17424 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7431 event pairs, 182 based on Foata normal form. 18/1539 useless extension candidates. Maximal degree in co-relation 10296. Up to 702 conditions per place. [2024-10-13 07:09:10,990 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 167 selfloop transitions, 70 changer transitions 0/238 dead transitions. [2024-10-13 07:09:10,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 238 transitions, 4219 flow [2024-10-13 07:09:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-10-13 07:09:10,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-10-13 07:09:10,991 INFO L175 Difference]: Start difference. First operand has 199 places, 175 transitions, 3203 flow. Second operand 10 states and 119 transitions. [2024-10-13 07:09:10,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 238 transitions, 4219 flow [2024-10-13 07:09:11,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 238 transitions, 3980 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-10-13 07:09:11,041 INFO L231 Difference]: Finished difference. Result has 195 places, 178 transitions, 3194 flow [2024-10-13 07:09:11,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3194, PETRI_PLACES=195, PETRI_TRANSITIONS=178} [2024-10-13 07:09:11,041 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-10-13 07:09:11,041 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 178 transitions, 3194 flow [2024-10-13 07:09:11,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:11,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:11,041 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] [2024-10-13 07:09:11,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-10-13 07:09:11,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:11,242 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:11,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:11,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1513104541, now seen corresponding path program 1 times [2024-10-13 07:09:11,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:11,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244398927] [2024-10-13 07:09:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:11,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:11,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244398927] [2024-10-13 07:09:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244398927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:11,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:11,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:11,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287849062] [2024-10-13 07:09:11,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:11,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:11,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:11,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:11,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 178 transitions, 3194 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:11,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:11,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:11,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:11,830 INFO L124 PetriNetUnfolderBase]: 877/1505 cut-off events. [2024-10-13 07:09:11,830 INFO L125 PetriNetUnfolderBase]: For 16734/16734 co-relation queries the response was YES. [2024-10-13 07:09:11,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10070 conditions, 1505 events. 877/1505 cut-off events. For 16734/16734 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7379 event pairs, 329 based on Foata normal form. 17/1522 useless extension candidates. Maximal degree in co-relation 10000. Up to 906 conditions per place. [2024-10-13 07:09:11,843 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 145 selfloop transitions, 62 changer transitions 21/229 dead transitions. [2024-10-13 07:09:11,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 229 transitions, 3888 flow [2024-10-13 07:09:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:09:11,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:09:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-10-13 07:09:11,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31862745098039214 [2024-10-13 07:09:11,844 INFO L175 Difference]: Start difference. First operand has 195 places, 178 transitions, 3194 flow. Second operand 12 states and 130 transitions. [2024-10-13 07:09:11,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 229 transitions, 3888 flow [2024-10-13 07:09:11,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 229 transitions, 3668 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:11,896 INFO L231 Difference]: Finished difference. Result has 199 places, 169 transitions, 2937 flow [2024-10-13 07:09:11,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2937, PETRI_PLACES=199, PETRI_TRANSITIONS=169} [2024-10-13 07:09:11,897 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-10-13 07:09:11,897 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 169 transitions, 2937 flow [2024-10-13 07:09:11,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:11,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:11,898 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] [2024-10-13 07:09:11,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-10-13 07:09:11,898 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:11,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:11,899 INFO L85 PathProgramCache]: Analyzing trace with hash -162610829, now seen corresponding path program 2 times [2024-10-13 07:09:11,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:11,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030487801] [2024-10-13 07:09:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:12,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:12,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030487801] [2024-10-13 07:09:12,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030487801] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:12,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969225115] [2024-10-13 07:09:12,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:12,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:12,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:12,078 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:12,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-13 07:09:12,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:12,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:12,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 07:09:12,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:12,222 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-13 07:09:12,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-10-13 07:09:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:12,228 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:12,286 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:09:12,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-10-13 07:09:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:12,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969225115] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:12,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:12,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-10-13 07:09:12,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30895510] [2024-10-13 07:09:12,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:12,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:09:12,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:09:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:09:12,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:12,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 169 transitions, 2937 flow. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:12,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:12,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:12,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:12,715 INFO L124 PetriNetUnfolderBase]: 948/1595 cut-off events. [2024-10-13 07:09:12,715 INFO L125 PetriNetUnfolderBase]: For 17092/17092 co-relation queries the response was YES. [2024-10-13 07:09:12,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10718 conditions, 1595 events. 948/1595 cut-off events. For 17092/17092 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7737 event pairs, 391 based on Foata normal form. 12/1607 useless extension candidates. Maximal degree in co-relation 10649. Up to 1138 conditions per place. [2024-10-13 07:09:12,725 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 141 selfloop transitions, 69 changer transitions 0/211 dead transitions. [2024-10-13 07:09:12,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 211 transitions, 3856 flow [2024-10-13 07:09:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-10-13 07:09:12,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3176470588235294 [2024-10-13 07:09:12,726 INFO L175 Difference]: Start difference. First operand has 199 places, 169 transitions, 2937 flow. Second operand 10 states and 108 transitions. [2024-10-13 07:09:12,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 211 transitions, 3856 flow [2024-10-13 07:09:12,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 211 transitions, 3693 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-10-13 07:09:12,766 INFO L231 Difference]: Finished difference. Result has 189 places, 176 transitions, 3103 flow [2024-10-13 07:09:12,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3103, PETRI_PLACES=189, PETRI_TRANSITIONS=176} [2024-10-13 07:09:12,767 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-10-13 07:09:12,767 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 176 transitions, 3103 flow [2024-10-13 07:09:12,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:12,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:12,767 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] [2024-10-13 07:09:12,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:12,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-10-13 07:09:12,968 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:12,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2134442235, now seen corresponding path program 2 times [2024-10-13 07:09:12,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:12,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882117741] [2024-10-13 07:09:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882117741] [2024-10-13 07:09:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882117741] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542361280] [2024-10-13 07:09:13,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:13,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:13,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:13,135 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:13,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-13 07:09:13,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:13,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:13,219 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 07:09:13,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:13,277 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-13 07:09:13,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-10-13 07:09:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:13,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:13,338 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:09:13,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-10-13 07:09:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:13,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542361280] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:13,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:13,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-10-13 07:09:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366514233] [2024-10-13 07:09:13,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:13,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 07:09:13,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 07:09:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:09:13,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:13,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 176 transitions, 3103 flow. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:13,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:13,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:13,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:13,812 INFO L124 PetriNetUnfolderBase]: 1386/2332 cut-off events. [2024-10-13 07:09:13,812 INFO L125 PetriNetUnfolderBase]: For 21822/21822 co-relation queries the response was YES. [2024-10-13 07:09:13,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14811 conditions, 2332 events. 