./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-file-item-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.graphml --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 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:23:39,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:23:39,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:23:39,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:23:39,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:23:39,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:23:39,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:23:39,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:23:39,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:23:39,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:23:39,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:23:39,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:23:39,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:23:39,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:23:39,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:23:39,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:23:39,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:23:39,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:23:39,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:23:39,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:23:39,423 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:23:39,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:23:39,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:23:39,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:23:39,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:23:39,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:23:39,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:23:39,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:23:39,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:23:39,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:23:39,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:23:39,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:23:39,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:23:39,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:23:39,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:23:39,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:23:39,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:23:39,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:23:39,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:23:39,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:23:39,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:23:39,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:23:39,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:23:39,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:23:39,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:23:39,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:23:39,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:23:39,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:23:39,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:23:39,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:23:39,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:23:39,467 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:23:39,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:23:39,468 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:23:39,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:23:39,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:23:39,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:23:39,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:23:39,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:23:39,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:23:39,469 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:23:39,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:23:39,470 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:23:39,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:23:39,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:23:39,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:23:39,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:23:39,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:23:39,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:23:39,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:23:39,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:23:39,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:23:39,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:23:39,472 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:23:39,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:23:39,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:23:39,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 [2022-07-12 10:23:39,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:23:39,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:23:39,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:23:39,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:23:39,665 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:23:39,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2022-07-12 10:23:39,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6206a51fc/f050aff6096848b8ac37c7266a1b79f2/FLAG74c3ff27e [2022-07-12 10:23:40,074 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:23:40,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2022-07-12 10:23:40,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6206a51fc/f050aff6096848b8ac37c7266a1b79f2/FLAG74c3ff27e [2022-07-12 10:23:40,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6206a51fc/f050aff6096848b8ac37c7266a1b79f2 [2022-07-12 10:23:40,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:23:40,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:23:40,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:23:40,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:23:40,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:23:40,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@922a88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40, skipping insertion in model container [2022-07-12 10:23:40,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:23:40,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:23:40,241 WARN L230 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-file-item-symm.wvr.c[2495,2508] [2022-07-12 10:23:40,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:23:40,250 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:23:40,263 WARN L230 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-file-item-symm.wvr.c[2495,2508] [2022-07-12 10:23:40,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:23:40,274 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:23:40,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40 WrapperNode [2022-07-12 10:23:40,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:23:40,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:23:40,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:23:40,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:23:40,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,310 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2022-07-12 10:23:40,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:23:40,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:23:40,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:23:40,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:23:40,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:23:40,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:23:40,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:23:40,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:23:40,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (1/1) ... [2022-07-12 10:23:40,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:23:40,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:23:40,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:23:40,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:23:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:23:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:23:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:23:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:23:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:23:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:23:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:23:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:23:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:23:40,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:23:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:23:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:23:40,458 