1386/2332 cut-off events. For 21822/21822 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12218 event pairs, 444 based on Foata normal form. 18/2350 useless extension candidates. Maximal degree in co-relation 14746. Up to 1090 conditions per place. [2024-10-13 07:09:13,830 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 188 selfloop transitions, 88 changer transitions 0/277 dead transitions. [2024-10-13 07:09:13,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 277 transitions, 4639 flow [2024-10-13 07:09:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:09:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:09:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-10-13 07:09:13,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2024-10-13 07:09:13,831 INFO L175 Difference]: Start difference. First operand has 189 places, 176 transitions, 3103 flow. Second operand 12 states and 148 transitions. [2024-10-13 07:09:13,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 277 transitions, 4639 flow [2024-10-13 07:09:13,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 277 transitions, 4516 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:13,893 INFO L231 Difference]: Finished difference. Result has 197 places, 191 transitions, 3459 flow [2024-10-13 07:09:13,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3459, PETRI_PLACES=197, PETRI_TRANSITIONS=191} [2024-10-13 07:09:13,924 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-10-13 07:09:13,924 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 191 transitions, 3459 flow [2024-10-13 07:09:13,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:13,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:13,925 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] [2024-10-13 07:09:13,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-10-13 07:09:14,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-10-13 07:09:14,125 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:14,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:14,126 INFO L85 PathProgramCache]: Analyzing trace with hash -235990641, now seen corresponding path program 3 times [2024-10-13 07:09:14,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:14,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832766831] [2024-10-13 07:09:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:14,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:14,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:14,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832766831] [2024-10-13 07:09:14,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832766831] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:14,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:14,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:14,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697596995] [2024-10-13 07:09:14,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:14,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:14,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:14,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:14,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:14,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:14,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 191 transitions, 3459 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:14,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:14,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:14,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:14,632 INFO L124 PetriNetUnfolderBase]: 1406/2364 cut-off events. [2024-10-13 07:09:14,632 INFO L125 PetriNetUnfolderBase]: For 27203/27203 co-relation queries the response was YES. [2024-10-13 07:09:14,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15704 conditions, 2364 events. 1406/2364 cut-off events. For 27203/27203 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12461 event pairs, 646 based on Foata normal form. 12/2376 useless extension candidates. Maximal degree in co-relation 15635. Up to 1883 conditions per place. [2024-10-13 07:09:14,649 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 148 selfloop transitions, 76 changer transitions 0/225 dead transitions. [2024-10-13 07:09:14,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 225 transitions, 4179 flow [2024-10-13 07:09:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:14,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-10-13 07:09:14,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32679738562091504 [2024-10-13 07:09:14,650 INFO L175 Difference]: Start difference. First operand has 197 places, 191 transitions, 3459 flow. Second operand 9 states and 100 transitions. [2024-10-13 07:09:14,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 225 transitions, 4179 flow [2024-10-13 07:09:14,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 225 transitions, 3971 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-10-13 07:09:14,718 INFO L231 Difference]: Finished difference. Result has 198 places, 194 transitions, 3478 flow [2024-10-13 07:09:14,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3478, PETRI_PLACES=198, PETRI_TRANSITIONS=194} [2024-10-13 07:09:14,719 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-10-13 07:09:14,719 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 194 transitions, 3478 flow [2024-10-13 07:09:14,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:14,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:14,719 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] [2024-10-13 07:09:14,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-10-13 07:09:14,719 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:14,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:14,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1551644783, now seen corresponding path program 3 times [2024-10-13 07:09:14,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:14,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495178323] [2024-10-13 07:09:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:14,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:14,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495178323] [2024-10-13 07:09:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495178323] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:14,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215870614] [2024-10-13 07:09:14,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:09:14,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:14,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:14,895 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:14,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-13 07:09:14,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:09:14,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:14,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 07:09:14,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:15,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:15,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-10-13 07:09:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:15,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:15,095 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:09:15,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-10-13 07:09:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:15,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215870614] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:15,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 18 [2024-10-13 07:09:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205656982] [2024-10-13 07:09:15,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:15,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 07:09:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 07:09:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-10-13 07:09:15,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:15,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 194 transitions, 3478 flow. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:15,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:15,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:15,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:15,768 INFO L124 PetriNetUnfolderBase]: 1595/2730 cut-off events. [2024-10-13 07:09:15,769 INFO L125 PetriNetUnfolderBase]: For 26812/26812 co-relation queries the response was YES. [2024-10-13 07:09:15,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16941 conditions, 2730 events. 1595/2730 cut-off events. For 26812/26812 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15128 event pairs, 556 based on Foata normal form. 27/2757 useless extension candidates. Maximal degree in co-relation 16871. Up to 1470 conditions per place. [2024-10-13 07:09:15,794 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 212 selfloop transitions, 100 changer transitions 0/313 dead transitions. [2024-10-13 07:09:15,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 313 transitions, 5050 flow [2024-10-13 07:09:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 07:09:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 07:09:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 196 transitions. [2024-10-13 07:09:15,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3202614379084967 [2024-10-13 07:09:15,795 INFO L175 Difference]: Start difference. First operand has 198 places, 194 transitions, 3478 flow. Second operand 18 states and 196 transitions. [2024-10-13 07:09:15,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 313 transitions, 5050 flow [2024-10-13 07:09:15,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 313 transitions, 4884 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:15,886 INFO L231 Difference]: Finished difference. Result has 216 places, 210 transitions, 3809 flow [2024-10-13 07:09:15,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3318, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3809, PETRI_PLACES=216, PETRI_TRANSITIONS=210} [2024-10-13 07:09:15,886 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-10-13 07:09:15,887 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 210 transitions, 3809 flow [2024-10-13 07:09:15,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:15,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:15,887 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] [2024-10-13 07:09:15,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-10-13 07:09:16,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-13 07:09:16,088 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:16,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:16,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2135003675, now seen corresponding path program 4 times [2024-10-13 07:09:16,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:16,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076969616] [2024-10-13 07:09:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:16,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:16,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:16,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076969616] [2024-10-13 07:09:16,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076969616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:16,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:16,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:16,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728878585] [2024-10-13 07:09:16,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:16,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:16,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:16,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:16,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:16,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:16,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 210 transitions, 3809 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:16,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:16,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:16,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:16,724 INFO L124 PetriNetUnfolderBase]: 1593/2733 cut-off events. [2024-10-13 07:09:16,724 INFO L125 PetriNetUnfolderBase]: For 27230/27230 co-relation queries the response was YES. [2024-10-13 07:09:16,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17318 conditions, 2733 events. 1593/2733 cut-off events. For 27230/27230 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15157 event pairs, 822 based on Foata normal form. 7/2740 useless extension candidates. Maximal degree in co-relation 17242. Up to 2242 conditions per place. [2024-10-13 07:09:16,748 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 155 selfloop transitions, 74 changer transitions 6/236 dead transitions. [2024-10-13 07:09:16,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 236 transitions, 4396 flow [2024-10-13 07:09:16,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-10-13 07:09:16,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29705882352941176 [2024-10-13 07:09:16,749 INFO L175 Difference]: Start difference. First operand has 216 places, 210 transitions, 3809 flow. Second operand 10 states and 101 transitions. [2024-10-13 07:09:16,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 236 transitions, 4396 flow [2024-10-13 07:09:16,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 236 transitions, 4315 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:16,841 INFO L231 Difference]: Finished difference. Result has 217 places, 207 transitions, 3805 flow [2024-10-13 07:09:16,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3703, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3805, PETRI_PLACES=217, PETRI_TRANSITIONS=207} [2024-10-13 07:09:16,841 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-10-13 07:09:16,841 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 207 transitions, 3805 flow [2024-10-13 07:09:16,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:16,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:16,842 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] [2024-10-13 07:09:16,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-10-13 07:09:16,842 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:16,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash 465375759, now seen corresponding path program 4 times [2024-10-13 07:09:16,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:16,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566250210] [2024-10-13 07:09:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:16,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:17,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:17,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566250210] [2024-10-13 07:09:17,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566250210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:17,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:17,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:17,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331953492] [2024-10-13 07:09:17,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:17,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:17,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:17,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 207 transitions, 3805 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:17,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:17,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:17,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:17,484 INFO L124 PetriNetUnfolderBase]: 1460/2461 cut-off events. [2024-10-13 07:09:17,484 INFO L125 PetriNetUnfolderBase]: For 26345/26345 co-relation queries the response was YES. [2024-10-13 07:09:17,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16179 conditions, 2461 events. 