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:23:40,514 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:23:40,515 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:23:40,706 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:23:40,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:23:40,714 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:23:40,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:23:40 BoogieIcfgContainer [2022-07-12 10:23:40,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:23:40,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:23:40,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:23:40,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:23:40,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:23:40" (1/3) ... [2022-07-12 10:23:40,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aedd92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:23:40, skipping insertion in model container [2022-07-12 10:23:40,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:23:40" (2/3) ... [2022-07-12 10:23:40,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aedd92b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:23:40, skipping insertion in model container [2022-07-12 10:23:40,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:23:40" (3/3) ... [2022-07-12 10:23:40,722 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2022-07-12 10:23:40,729 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:23:40,735 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:23:40,735 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:23:40,736 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:23:40,852 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 10:23:40,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 436 flow [2022-07-12 10:23:40,963 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2022-07-12 10:23:40,965 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:23:40,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 19/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 415 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-07-12 10:23:40,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 436 flow [2022-07-12 10:23:40,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 199 transitions, 410 flow [2022-07-12 10:23:41,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:23:41,013 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5dc73a6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@35649451 [2022-07-12 10:23:41,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 10:23:41,059 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2022-07-12 10:23:41,060 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:23:41,060 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:41,061 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:41,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1008090350, now seen corresponding path program 1 times [2022-07-12 10:23:41,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:41,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412754366] [2022-07-12 10:23:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:41,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:41,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412754366] [2022-07-12 10:23:41,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412754366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:41,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:41,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:23:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073845268] [2022-07-12 10:23:41,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:41,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:23:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:23:41,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:23:41,353 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-12 10:23:41,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:41,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:41,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-12 10:23:41,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:41,469 INFO L129 PetriNetUnfolder]: 46/577 cut-off events. [2022-07-12 10:23:41,470 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-07-12 10:23:41,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 577 events. 46/577 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3147 event pairs, 6 based on Foata normal form. 23/538 useless extension candidates. Maximal degree in co-relation 444. Up to 23 conditions per place. [2022-07-12 10:23:41,488 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 15 selfloop transitions, 3 changer transitions 3/198 dead transitions. [2022-07-12 10:23:41,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 198 transitions, 453 flow [2022-07-12 10:23:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:23:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:23:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2022-07-12 10:23:41,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9603174603174603 [2022-07-12 10:23:41,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2022-07-12 10:23:41,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2022-07-12 10:23:41,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:41,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2022-07-12 10:23:41,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-07-12 10:23:41,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:41,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:41,524 INFO L186 Difference]: Start difference. First operand has 187 places, 199 transitions, 410 flow. Second operand 3 states and 605 transitions. [2022-07-12 10:23:41,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 198 transitions, 453 flow [2022-07-12 10:23:41,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 439 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:23:41,531 INFO L242 Difference]: Finished difference. Result has 187 places, 192 transitions, 412 flow [2022-07-12 10:23:41,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=187, PETRI_TRANSITIONS=192} [2022-07-12 10:23:41,535 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 0 predicate places. [2022-07-12 10:23:41,535 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 192 transitions, 412 flow [2022-07-12 10:23:41,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:41,536 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:41,536 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:41,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:23:41,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:41,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:41,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1177191630, now seen corresponding path program 1 times [2022-07-12 10:23:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:41,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706832497] [2022-07-12 10:23:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:41,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:41,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:41,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706832497] [2022-07-12 10:23:41,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706832497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:41,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:41,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:23:41,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818412525] [2022-07-12 10:23:41,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:41,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:23:41,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:41,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:23:41,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:23:41,610 