1460/2461 cut-off events. For 26345/26345 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13047 event pairs, 707 based on Foata normal form. 6/2467 useless extension candidates. Maximal degree in co-relation 16102. Up to 1985 conditions per place. [2024-10-13 07:09:17,503 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 151 selfloop transitions, 70 changer transitions 5/227 dead transitions. [2024-10-13 07:09:17,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 227 transitions, 4268 flow [2024-10-13 07:09:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-10-13 07:09:17,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-10-13 07:09:17,504 INFO L175 Difference]: Start difference. First operand has 217 places, 207 transitions, 3805 flow. Second operand 10 states and 98 transitions. [2024-10-13 07:09:17,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 227 transitions, 4268 flow [2024-10-13 07:09:17,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 227 transitions, 4118 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-10-13 07:09:17,590 INFO L231 Difference]: Finished difference. Result has 214 places, 199 transitions, 3603 flow [2024-10-13 07:09:17,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3603, PETRI_PLACES=214, PETRI_TRANSITIONS=199} [2024-10-13 07:09:17,591 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-10-13 07:09:17,591 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 199 transitions, 3603 flow [2024-10-13 07:09:17,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:17,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:17,591 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] [2024-10-13 07:09:17,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-10-13 07:09:17,591 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:17,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:17,592 INFO L85 PathProgramCache]: Analyzing trace with hash 399910681, now seen corresponding path program 5 times [2024-10-13 07:09:17,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:17,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513488621] [2024-10-13 07:09:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:17,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:17,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513488621] [2024-10-13 07:09:17,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513488621] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:17,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:17,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:17,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153242892] [2024-10-13 07:09:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:17,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:17,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:17,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 199 transitions, 3603 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:17,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:17,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:17,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:18,188 INFO L124 PetriNetUnfolderBase]: 1460/2465 cut-off events. [2024-10-13 07:09:18,189 INFO L125 PetriNetUnfolderBase]: For 25918/25918 co-relation queries the response was YES. [2024-10-13 07:09:18,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16059 conditions, 2465 events. 1460/2465 cut-off events. For 25918/25918 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13112 event pairs, 704 based on Foata normal form. 7/2472 useless extension candidates. Maximal degree in co-relation 15984. Up to 1981 conditions per place. [2024-10-13 07:09:18,204 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 150 selfloop transitions, 66 changer transitions 13/230 dead transitions. [2024-10-13 07:09:18,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 230 transitions, 4209 flow [2024-10-13 07:09:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-10-13 07:09:18,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28342245989304815 [2024-10-13 07:09:18,205 INFO L175 Difference]: Start difference. First operand has 214 places, 199 transitions, 3603 flow. Second operand 11 states and 106 transitions. [2024-10-13 07:09:18,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 230 transitions, 4209 flow [2024-10-13 07:09:18,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 230 transitions, 4021 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:18,273 INFO L231 Difference]: Finished difference. Result has 214 places, 195 transitions, 3467 flow [2024-10-13 07:09:18,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3467, PETRI_PLACES=214, PETRI_TRANSITIONS=195} [2024-10-13 07:09:18,274 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-10-13 07:09:18,274 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 195 transitions, 3467 flow [2024-10-13 07:09:18,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:18,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:18,274 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] [2024-10-13 07:09:18,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-10-13 07:09:18,274 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:18,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:18,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1555492427, now seen corresponding path program 6 times [2024-10-13 07:09:18,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:18,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930663690] [2024-10-13 07:09:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:18,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:18,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:18,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930663690] [2024-10-13 07:09:18,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930663690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:18,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:18,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:18,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429774495] [2024-10-13 07:09:18,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:18,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:18,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:18,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:18,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:18,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 195 transitions, 3467 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:18,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:18,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:18,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:18,864 INFO L124 PetriNetUnfolderBase]: 1476/2481 cut-off events. [2024-10-13 07:09:18,864 INFO L125 PetriNetUnfolderBase]: For 26862/26862 co-relation queries the response was YES. [2024-10-13 07:09:18,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16295 conditions, 2481 events. 1476/2481 cut-off events. For 26862/26862 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13094 event pairs, 716 based on Foata normal form. 12/2493 useless extension candidates. Maximal degree in co-relation 16218. Up to 1995 conditions per place. [2024-10-13 07:09:18,886 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 155 selfloop transitions, 67 changer transitions 0/223 dead transitions. [2024-10-13 07:09:18,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 223 transitions, 4233 flow [2024-10-13 07:09:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-10-13 07:09:18,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3202614379084967 [2024-10-13 07:09:18,887 INFO L175 Difference]: Start difference. First operand has 214 places, 195 transitions, 3467 flow. Second operand 9 states and 98 transitions. [2024-10-13 07:09:18,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 223 transitions, 4233 flow [2024-10-13 07:09:18,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 223 transitions, 4083 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-10-13 07:09:18,968 INFO L231 Difference]: Finished difference. Result has 210 places, 202 transitions, 3663 flow [2024-10-13 07:09:18,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3663, PETRI_PLACES=210, PETRI_TRANSITIONS=202} [2024-10-13 07:09:18,969 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-10-13 07:09:18,969 INFO L471 AbstractCegarLoop]: Abstraction has has 210 places, 202 transitions, 3663 flow [2024-10-13 07:09:18,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:18,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:18,969 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] [2024-10-13 07:09:18,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-10-13 07:09:18,969 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:18,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1042229925, now seen corresponding path program 7 times [2024-10-13 07:09:18,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:18,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258620426] [2024-10-13 07:09:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:18,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:19,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:19,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:19,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258620426] [2024-10-13 07:09:19,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258620426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:19,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:19,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:19,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871359035] [2024-10-13 07:09:19,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:19,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:19,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:19,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:19,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:19,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:19,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 202 transitions, 3663 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:19,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:19,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:19,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:19,626 INFO L124 PetriNetUnfolderBase]: 1464/2469 cut-off events. [2024-10-13 07:09:19,626 INFO L125 PetriNetUnfolderBase]: For 26711/26711 co-relation queries the response was YES. [2024-10-13 07:09:19,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16106 conditions, 2469 events. 1464/2469 cut-off events. For 26711/26711 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13093 event pairs, 715 based on Foata normal form. 12/2481 useless extension candidates. Maximal degree in co-relation 16030. Up to 1995 conditions per place. [2024-10-13 07:09:19,647 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 156 selfloop transitions, 67 changer transitions 0/224 dead transitions. [2024-10-13 07:09:19,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 224 transitions, 4268 flow [2024-10-13 07:09:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:19,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-10-13 07:09:19,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2024-10-13 07:09:19,648 INFO L175 Difference]: Start difference. First operand has 210 places, 202 transitions, 3663 flow. Second operand 9 states and 99 transitions. [2024-10-13 07:09:19,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 224 transitions, 4268 flow [2024-10-13 07:09:19,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 224 transitions, 4181 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-10-13 07:09:19,734 INFO L231 Difference]: Finished difference. Result has 216 places, 203 transitions, 3750 flow [2024-10-13 07:09:19,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3577, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3750, PETRI_PLACES=216, PETRI_TRANSITIONS=203} [2024-10-13 07:09:19,734 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-10-13 07:09:19,735 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 203 transitions, 3750 flow [2024-10-13 07:09:19,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:19,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:19,735 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] [2024-10-13 07:09:19,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-10-13 07:09:19,735 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:19,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1354285777, now seen corresponding path program 5 times [2024-10-13 07:09:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:19,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442411752] [2024-10-13 07:09:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:19,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:19,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442411752] [2024-10-13 07:09:19,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442411752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838058245] [2024-10-13 07:09:19,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:09:19,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:19,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:19,897 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:19,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-13 07:09:19,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:19,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:19,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 07:09:19,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:20,021 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-10-13 07:09:20,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-10-13 07:09:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:20,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:20,098 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:09:20,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-10-13 07:09:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:20,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838058245] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:20,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:20,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-10-13 07:09:20,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418953797] [2024-10-13 07:09:20,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:20,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:09:20,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:20,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:09:20,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:09:20,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:20,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 203 transitions, 3750 flow. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:20,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:20,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:20,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:20,678 INFO L124 PetriNetUnfolderBase]: 1647/2760 cut-off events. [2024-10-13 07:09:20,678 INFO L125 PetriNetUnfolderBase]: For 34892/34892 co-relation queries the response was YES. [2024-10-13 07:09:20,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18691 conditions, 2760 events. 1647/2760 cut-off events. For 34892/34892 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14954 event pairs, 705 based on Foata normal form. 27/2787 useless extension candidates. Maximal degree in co-relation 18613. Up to 2066 conditions per place. [2024-10-13 07:09:20,699 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 176 selfloop transitions, 72 changer transitions 0/249 dead transitions. [2024-10-13 07:09:20,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 249 transitions, 4758 flow [2024-10-13 07:09:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-10-13 07:09:20,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3264705882352941 [2024-10-13 07:09:20,700 INFO L175 Difference]: Start difference. First operand has 216 places, 203 transitions, 3750 flow. Second operand 10 states and 111 transitions. [2024-10-13 07:09:20,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 249 transitions, 4758 flow [2024-10-13 07:09:20,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 249 transitions, 4679 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:20,808 INFO L231 Difference]: Finished difference. Result has 222 places, 209 transitions, 3968 flow [2024-10-13 07:09:20,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3671, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3968, PETRI_PLACES=222, PETRI_TRANSITIONS=209} [2024-10-13 07:09:20,809 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-10-13 07:09:20,809 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 209 transitions, 3968 flow [2024-10-13 07:09:20,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:20,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:20,809 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:20,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-10-13 07:09:21,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-10-13 07:09:21,010 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:21,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash -673532357, now seen corresponding path program 6 times [2024-10-13 07:09:21,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:21,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674100918] [2024-10-13 07:09:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:21,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674100918] [2024-10-13 07:09:21,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674100918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:21,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:21,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:21,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490186463] [2024-10-13 07:09:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:21,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:21,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:21,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:21,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:21,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 209 transitions, 3968 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:21,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:21,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:21,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:21,656 INFO L124 PetriNetUnfolderBase]: 1686/2826 cut-off events. [2024-10-13 07:09:21,656 INFO L125 PetriNetUnfolderBase]: For 41878/41878 co-relation queries the response was YES. [2024-10-13 07:09:21,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19682 conditions, 2826 events. 1686/2826 cut-off events. For 41878/41878 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15441 event pairs, 799 based on Foata normal form. 27/2853 useless extension candidates. Maximal degree in co-relation 19603. Up to 2311 conditions per place. [2024-10-13 07:09:21,678 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 164 selfloop transitions, 69 changer transitions 0/234 dead transitions. [2024-10-13 07:09:21,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 234 transitions, 4639 flow [2024-10-13 07:09:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-10-13 07:09:21,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32679738562091504 [2024-10-13 07:09:21,679 INFO L175 Difference]: Start difference. First operand has 222 places, 209 transitions, 3968 flow. Second operand 9 states and 100 transitions. [2024-10-13 07:09:21,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 234 transitions, 4639 flow [2024-10-13 07:09:21,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 234 transitions, 4502 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-10-13 07:09:21,789 INFO L231 Difference]: Finished difference. Result has 225 places, 211 transitions, 4030 flow [2024-10-13 07:09:21,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3839, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4030, PETRI_PLACES=225, PETRI_TRANSITIONS=211} [2024-10-13 07:09:21,790 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-10-13 07:09:21,790 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 211 transitions, 4030 flow [2024-10-13 07:09:21,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:21,790 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:21,790 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] [2024-10-13 07:09:21,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-10-13 07:09:21,790 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:21,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:21,790 INFO L85 PathProgramCache]: Analyzing trace with hash -951839445, now seen corresponding path program 7 times [2024-10-13 07:09:21,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:21,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894683647] [2024-10-13 07:09:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:21,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:21,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894683647] [2024-10-13 07:09:21,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894683647] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:21,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546357191] [2024-10-13 07:09:21,986 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:09:21,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:21,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:21,988 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:21,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-13 07:09:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:22,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:09:22,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:22,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 07:09:22,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-10-13 07:09:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:22,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:22,178 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-10-13 07:09:22,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-10-13 07:09:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:22,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546357191] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:22,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 07:09:22,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 18 [2024-10-13 07:09:22,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967356802] [2024-10-13 07:09:22,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:22,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 07:09:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 07:09:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-10-13 07:09:22,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:22,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 211 transitions, 4030 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:22,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:22,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:22,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:22,658 INFO L124 PetriNetUnfolderBase]: 1756/2992 cut-off events. [2024-10-13 07:09:22,658 INFO L125 PetriNetUnfolderBase]: For 38712/38712 co-relation queries the response was YES. [2024-10-13 07:09:22,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20005 conditions, 2992 events. 1756/2992 cut-off events. For 38712/38712 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 16971 event pairs, 850 based on Foata normal form. 27/3019 useless extension candidates. Maximal degree in co-relation 19925. Up to 2285 conditions per place. [2024-10-13 07:09:22,687 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 179 selfloop transitions, 70 changer transitions 0/250 dead transitions. [2024-10-13 07:09:22,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 250 transitions, 4863 flow [2024-10-13 07:09:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:22,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-10-13 07:09:22,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2024-10-13 07:09:22,688 INFO L175 Difference]: Start difference. First operand has 225 places, 211 transitions, 4030 flow. Second operand 9 states and 111 transitions. [2024-10-13 07:09:22,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 250 transitions, 4863 flow [2024-10-13 07:09:22,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 250 transitions, 4718 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-10-13 07:09:22,863 INFO L231 Difference]: Finished difference. Result has 228 places, 214 transitions, 4128 flow [2024-10-13 07:09:22,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4128, PETRI_PLACES=228, PETRI_TRANSITIONS=214} [2024-10-13 07:09:22,864 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-10-13 07:09:22,864 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 214 transitions, 4128 flow [2024-10-13 07:09:22,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:22,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:22,864 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] [2024-10-13 07:09:22,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:23,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-10-13 07:09:23,065 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:23,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash -340863525, now seen corresponding path program 8 times [2024-10-13 07:09:23,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:23,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630250325] [2024-10-13 07:09:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:23,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:23,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630250325] [2024-10-13 07:09:23,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630250325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:23,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:23,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:23,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929067071] [2024-10-13 07:09:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:23,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:23,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:23,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:23,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 214 transitions, 4128 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:23,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:23,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:23,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:23,685 INFO L124 PetriNetUnfolderBase]: 1711/2920 cut-off events. [2024-10-13 07:09:23,685 INFO L125 PetriNetUnfolderBase]: For 34435/34435 co-relation queries the response was YES. [2024-10-13 07:09:23,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19314 conditions, 2920 events. 1711/2920 cut-off events. For 34435/34435 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16466 event pairs, 873 based on Foata normal form. 6/2925 useless extension candidates. Maximal degree in co-relation 19233. Up to 2436 conditions per place. [2024-10-13 07:09:23,716 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 156 selfloop transitions, 66 changer transitions 5/228 dead transitions. [2024-10-13 07:09:23,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 228 transitions, 4596 flow [2024-10-13 07:09:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-10-13 07:09:23,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2911764705882353 [2024-10-13 07:09:23,717 INFO L175 Difference]: Start difference. First operand has 228 places, 214 transitions, 4128 flow. Second operand 10 states and 99 transitions. [2024-10-13 07:09:23,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 228 transitions, 4596 flow [2024-10-13 07:09:23,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 228 transitions, 4493 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-13 07:09:23,831 INFO L231 Difference]: Finished difference. Result has 233 places, 210 transitions, 4028 flow [2024-10-13 07:09:23,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3966, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4028, PETRI_PLACES=233, PETRI_TRANSITIONS=210} [2024-10-13 07:09:23,832 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-10-13 07:09:23,832 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 210 transitions, 4028 flow [2024-10-13 07:09:23,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:23,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:23,832 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] [2024-10-13 07:09:23,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-10-13 07:09:23,832 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:23,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2038108469, now seen corresponding path program 9 times [2024-10-13 07:09:23,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:23,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963293907] [2024-10-13 07:09:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:23,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:24,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:24,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963293907] [2024-10-13 07:09:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963293907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:24,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:24,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:24,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167083354] [2024-10-13 07:09:24,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:24,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:24,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:24,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:24,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:24,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:24,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 210 transitions, 4028 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:24,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:24,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:24,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:24,422 INFO L124 PetriNetUnfolderBase]: 1702/2905 cut-off events. [2024-10-13 07:09:24,422 INFO L125 PetriNetUnfolderBase]: For 33936/33936 co-relation queries the response was YES. [2024-10-13 07:09:24,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19098 conditions, 2905 events. 1702/2905 cut-off events. For 33936/33936 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16370 event pairs, 851 based on Foata normal form. 6/2911 useless extension candidates. Maximal degree in co-relation 19017. Up to 2430 conditions per place. [2024-10-13 07:09:24,449 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 155 selfloop transitions, 63 changer transitions 5/224 dead transitions. [2024-10-13 07:09:24,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 224 transitions, 4483 flow [2024-10-13 07:09:24,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-10-13 07:09:24,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-10-13 07:09:24,450 INFO L175 Difference]: Start difference. First operand has 233 places, 210 transitions, 4028 flow. Second operand 10 states and 98 transitions. [2024-10-13 07:09:24,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 224 transitions, 4483 flow [2024-10-13 07:09:24,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 224 transitions, 4358 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:24,556 INFO L231 Difference]: Finished difference. Result has 231 places, 206 transitions, 3902 flow [2024-10-13 07:09:24,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3839, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3902, PETRI_PLACES=231, PETRI_TRANSITIONS=206} [2024-10-13 07:09:24,556 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-10-13 07:09:24,556 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 206 transitions, 3902 flow [2024-10-13 07:09:24,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:24,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:24,557 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] [2024-10-13 07:09:24,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-10-13 07:09:24,557 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:24,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:24,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1747895979, now seen corresponding path program 10 times [2024-10-13 07:09:24,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:24,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146799040] [2024-10-13 07:09:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:24,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:24,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:24,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146799040] [2024-10-13 07:09:24,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146799040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:24,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:24,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:24,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402777730] [2024-10-13 07:09:24,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:24,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:24,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:24,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:24,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:24,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:24,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 206 transitions, 3902 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:24,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:24,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:24,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:25,152 INFO L124 PetriNetUnfolderBase]: 1603/2710 cut-off events. [2024-10-13 07:09:25,152 INFO L125 PetriNetUnfolderBase]: For 32381/32381 co-relation queries the response was YES. [2024-10-13 07:09:25,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18027 conditions, 2710 events. 1603/2710 cut-off events. For 32381/32381 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14784 event pairs, 791 based on Foata normal form. 6/2716 useless extension candidates. Maximal degree in co-relation 17946. Up to 2247 conditions per place. [2024-10-13 07:09:25,171 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 153 selfloop transitions, 56 changer transitions 11/221 dead transitions. [2024-10-13 07:09:25,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 221 transitions, 4336 flow [2024-10-13 07:09:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-10-13 07:09:25,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2700534759358289 [2024-10-13 07:09:25,172 INFO L175 Difference]: Start difference. First operand has 231 places, 206 transitions, 3902 flow. Second operand 11 states and 101 transitions. [2024-10-13 07:09:25,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 221 transitions, 4336 flow [2024-10-13 07:09:25,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 221 transitions, 4183 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:25,272 INFO L231 Difference]: Finished difference. Result has 228 places, 198 transitions, 3669 flow [2024-10-13 07:09:25,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3666, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3669, PETRI_PLACES=228, PETRI_TRANSITIONS=198} [2024-10-13 07:09:25,273 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-10-13 07:09:25,273 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 198 transitions, 3669 flow [2024-10-13 07:09:25,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:25,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:25,273 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] [2024-10-13 07:09:25,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-10-13 07:09:25,273 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:25,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:25,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1353724337, now seen corresponding path program 8 times [2024-10-13 07:09:25,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195775761] [2024-10-13 07:09:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:25,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:25,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195775761] [2024-10-13 07:09:25,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195775761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:25,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:25,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449440064] [2024-10-13 07:09:25,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:25,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:25,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:25,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:25,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:25,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:25,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 198 transitions, 3669 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:25,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:25,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:25,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:25,856 INFO L124 PetriNetUnfolderBase]: 1594/2696 cut-off events. [2024-10-13 07:09:25,856 INFO L125 PetriNetUnfolderBase]: For 31658/31658 co-relation queries the response was YES. [2024-10-13 07:09:25,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17840 conditions, 2696 events. 1594/2696 cut-off events. For 31658/31658 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14680 event pairs, 788 based on Foata normal form. 7/2703 useless extension candidates. Maximal degree in co-relation 17759. Up to 2247 conditions per place. [2024-10-13 07:09:25,881 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 152 selfloop transitions, 57 changer transitions 6/216 dead transitions. [2024-10-13 07:09:25,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 216 transitions, 4200 flow [2024-10-13 07:09:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-10-13 07:09:25,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27941176470588236 [2024-10-13 07:09:25,883 INFO L175 Difference]: Start difference. First operand has 228 places, 198 transitions, 3669 flow. Second operand 10 states and 95 transitions. [2024-10-13 07:09:25,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 216 transitions, 4200 flow [2024-10-13 07:09:25,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 216 transitions, 4029 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:25,990 INFO L231 Difference]: Finished difference. Result has 221 places, 197 transitions, 3585 flow [2024-10-13 07:09:25,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3585, PETRI_PLACES=221, PETRI_TRANSITIONS=197} [2024-10-13 07:09:25,990 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-10-13 07:09:25,990 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 197 transitions, 3585 flow [2024-10-13 07:09:25,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:25,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:25,991 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] [2024-10-13 07:09:25,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-10-13 07:09:25,991 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:25,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:25,991 INFO L85 PathProgramCache]: Analyzing trace with hash -343520607, now seen corresponding path program 9 times [2024-10-13 07:09:25,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:25,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977402712] [2024-10-13 07:09:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:25,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977402712] [2024-10-13 07:09:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977402712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:26,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:26,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:26,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114115292] [2024-10-13 07:09:26,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:26,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:26,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:26,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:26,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:26,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:26,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 197 transitions, 3585 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:26,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:26,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:26,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:26,706 INFO L124 PetriNetUnfolderBase]: 1584/2679 cut-off events. [2024-10-13 07:09:26,706 INFO L125 PetriNetUnfolderBase]: For 29693/29693 co-relation queries the response was YES. [2024-10-13 07:09:26,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17551 conditions, 2679 events. 