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-12 10:23:41,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 192 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:41,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:41,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-12 10:23:41,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:41,694 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([620] thread1EXIT-->L68-2: Formula: (and (= v_thread1Thread1of1ForFork0_thidvar1_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem25#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread1Thread1of1ForFork0_thidvar0_4)) InVars {thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem25#1=|v_ULTIMATE.start_main_#t~mem25#1_5|} OutVars{thread1Thread1of1ForFork0_thidvar0=v_thread1Thread1of1ForFork0_thidvar0_4, thread1Thread1of1ForFork0_thidvar1=v_thread1Thread1of1ForFork0_thidvar1_4, ULTIMATE.start_main_#t~mem25#1=|v_ULTIMATE.start_main_#t~mem25#1_5|} AuxVars[] AssignedVars[][150], [17#L50-1true, 50#L68-2true, Black: 201#true, 209#(not (= (+ ~isNull_0~0 (* (- 256) (div ~isNull_0~0 256))) 0)), 203#(not (= (+ ~isNull_3~0 (* (- 256) (div ~isNull_3~0 256))) 0))]) [2022-07-12 10:23:41,700 INFO L384 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-07-12 10:23:41,700 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-12 10:23:41,701 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-12 10:23:41,701 INFO L387 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-07-12 10:23:41,724 INFO L129 PetriNetUnfolder]: 50/851 cut-off events. [2022-07-12 10:23:41,724 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-07-12 10:23:41,727 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 851 events. 50/851 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5883 event pairs, 10 based on Foata normal form. 0/800 useless extension candidates. Maximal degree in co-relation 543. Up to 46 conditions per place. [2022-07-12 10:23:41,729 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/198 dead transitions. [2022-07-12 10:23:41,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 198 transitions, 463 flow [2022-07-12 10:23:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:23:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:23:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-12 10:23:41,738 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-12 10:23:41,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-12 10:23:41,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-12 10:23:41,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:41,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-12 10:23:41,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-07-12 10:23:41,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:41,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:41,745 INFO L186 Difference]: Start difference. First operand has 187 places, 192 transitions, 412 flow. Second operand 3 states and 591 transitions. [2022-07-12 10:23:41,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 198 transitions, 463 flow [2022-07-12 10:23:41,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:23:41,755 INFO L242 Difference]: Finished difference. Result has 187 places, 195 transitions, 439 flow [2022-07-12 10:23:41,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=187, PETRI_TRANSITIONS=195} [2022-07-12 10:23:41,756 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 0 predicate places. [2022-07-12 10:23:41,757 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 195 transitions, 439 flow [2022-07-12 10:23:41,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:41,757 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:41,758 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:41,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:23:41,758 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:41,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash 977078206, now seen corresponding path program 2 times [2022-07-12 10:23:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:41,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043099862] [2022-07-12 10:23:41,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:41,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:41,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043099862] [2022-07-12 10:23:41,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043099862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:41,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:41,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:23:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6632917] [2022-07-12 10:23:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:23:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:23:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:23:41,832 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-12 10:23:41,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 195 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:41,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:41,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-12 10:23:41,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:41,911 INFO L129 PetriNetUnfolder]: 37/733 cut-off events. [2022-07-12 10:23:41,911 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-07-12 10:23:41,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 733 events. 37/733 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4638 event pairs, 8 based on Foata normal form. 0/692 useless extension candidates. Maximal degree in co-relation 484. Up to 27 conditions per place. [2022-07-12 10:23:41,915 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/201 dead transitions. [2022-07-12 10:23:41,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 201 transitions, 502 flow [2022-07-12 10:23:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:23:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:23:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-12 10:23:41,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-12 10:23:41,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-12 10:23:41,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-12 10:23:41,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:41,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-12 10:23:41,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-07-12 10:23:41,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:41,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:41,921 INFO L186 Difference]: Start difference. First operand has 187 places, 195 transitions, 439 flow. Second operand 3 states and 591 transitions. [2022-07-12 10:23:41,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 201 transitions, 502 flow [2022-07-12 10:23:41,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 201 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:23:41,928 INFO L242 Difference]: Finished difference. Result has 190 places, 198 transitions, 480 flow [2022-07-12 10:23:41,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=190, PETRI_TRANSITIONS=198} [2022-07-12 10:23:41,930 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 3 predicate places. [2022-07-12 10:23:41,930 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 198 transitions, 480 flow [2022-07-12 10:23:41,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:41,931 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:41,931 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:41,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:23:41,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:41,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2000243524, now seen corresponding path program 1 times [2022-07-12 10:23:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:41,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207787854] [2022-07-12 10:23:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:42,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:42,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207787854] [2022-07-12 10:23:42,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207787854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:42,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:42,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:42,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769131423] [2022-07-12 10:23:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:42,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:42,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:42,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:42,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:42,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:42,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 198 transitions, 480 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:42,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:42,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:42,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:42,551 INFO L129 PetriNetUnfolder]: 212/1287 cut-off events. [2022-07-12 10:23:42,551 INFO L130 PetriNetUnfolder]: For 59/79 co-relation queries the response was YES. [2022-07-12 10:23:42,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 1287 events. 