1584/2679 cut-off events. For 29693/29693 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 14602 event pairs, 780 based on Foata normal form. 7/2686 useless extension candidates. Maximal degree in co-relation 17472. Up to 2235 conditions per place. [2024-10-13 07:09:26,728 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 150 selfloop transitions, 55 changer transitions 6/212 dead transitions. [2024-10-13 07:09:26,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 212 transitions, 4036 flow [2024-10-13 07:09:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-10-13 07:09:26,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27941176470588236 [2024-10-13 07:09:26,729 INFO L175 Difference]: Start difference. First operand has 221 places, 197 transitions, 3585 flow. Second operand 10 states and 95 transitions. [2024-10-13 07:09:26,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 212 transitions, 4036 flow [2024-10-13 07:09:26,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 212 transitions, 3924 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:26,823 INFO L231 Difference]: Finished difference. Result has 221 places, 193 transitions, 3477 flow [2024-10-13 07:09:26,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3477, PETRI_PLACES=221, PETRI_TRANSITIONS=193} [2024-10-13 07:09:26,823 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-10-13 07:09:26,823 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 193 transitions, 3477 flow [2024-10-13 07:09:26,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:26,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:26,824 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] [2024-10-13 07:09:26,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-10-13 07:09:26,824 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:26,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:26,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1338246913, now seen corresponding path program 10 times [2024-10-13 07:09:26,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:26,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540180314] [2024-10-13 07:09:26,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:26,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540180314] [2024-10-13 07:09:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540180314] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42782397] [2024-10-13 07:09:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:26,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:26,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:26,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:26,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 193 transitions, 3477 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:26,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:26,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:26,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:27,369 INFO L124 PetriNetUnfolderBase]: 1554/2630 cut-off events. [2024-10-13 07:09:27,370 INFO L125 PetriNetUnfolderBase]: For 28538/28538 co-relation queries the response was YES. [2024-10-13 07:09:27,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17119 conditions, 2630 events. 1554/2630 cut-off events. For 28538/28538 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14259 event pairs, 777 based on Foata normal form. 7/2637 useless extension candidates. Maximal degree in co-relation 17040. Up to 2199 conditions per place. [2024-10-13 07:09:27,391 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 148 selfloop transitions, 48 changer transitions 13/210 dead transitions. [2024-10-13 07:09:27,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 210 transitions, 3909 flow [2024-10-13 07:09:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:27,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-10-13 07:09:27,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26737967914438504 [2024-10-13 07:09:27,392 INFO L175 Difference]: Start difference. First operand has 221 places, 193 transitions, 3477 flow. Second operand 11 states and 100 transitions. [2024-10-13 07:09:27,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 210 transitions, 3909 flow [2024-10-13 07:09:27,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 210 transitions, 3726 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-10-13 07:09:27,479 INFO L231 Difference]: Finished difference. Result has 216 places, 185 transitions, 3222 flow [2024-10-13 07:09:27,479 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3225, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3222, PETRI_PLACES=216, PETRI_TRANSITIONS=185} [2024-10-13 07:09:27,479 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-10-13 07:09:27,479 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 185 transitions, 3222 flow [2024-10-13 07:09:27,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:27,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:27,479 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] [2024-10-13 07:09:27,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-10-13 07:09:27,480 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:27,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1713036003, now seen corresponding path program 11 times [2024-10-13 07:09:27,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:27,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110092899] [2024-10-13 07:09:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:27,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:27,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110092899] [2024-10-13 07:09:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110092899] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:27,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594099271] [2024-10-13 07:09:27,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:09:27,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:27,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:27,629 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:27,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-13 07:09:27,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:27,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:27,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 07:09:27,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:27,740 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-10-13 07:09:27,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-10-13 07:09:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:27,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:27,804 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-10-13 07:09:27,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-10-13 07:09:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:27,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594099271] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:27,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:27,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-10-13 07:09:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539136565] [2024-10-13 07:09:27,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:27,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 07:09:27,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:27,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 07:09:27,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:09:27,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:27,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 185 transitions, 3222 flow. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:27,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:27,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:27,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:28,272 INFO L124 PetriNetUnfolderBase]: 1583/2669 cut-off events. [2024-10-13 07:09:28,272 INFO L125 PetriNetUnfolderBase]: For 25524/25524 co-relation queries the response was YES. [2024-10-13 07:09:28,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17359 conditions, 2669 events. 1583/2669 cut-off events. For 25524/25524 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14531 event pairs, 218 based on Foata normal form. 12/2681 useless extension candidates. Maximal degree in co-relation 17282. Up to 1344 conditions per place. [2024-10-13 07:09:28,293 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 174 selfloop transitions, 79 changer transitions 2/256 dead transitions. [2024-10-13 07:09:28,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 256 transitions, 4433 flow [2024-10-13 07:09:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-10-13 07:09:28,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3323529411764706 [2024-10-13 07:09:28,294 INFO L175 Difference]: Start difference. First operand has 216 places, 185 transitions, 3222 flow. Second operand 10 states and 113 transitions. [2024-10-13 07:09:28,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 256 transitions, 4433 flow [2024-10-13 07:09:28,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 256 transitions, 4290 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-10-13 07:09:28,389 INFO L231 Difference]: Finished difference. Result has 208 places, 189 transitions, 3344 flow [2024-10-13 07:09:28,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3344, PETRI_PLACES=208, PETRI_TRANSITIONS=189} [2024-10-13 07:09:28,390 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-10-13 07:09:28,390 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 189 transitions, 3344 flow [2024-10-13 07:09:28,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:28,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:28,390 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] [2024-10-13 07:09:28,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:28,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:28,590 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:28,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1669704909, now seen corresponding path program 11 times [2024-10-13 07:09:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711905078] [2024-10-13 07:09:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:28,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:28,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:28,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711905078] [2024-10-13 07:09:28,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711905078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:28,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:28,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:28,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16607025] [2024-10-13 07:09:28,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:28,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:28,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:28,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:28,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 189 transitions, 3344 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:28,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:28,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:28,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:29,222 INFO L124 PetriNetUnfolderBase]: 1622/2735 cut-off events. [2024-10-13 07:09:29,223 INFO L125 PetriNetUnfolderBase]: For 29345/29345 co-relation queries the response was YES. [2024-10-13 07:09:29,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18073 conditions, 2735 events. 1622/2735 cut-off events. For 29345/29345 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14866 event pairs, 644 based on Foata normal form. 27/2762 useless extension candidates. Maximal degree in co-relation 17998. Up to 1891 conditions per place. [2024-10-13 07:09:29,242 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 154 selfloop transitions, 78 changer transitions 0/233 dead transitions. [2024-10-13 07:09:29,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 233 transitions, 4275 flow [2024-10-13 07:09:29,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-10-13 07:09:29,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3431372549019608 [2024-10-13 07:09:29,243 INFO L175 Difference]: Start difference. First operand has 208 places, 189 transitions, 3344 flow. Second operand 9 states and 105 transitions. [2024-10-13 07:09:29,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 233 transitions, 4275 flow [2024-10-13 07:09:29,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 233 transitions, 4022 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-10-13 07:09:29,324 INFO L231 Difference]: Finished difference. Result has 206 places, 194 transitions, 3399 flow [2024-10-13 07:09:29,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3399, PETRI_PLACES=206, PETRI_TRANSITIONS=194} [2024-10-13 07:09:29,324 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-10-13 07:09:29,324 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 194 transitions, 3399 flow [2024-10-13 07:09:29,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:29,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:29,325 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] [2024-10-13 07:09:29,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-10-13 07:09:29,325 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:29,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:29,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1111993467, now seen corresponding path program 12 times [2024-10-13 07:09:29,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:29,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158947455] [2024-10-13 07:09:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:29,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:29,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158947455] [2024-10-13 07:09:29,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158947455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:29,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:29,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42914719] [2024-10-13 07:09:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:29,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:29,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:29,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:29,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 194 transitions, 3399 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:29,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:29,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:29,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:29,908 INFO L124 PetriNetUnfolderBase]: 1714/2875 cut-off events. [2024-10-13 07:09:29,908 INFO L125 PetriNetUnfolderBase]: For 29299/29299 co-relation queries the response was YES. [2024-10-13 07:09:29,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19171 conditions, 2875 events. 1714/2875 cut-off events. For 29299/29299 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15826 event pairs, 588 based on Foata normal form. 12/2887 useless extension candidates. Maximal degree in co-relation 19097. Up to 1921 conditions per place. [2024-10-13 07:09:29,932 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 164 selfloop transitions, 87 changer transitions 0/252 dead transitions. [2024-10-13 07:09:29,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 252 transitions, 4568 flow [2024-10-13 07:09:29,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-10-13 07:09:29,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3464052287581699 [2024-10-13 07:09:29,933 INFO L175 Difference]: Start difference. First operand has 206 places, 194 transitions, 3399 flow. Second operand 9 states and 106 transitions. [2024-10-13 07:09:29,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 252 transitions, 4568 flow [2024-10-13 07:09:30,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 252 transitions, 4420 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:30,028 INFO L231 Difference]: Finished difference. Result has 211 places, 201 transitions, 3623 flow [2024-10-13 07:09:30,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3623, PETRI_PLACES=211, PETRI_TRANSITIONS=201} [2024-10-13 07:09:30,028 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-10-13 07:09:30,028 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 201 transitions, 3623 flow [2024-10-13 07:09:30,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:30,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:30,029 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] [2024-10-13 07:09:30,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-10-13 07:09:30,029 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:30,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1061417649, now seen corresponding path program 13 times [2024-10-13 07:09:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:30,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464145158] [2024-10-13 07:09:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:30,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:30,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464145158] [2024-10-13 07:09:30,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464145158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:30,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:30,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432852953] [2024-10-13 07:09:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:30,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:30,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:30,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:30,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 201 transitions, 3623 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:30,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:30,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:30,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:30,652 INFO L124 PetriNetUnfolderBase]: 1734/2907 cut-off events. [2024-10-13 07:09:30,653 INFO L125 PetriNetUnfolderBase]: For 31863/31863 co-relation queries the response was YES. [2024-10-13 07:09:30,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19464 conditions, 2907 events. 1734/2907 cut-off events. For 31863/31863 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15949 event pairs, 671 based on Foata normal form. 12/2919 useless extension candidates. Maximal degree in co-relation 19388. Up to 1951 conditions per place. [2024-10-13 07:09:30,675 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 162 selfloop transitions, 82 changer transitions 1/246 dead transitions. [2024-10-13 07:09:30,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 246 transitions, 4646 flow [2024-10-13 07:09:30,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:30,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-10-13 07:09:30,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3431372549019608 [2024-10-13 07:09:30,676 INFO L175 Difference]: Start difference. First operand has 211 places, 201 transitions, 3623 flow. Second operand 9 states and 105 transitions. [2024-10-13 07:09:30,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 246 transitions, 4646 flow [2024-10-13 07:09:30,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 246 transitions, 4483 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-10-13 07:09:30,766 INFO L231 Difference]: Finished difference. Result has 215 places, 205 transitions, 3752 flow [2024-10-13 07:09:30,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3752, PETRI_PLACES=215, PETRI_TRANSITIONS=205} [2024-10-13 07:09:30,766 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-10-13 07:09:30,767 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 205 transitions, 3752 flow [2024-10-13 07:09:30,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:30,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:30,767 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] [2024-10-13 07:09:30,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-10-13 07:09:30,767 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:30,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash 792132231, now seen corresponding path program 14 times [2024-10-13 07:09:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:30,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756575025] [2024-10-13 07:09:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:30,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:30,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756575025] [2024-10-13 07:09:30,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756575025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:30,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:30,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:30,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150015138] [2024-10-13 07:09:30,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:30,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:30,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:30,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:30,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 205 transitions, 3752 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:30,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:30,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:30,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:31,356 INFO L124 PetriNetUnfolderBase]: 1709/2868 cut-off events. [2024-10-13 07:09:31,356 INFO L125 PetriNetUnfolderBase]: For 30700/30700 co-relation queries the response was YES. [2024-10-13 07:09:31,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19265 conditions, 2868 events. 1709/2868 cut-off events. For 30700/30700 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15812 event pairs, 599 based on Foata normal form. 12/2880 useless extension candidates. Maximal degree in co-relation 19188. Up to 2002 conditions per place. [2024-10-13 07:09:31,384 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 158 selfloop transitions, 84 changer transitions 0/243 dead transitions. [2024-10-13 07:09:31,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 243 transitions, 4545 flow [2024-10-13 07:09:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-10-13 07:09:31,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3202614379084967 [2024-10-13 07:09:31,385 INFO L175 Difference]: Start difference. First operand has 215 places, 205 transitions, 3752 flow. Second operand 9 states and 98 transitions. [2024-10-13 07:09:31,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 243 transitions, 4545 flow [2024-10-13 07:09:31,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 243 transitions, 4381 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:31,481 INFO L231 Difference]: Finished difference. Result has 218 places, 206 transitions, 3782 flow [2024-10-13 07:09:31,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3782, PETRI_PLACES=218, PETRI_TRANSITIONS=206} [2024-10-13 07:09:31,482 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-10-13 07:09:31,482 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 206 transitions, 3782 flow [2024-10-13 07:09:31,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:31,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:31,482 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] [2024-10-13 07:09:31,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-10-13 07:09:31,482 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:31,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:31,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1998606923, now seen corresponding path program 15 times [2024-10-13 07:09:31,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:31,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6700810] [2024-10-13 07:09:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:31,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:31,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:31,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6700810] [2024-10-13 07:09:31,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6700810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:31,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:31,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154145909] [2024-10-13 07:09:31,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:31,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:31,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:31,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:31,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 206 transitions, 3782 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:31,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:31,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:31,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:32,109 INFO L124 PetriNetUnfolderBase]: 1736/2909 cut-off events. [2024-10-13 07:09:32,109 INFO L125 PetriNetUnfolderBase]: For 32066/32066 co-relation queries the response was YES. [2024-10-13 07:09:32,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20018 conditions, 2909 events. 1736/2909 cut-off events. For 32066/32066 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15954 event pairs, 671 based on Foata normal form. 12/2921 useless extension candidates. Maximal degree in co-relation 19941. Up to 2036 conditions per place. [2024-10-13 07:09:32,132 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 153 selfloop transitions, 85 changer transitions 0/239 dead transitions. [2024-10-13 07:09:32,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 239 transitions, 4628 flow [2024-10-13 07:09:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-10-13 07:09:32,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31699346405228757 [2024-10-13 07:09:32,133 INFO L175 Difference]: Start difference. First operand has 218 places, 206 transitions, 3782 flow. Second operand 9 states and 97 transitions. [2024-10-13 07:09:32,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 239 transitions, 4628 flow [2024-10-13 07:09:32,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 239 transitions, 4469 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:32,227 INFO L231 Difference]: Finished difference. Result has 224 places, 213 transitions, 4006 flow [2024-10-13 07:09:32,227 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4006, PETRI_PLACES=224, PETRI_TRANSITIONS=213} [2024-10-13 07:09:32,228 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-10-13 07:09:32,228 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 213 transitions, 4006 flow [2024-10-13 07:09:32,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:32,228 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:32,228 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] [2024-10-13 07:09:32,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-10-13 07:09:32,228 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:32,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1381278885, now seen corresponding path program 16 times [2024-10-13 07:09:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832713310] [2024-10-13 07:09:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:32,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:32,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:32,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832713310] [2024-10-13 07:09:32,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832713310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:32,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:32,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:32,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482605667] [2024-10-13 07:09:32,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:32,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:32,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:32,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:32,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 213 transitions, 4006 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:32,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:32,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:32,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:32,839 INFO L124 PetriNetUnfolderBase]: 1724/2897 cut-off events. [2024-10-13 07:09:32,839 INFO L125 PetriNetUnfolderBase]: For 31127/31127 co-relation queries the response was YES. [2024-10-13 07:09:32,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19751 conditions, 2897 events. 