212/1287 cut-off events. For 59/79 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9980 event pairs, 88 based on Foata normal form. 1/1223 useless extension candidates. Maximal degree in co-relation 1038. Up to 333 conditions per place. [2022-07-12 10:23:42,558 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 77 selfloop transitions, 5 changer transitions 34/282 dead transitions. [2022-07-12 10:23:42,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 282 transitions, 893 flow [2022-07-12 10:23:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:23:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:23:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4125 transitions. [2022-07-12 10:23:42,565 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8184523809523809 [2022-07-12 10:23:42,566 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4125 transitions. [2022-07-12 10:23:42,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4125 transitions. [2022-07-12 10:23:42,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:42,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4125 transitions. [2022-07-12 10:23:42,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.875) internal successors, (4125), 24 states have internal predecessors, (4125), 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) [2022-07-12 10:23:42,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 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) [2022-07-12 10:23:42,584 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 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) [2022-07-12 10:23:42,584 INFO L186 Difference]: Start difference. First operand has 190 places, 198 transitions, 480 flow. Second operand 24 states and 4125 transitions. [2022-07-12 10:23:42,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 282 transitions, 893 flow [2022-07-12 10:23:42,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 282 transitions, 877 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-12 10:23:42,590 INFO L242 Difference]: Finished difference. Result has 233 places, 202 transitions, 555 flow [2022-07-12 10:23:42,590 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=555, PETRI_PLACES=233, PETRI_TRANSITIONS=202} [2022-07-12 10:23:42,591 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 46 predicate places. [2022-07-12 10:23:42,591 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 202 transitions, 555 flow [2022-07-12 10:23:42,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:42,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:42,592 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:42,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:23:42,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:42,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1874070520, now seen corresponding path program 1 times [2022-07-12 10:23:42,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:42,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921365321] [2022-07-12 10:23:42,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:42,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:42,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921365321] [2022-07-12 10:23:42,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921365321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:42,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:42,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:23:42,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800069384] [2022-07-12 10:23:42,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:42,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:23:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:23:42,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:23:42,631 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-12 10:23:42,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 202 transitions, 555 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:42,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:42,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-12 10:23:42,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:42,705 INFO L129 PetriNetUnfolder]: 54/796 cut-off events. [2022-07-12 10:23:42,705 INFO L130 PetriNetUnfolder]: For 759/774 co-relation queries the response was YES. [2022-07-12 10:23:42,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 796 events. 54/796 cut-off events. For 759/774 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5222 event pairs, 27 based on Foata normal form. 4/754 useless extension candidates. Maximal degree in co-relation 1305. Up to 38 conditions per place. [2022-07-12 10:23:42,711 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/208 dead transitions. [2022-07-12 10:23:42,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 208 transitions, 618 flow [2022-07-12 10:23:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:23:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:23:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-12 10:23:42,713 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-12 10:23:42,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-12 10:23:42,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-12 10:23:42,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:42,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-12 10:23:42,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-07-12 10:23:42,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:42,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:42,716 INFO L186 Difference]: Start difference. First operand has 233 places, 202 transitions, 555 flow. Second operand 3 states and 591 transitions. [2022-07-12 10:23:42,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 208 transitions, 618 flow [2022-07-12 10:23:42,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 208 transitions, 599 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-07-12 10:23:42,724 INFO L242 Difference]: Finished difference. Result has 210 places, 205 transitions, 580 flow [2022-07-12 10:23:42,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=580, PETRI_PLACES=210, PETRI_TRANSITIONS=205} [2022-07-12 10:23:42,725 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 23 predicate places. [2022-07-12 10:23:42,725 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 205 transitions, 580 flow [2022-07-12 10:23:42,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:42,726 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:42,726 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:42,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:23:42,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:42,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash -502961112, now seen corresponding path program 2 times [2022-07-12 10:23:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:42,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151048963] [2022-07-12 10:23:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:42,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:42,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:42,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151048963] [2022-07-12 10:23:42,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151048963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:42,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:42,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420963868] [2022-07-12 10:23:42,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:42,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:42,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:42,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:42,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:42,845 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:42,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 205 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:42,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:42,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:42,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:43,196 INFO L129 PetriNetUnfolder]: 145/1067 cut-off events. [2022-07-12 10:23:43,197 INFO L130 PetriNetUnfolder]: For 786/808 co-relation queries the response was YES. [2022-07-12 10:23:43,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 1067 events. 145/1067 cut-off events. For 786/808 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7876 event pairs, 87 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 1577. Up to 279 conditions per place. [2022-07-12 10:23:43,203 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 5 changer transitions 35/281 dead transitions. [2022-07-12 10:23:43,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 281 transitions, 1160 flow [2022-07-12 10:23:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:23:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:23:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4117 transitions. [2022-07-12 10:23:43,211 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8168650793650793 [2022-07-12 10:23:43,211 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4117 transitions. [2022-07-12 10:23:43,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4117 transitions. [2022-07-12 10:23:43,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:43,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4117 transitions. [2022-07-12 10:23:43,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.54166666666666) internal successors, (4117), 24 states have internal predecessors, (4117), 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) [2022-07-12 10:23:43,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 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) [2022-07-12 10:23:43,229 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 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) [2022-07-12 10:23:43,229 INFO L186 Difference]: Start difference. First operand has 210 places, 205 transitions, 580 flow. Second operand 24 states and 4117 transitions. [2022-07-12 10:23:43,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 281 transitions, 1160 flow [2022-07-12 10:23:43,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 281 transitions, 1144 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-12 10:23:43,237 INFO L242 Difference]: Finished difference. Result has 253 places, 209 transitions, 671 flow [2022-07-12 10:23:43,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=671, PETRI_PLACES=253, PETRI_TRANSITIONS=209} [2022-07-12 10:23:43,239 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 66 predicate places. [2022-07-12 10:23:43,239 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 209 transitions, 671 flow [2022-07-12 10:23:43,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:43,240 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:43,240 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:43,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:23:43,241 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:43,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:43,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1915177424, now seen corresponding path program 3 times [2022-07-12 10:23:43,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:43,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721815359] [2022-07-12 10:23:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:43,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:43,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:43,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721815359] [2022-07-12 10:23:43,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721815359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:43,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:43,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:43,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565151571] [2022-07-12 10:23:43,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:43,401 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:43,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 209 transitions, 671 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:43,403 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:43,403 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:43,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:43,726 INFO L129 PetriNetUnfolder]: 157/1138 cut-off events. [2022-07-12 10:23:43,726 INFO L130 PetriNetUnfolder]: For 3105/3120 co-relation queries the response was YES. [2022-07-12 10:23:43,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 1138 events. 157/1138 cut-off events. For 3105/3120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8636 event pairs, 91 based on Foata normal form. 1/1081 useless extension candidates. Maximal degree in co-relation 2815. Up to 315 conditions per place. [2022-07-12 10:23:43,735 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 57 selfloop transitions, 12 changer transitions 28/266 dead transitions. [2022-07-12 10:23:43,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 266 transitions, 1383 flow [2022-07-12 10:23:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:23:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:23:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3768 transitions. [2022-07-12 10:23:43,741 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8155844155844156 [2022-07-12 10:23:43,741 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3768 transitions. [2022-07-12 10:23:43,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3768 transitions. [2022-07-12 10:23:43,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:43,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3768 transitions. [2022-07-12 10:23:43,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.27272727272728) internal successors, (3768), 22 states have internal predecessors, (3768), 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) [2022-07-12 10:23:43,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 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) [2022-07-12 10:23:43,756 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 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) [2022-07-12 10:23:43,756 INFO L186 Difference]: Start difference. First operand has 253 places, 209 transitions, 671 flow. Second operand 22 states and 3768 transitions. [2022-07-12 10:23:43,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 266 transitions, 1383 flow [2022-07-12 10:23:43,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 266 transitions, 1128 flow, removed 126 selfloop flow, removed 10 redundant places. [2022-07-12 10:23:43,771 INFO L242 Difference]: Finished difference. Result has 261 places, 219 transitions, 758 flow [2022-07-12 10:23:43,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=758, PETRI_PLACES=261, PETRI_TRANSITIONS=219} [2022-07-12 10:23:43,771 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 74 predicate places. [2022-07-12 10:23:43,772 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 219 transitions, 758 flow [2022-07-12 10:23:43,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:43,772 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:43,773 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:43,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:23:43,773 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1894136750, now seen corresponding path program 4 times [2022-07-12 10:23:43,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:43,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710796699] [2022-07-12 10:23:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:43,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710796699] [2022-07-12 10:23:43,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710796699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:43,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:43,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:43,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632789591] [2022-07-12 10:23:43,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:43,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:43,884 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:43,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 219 transitions, 758 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:43,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:43,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:43,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:44,239 INFO L129 PetriNetUnfolder]: 173/1191 cut-off events. [2022-07-12 10:23:44,240 INFO L130 PetriNetUnfolder]: For 2873/2890 co-relation queries the response was YES. [2022-07-12 10:23:44,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 1191 events. 173/1191 cut-off events. For 2873/2890 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9198 event pairs, 101 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 2970. Up to 329 conditions per place. [2022-07-12 10:23:44,250 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 60 selfloop transitions, 17 changer transitions 28/274 dead transitions. [2022-07-12 10:23:44,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 274 transitions, 1465 flow [2022-07-12 10:23:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:23:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:23:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3603 transitions. [2022-07-12 10:23:44,258 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170068027210884 [2022-07-12 10:23:44,258 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3603 transitions. [2022-07-12 10:23:44,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3603 transitions. [2022-07-12 10:23:44,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:44,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3603 transitions. [2022-07-12 10:23:44,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.57142857142858) internal successors, (3603), 21 states have internal predecessors, (3603), 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) [2022-07-12 10:23:44,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 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) [2022-07-12 10:23:44,271 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 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) [2022-07-12 10:23:44,272 INFO L186 Difference]: Start difference. First operand has 261 places, 219 transitions, 758 flow. Second operand 21 states and 3603 transitions. [2022-07-12 10:23:44,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 274 transitions, 1465 flow [2022-07-12 10:23:44,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 274 transitions, 1315 flow, removed 75 selfloop flow, removed 17 redundant places. [2022-07-12 10:23:44,285 INFO L242 Difference]: Finished difference. Result has 267 places, 229 transitions, 916 flow [2022-07-12 10:23:44,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=916, PETRI_PLACES=267, PETRI_TRANSITIONS=229} [2022-07-12 10:23:44,286 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 80 predicate places. [2022-07-12 10:23:44,286 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 229 transitions, 916 flow [2022-07-12 10:23:44,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:44,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:44,287 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:44,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:23:44,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:44,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash -841789276, now seen corresponding path program 5 times [2022-07-12 10:23:44,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:44,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682906378] [2022-07-12 10:23:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:44,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:44,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:44,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682906378] [2022-07-12 10:23:44,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682906378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:44,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:44,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802936973] [2022-07-12 10:23:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:44,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:44,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:44,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 229 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:44,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:44,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:44,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:44,674 INFO L129 PetriNetUnfolder]: 169/1221 cut-off events. [2022-07-12 10:23:44,675 INFO L130 PetriNetUnfolder]: For 2708/2731 co-relation queries the response was YES. [2022-07-12 10:23:44,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 1221 events. 169/1221 cut-off events. For 2708/2731 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9568 event pairs, 106 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 3009. Up to 317 conditions per place. [2022-07-12 10:23:44,685 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 23 changer transitions 28/279 dead transitions. [2022-07-12 10:23:44,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 279 transitions, 1689 flow [2022-07-12 10:23:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3433 transitions. [2022-07-12 10:23:44,690 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8173809523809524 [2022-07-12 10:23:44,690 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3433 transitions. [2022-07-12 10:23:44,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3433 transitions. [2022-07-12 10:23:44,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:44,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3433 transitions. [2022-07-12 10:23:44,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.65) internal successors, (3433), 20 states have internal predecessors, (3433), 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) [2022-07-12 10:23:44,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:44,701 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:44,701 INFO L186 Difference]: Start difference. First operand has 267 places, 229 transitions, 916 flow. Second operand 20 states and 3433 transitions. [2022-07-12 10:23:44,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 279 transitions, 1689 flow [2022-07-12 10:23:44,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 279 transitions, 1567 flow, removed 56 selfloop flow, removed 10 redundant places. [2022-07-12 10:23:44,714 INFO L242 Difference]: Finished difference. Result has 280 places, 237 transitions, 1092 flow [2022-07-12 10:23:44,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1092, PETRI_PLACES=280, PETRI_TRANSITIONS=237} [2022-07-12 10:23:44,716 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-07-12 10:23:44,716 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 237 transitions, 1092 flow [2022-07-12 10:23:44,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:44,717 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:44,717 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:44,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:23:44,717 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:44,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1787339340, now seen corresponding path program 6 times [2022-07-12 10:23:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:44,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231594608] [2022-07-12 10:23:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:44,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:44,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:44,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231594608] [2022-07-12 10:23:44,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231594608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:44,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:44,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85166261] [2022-07-12 10:23:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:44,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:44,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:44,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:44,818 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:44,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 237 transitions, 1092 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:44,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:44,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:44,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:45,101 INFO L129 PetriNetUnfolder]: 164/1194 cut-off events. [2022-07-12 10:23:45,102 INFO L130 PetriNetUnfolder]: For 3429/3453 co-relation queries the response was YES. [2022-07-12 10:23:45,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 1194 events. 164/1194 cut-off events. For 3429/3453 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9313 event pairs, 98 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 3102. Up to 340 conditions per place. [2022-07-12 10:23:45,112 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 68 selfloop transitions, 22 changer transitions 32/291 dead transitions. [2022-07-12 10:23:45,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 291 transitions, 1994 flow [2022-07-12 10:23:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3429 transitions. [2022-07-12 10:23:45,116 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8164285714285714 [2022-07-12 10:23:45,116 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3429 transitions. [2022-07-12 10:23:45,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3429 transitions. [2022-07-12 10:23:45,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:45,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3429 transitions. [2022-07-12 10:23:45,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.45) internal successors, (3429), 20 states have internal predecessors, (3429), 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) [2022-07-12 10:23:45,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:45,128 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:45,128 INFO L186 Difference]: Start difference. First operand has 280 places, 237 transitions, 1092 flow. Second operand 20 states and 3429 transitions. [2022-07-12 10:23:45,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 291 transitions, 1994 flow [2022-07-12 10:23:45,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 291 transitions, 1848 flow, removed 62 selfloop flow, removed 10 redundant places. [2022-07-12 10:23:45,146 INFO L242 Difference]: Finished difference. Result has 292 places, 244 transitions, 1215 flow [2022-07-12 10:23:45,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1215, PETRI_PLACES=292, PETRI_TRANSITIONS=244} [2022-07-12 10:23:45,147 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 105 predicate places. [2022-07-12 10:23:45,147 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 244 transitions, 1215 flow [2022-07-12 10:23:45,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:45,148 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:45,148 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:45,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:23:45,149 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:45,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:45,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1332304252, now seen corresponding path program 7 times [2022-07-12 10:23:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:45,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092216257] [2022-07-12 10:23:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:45,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:45,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:45,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092216257] [2022-07-12 10:23:45,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092216257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:45,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:45,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:45,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130855256] [2022-07-12 10:23:45,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:45,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:45,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:45,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:45,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:45,262 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:45,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 244 transitions, 1215 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:45,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:45,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:45,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:45,550 INFO L129 PetriNetUnfolder]: 159/1156 cut-off events. [2022-07-12 10:23:45,550 INFO L130 PetriNetUnfolder]: For 3307/3333 co-relation queries the response was YES. [2022-07-12 10:23:45,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3139 conditions, 1156 events. 159/1156 cut-off events. For 3307/3333 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8922 event pairs, 91 based on Foata normal form. 7/1105 useless extension candidates. Maximal degree in co-relation 2977. Up to 330 conditions per place. [2022-07-12 10:23:45,561 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 67 selfloop transitions, 27 changer transitions 22/285 dead transitions. [2022-07-12 10:23:45,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 285 transitions, 1955 flow [2022-07-12 10:23:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-07-12 10:23:45,566 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-07-12 10:23:45,566 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-07-12 10:23:45,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-07-12 10:23:45,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:45,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-07-12 10:23:45,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 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) [2022-07-12 10:23:45,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:45,578 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:45,578 INFO L186 Difference]: Start difference. First operand has 292 places, 244 transitions, 1215 flow. Second operand 18 states and 3088 transitions. [2022-07-12 10:23:45,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 285 transitions, 1955 flow [2022-07-12 10:23:45,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 285 transitions, 1790 flow, removed 59 selfloop flow, removed 14 redundant places. [2022-07-12 10:23:45,596 INFO L242 Difference]: Finished difference. Result has 292 places, 251 transitions, 1305 flow [2022-07-12 10:23:45,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1305, PETRI_PLACES=292, PETRI_TRANSITIONS=251} [2022-07-12 10:23:45,597 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 105 predicate places. [2022-07-12 10:23:45,597 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 251 transitions, 1305 flow [2022-07-12 10:23:45,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:45,598 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:45,598 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:23:45,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:45,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash -634262104, now seen corresponding path program 8 times [2022-07-12 10:23:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:45,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221074415] [2022-07-12 10:23:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:45,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:45,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:45,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221074415] [2022-07-12 10:23:45,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221074415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:45,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:45,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:45,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737608618] [2022-07-12 10:23:45,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:45,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:45,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:45,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:45,686 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:45,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 251 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:45,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:45,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:45,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:45,950 INFO L129 PetriNetUnfolder]: 149/1118 cut-off events. [2022-07-12 10:23:45,951 INFO L130 PetriNetUnfolder]: For 2822/2850 co-relation queries the response was YES. [2022-07-12 10:23:45,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2988 conditions, 1118 events. 149/1118 cut-off events. For 2822/2850 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8537 event pairs, 91 based on Foata normal form. 7/1067 useless extension candidates. Maximal degree in co-relation 2829. Up to 324 conditions per place. [2022-07-12 10:23:45,961 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 30/274 dead transitions. [2022-07-12 10:23:45,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 274 transitions, 1785 flow [2022-07-12 10:23:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:23:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:23:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2747 transitions. [2022-07-12 10:23:45,964 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8175595238095238 [2022-07-12 10:23:45,964 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2747 transitions. [2022-07-12 10:23:45,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2747 transitions. [2022-07-12 10:23:45,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:45,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2747 transitions. [2022-07-12 10:23:45,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.6875) internal successors, (2747), 16 states have internal predecessors, (2747), 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) [2022-07-12 10:23:45,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 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) [2022-07-12 10:23:45,972 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 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) [2022-07-12 10:23:45,972 INFO L186 Difference]: Start difference. First operand has 292 places, 251 transitions, 1305 flow. Second operand 16 states and 2747 transitions. [2022-07-12 10:23:45,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 274 transitions, 1785 flow [2022-07-12 10:23:45,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 274 transitions, 1716 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-07-12 10:23:45,989 INFO L242 Difference]: Finished difference. Result has 295 places, 235 transitions, 1060 flow [2022-07-12 10:23:45,989 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1060, PETRI_PLACES=295, PETRI_TRANSITIONS=235} [2022-07-12 10:23:45,991 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-12 10:23:45,991 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 235 transitions, 1060 flow [2022-07-12 10:23:45,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:45,992 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:45,992 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:45,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:23:45,992 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1061997622, now seen corresponding path program 9 times [2022-07-12 10:23:45,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:45,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532219410] [2022-07-12 10:23:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:45,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:46,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:46,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:46,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532219410] [2022-07-12 10:23:46,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532219410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:46,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:46,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060784445] [2022-07-12 10:23:46,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:46,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:46,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:46,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:46,087 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:46,096 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 235 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:46,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:46,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:46,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:46,354 INFO L129 PetriNetUnfolder]: 152/1116 cut-off events. [2022-07-12 10:23:46,354 INFO L130 PetriNetUnfolder]: For 2893/2917 co-relation queries the response was YES. [2022-07-12 10:23:46,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 1116 events. 152/1116 cut-off events. For 2893/2917 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8455 event pairs, 95 based on Foata normal form. 3/1060 useless extension candidates. Maximal degree in co-relation 2907. Up to 324 conditions per place. [2022-07-12 10:23:46,364 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 58 selfloop transitions, 23 changer transitions 21/271 dead transitions. [2022-07-12 10:23:46,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 271 transitions, 1714 flow [2022-07-12 10:23:46,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:46,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3089 transitions. [2022-07-12 10:23:46,369 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8171957671957671 [2022-07-12 10:23:46,369 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3089 transitions. [2022-07-12 10:23:46,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3089 transitions. [2022-07-12 10:23:46,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:46,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3089 transitions. [2022-07-12 10:23:46,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.61111111111111) internal successors, (3089), 18 states have internal predecessors, (3089), 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) [2022-07-12 10:23:46,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:46,377 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:46,377 INFO L186 Difference]: Start difference. First operand has 295 places, 235 transitions, 1060 flow. Second operand 18 states and 3089 transitions. [2022-07-12 10:23:46,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 271 transitions, 1714 flow [2022-07-12 10:23:46,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 271 transitions, 1586 flow, removed 25 selfloop flow, removed 16 redundant places. [2022-07-12 10:23:46,391 INFO L242 Difference]: Finished difference. Result has 284 places, 244 transitions, 1201 flow [2022-07-12 10:23:46,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1201, PETRI_PLACES=284, PETRI_TRANSITIONS=244} [2022-07-12 10:23:46,392 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2022-07-12 10:23:46,393 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 244 transitions, 1201 flow [2022-07-12 10:23:46,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:46,393 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:46,393 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:46,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