1724/2897 cut-off events. For 31127/31127 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15956 event pairs, 673 based on Foata normal form. 12/2909 useless extension candidates. Maximal degree in co-relation 19671. Up to 2024 conditions per place. [2024-10-13 07:09:32,866 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 154 selfloop transitions, 83 changer transitions 1/239 dead transitions. [2024-10-13 07:09:32,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 239 transitions, 4665 flow [2024-10-13 07:09:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-10-13 07:09:32,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2024-10-13 07:09:32,868 INFO L175 Difference]: Start difference. First operand has 224 places, 213 transitions, 4006 flow. Second operand 9 states and 99 transitions. [2024-10-13 07:09:32,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 239 transitions, 4665 flow [2024-10-13 07:09:32,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 239 transitions, 4469 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:32,962 INFO L231 Difference]: Finished difference. Result has 224 places, 212 transitions, 3938 flow [2024-10-13 07:09:32,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3778, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3938, PETRI_PLACES=224, PETRI_TRANSITIONS=212} [2024-10-13 07:09:32,963 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-10-13 07:09:32,963 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 212 transitions, 3938 flow [2024-10-13 07:09:32,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:32,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:32,963 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] [2024-10-13 07:09:32,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-10-13 07:09:32,963 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:32,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1503466015, now seen corresponding path program 12 times [2024-10-13 07:09:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:32,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508614180] [2024-10-13 07:09:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:32,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:33,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:33,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508614180] [2024-10-13 07:09:33,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508614180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:33,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:33,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:33,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208943327] [2024-10-13 07:09:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:33,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:33,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:33,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 212 transitions, 3938 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:33,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:33,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:33,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:33,599 INFO L124 PetriNetUnfolderBase]: 1757/2951 cut-off events. [2024-10-13 07:09:33,599 INFO L125 PetriNetUnfolderBase]: For 31604/31604 co-relation queries the response was YES. [2024-10-13 07:09:33,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20068 conditions, 2951 events. 1757/2951 cut-off events. For 31604/31604 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16410 event pairs, 601 based on Foata normal form. 27/2978 useless extension candidates. Maximal degree in co-relation 19991. Up to 2061 conditions per place. [2024-10-13 07:09:33,626 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 164 selfloop transitions, 87 changer transitions 0/252 dead transitions. [2024-10-13 07:09:33,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 252 transitions, 4784 flow [2024-10-13 07:09:33,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-10-13 07:09:33,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3235294117647059 [2024-10-13 07:09:33,627 INFO L175 Difference]: Start difference. First operand has 224 places, 212 transitions, 3938 flow. Second operand 9 states and 99 transitions. [2024-10-13 07:09:33,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 252 transitions, 4784 flow [2024-10-13 07:09:33,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 252 transitions, 4597 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-10-13 07:09:33,725 INFO L231 Difference]: Finished difference. Result has 219 places, 214 transitions, 3969 flow [2024-10-13 07:09:33,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3755, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3969, PETRI_PLACES=219, PETRI_TRANSITIONS=214} [2024-10-13 07:09:33,726 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-10-13 07:09:33,726 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 214 transitions, 3969 flow [2024-10-13 07:09:33,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:33,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:33,726 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] [2024-10-13 07:09:33,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-10-13 07:09:33,726 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:33,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash -348510211, now seen corresponding path program 13 times [2024-10-13 07:09:33,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:33,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765036204] [2024-10-13 07:09:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:33,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:33,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765036204] [2024-10-13 07:09:33,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765036204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:33,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:33,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:33,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653288843] [2024-10-13 07:09:33,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:33,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:33,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:33,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:33,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:33,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:33,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 214 transitions, 3969 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:33,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:33,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:33,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:34,337 INFO L124 PetriNetUnfolderBase]: 1751/2945 cut-off events. [2024-10-13 07:09:34,337 INFO L125 PetriNetUnfolderBase]: For 28625/28625 co-relation queries the response was YES. [2024-10-13 07:09:34,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19992 conditions, 2945 events. 1751/2945 cut-off events. For 28625/28625 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16358 event pairs, 569 based on Foata normal form. 6/2951 useless extension candidates. Maximal degree in co-relation 19923. Up to 1847 conditions per place. [2024-10-13 07:09:34,401 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 168 selfloop transitions, 78 changer transitions 16/263 dead transitions. [2024-10-13 07:09:34,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 263 transitions, 4776 flow [2024-10-13 07:09:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:09:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:09:34,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-10-13 07:09:34,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3014705882352941 [2024-10-13 07:09:34,402 INFO L175 Difference]: Start difference. First operand has 219 places, 214 transitions, 3969 flow. Second operand 12 states and 123 transitions. [2024-10-13 07:09:34,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 263 transitions, 4776 flow [2024-10-13 07:09:34,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 263 transitions, 4655 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-10-13 07:09:34,491 INFO L231 Difference]: Finished difference. Result has 224 places, 204 transitions, 3815 flow [2024-10-13 07:09:34,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3815, PETRI_PLACES=224, PETRI_TRANSITIONS=204} [2024-10-13 07:09:34,491 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-10-13 07:09:34,491 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 204 transitions, 3815 flow [2024-10-13 07:09:34,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:34,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:34,492 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] [2024-10-13 07:09:34,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-10-13 07:09:34,492 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:34,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1983796267, now seen corresponding path program 17 times [2024-10-13 07:09:34,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:34,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338267845] [2024-10-13 07:09:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:34,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:34,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:34,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338267845] [2024-10-13 07:09:34,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338267845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:34,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:34,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708236641] [2024-10-13 07:09:34,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:34,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:34,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:34,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:34,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 204 transitions, 3815 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:34,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:34,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:34,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:35,101 INFO L124 PetriNetUnfolderBase]: 1699/2859 cut-off events. [2024-10-13 07:09:35,101 INFO L125 PetriNetUnfolderBase]: For 28829/28829 co-relation queries the response was YES. [2024-10-13 07:09:35,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19408 conditions, 2859 events. 1699/2859 cut-off events. For 28829/28829 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15813 event pairs, 593 based on Foata normal form. 7/2866 useless extension candidates. Maximal degree in co-relation 19339. Up to 1982 conditions per place. [2024-10-13 07:09:35,124 INFO L140 encePairwiseOnDemand]: 22/34 looper letters, 146 selfloop transitions, 79 changer transitions 6/232 dead transitions. [2024-10-13 07:09:35,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 232 transitions, 4426 flow [2024-10-13 07:09:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-10-13 07:09:35,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28823529411764703 [2024-10-13 07:09:35,125 INFO L175 Difference]: Start difference. First operand has 224 places, 204 transitions, 3815 flow. Second operand 10 states and 98 transitions. [2024-10-13 07:09:35,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 232 transitions, 4426 flow [2024-10-13 07:09:35,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 232 transitions, 4254 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:35,213 INFO L231 Difference]: Finished difference. Result has 218 places, 199 transitions, 3672 flow [2024-10-13 07:09:35,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=3575, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3672, PETRI_PLACES=218, PETRI_TRANSITIONS=199} [2024-10-13 07:09:35,214 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-10-13 07:09:35,214 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 199 transitions, 3672 flow [2024-10-13 07:09:35,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:35,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:35,214 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] [2024-10-13 07:09:35,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-10-13 07:09:35,214 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:35,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash 176000327, now seen corresponding path program 14 times [2024-10-13 07:09:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495858488] [2024-10-13 07:09:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 07:09:35,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:35,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495858488] [2024-10-13 07:09:35,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495858488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:09:35,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:09:35,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-13 07:09:35,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418296759] [2024-10-13 07:09:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:09:35,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:09:35,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:09:35,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:09:35,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 34 [2024-10-13 07:09:35,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 199 transitions, 3672 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 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) [2024-10-13 07:09:35,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:35,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 34 [2024-10-13 07:09:35,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand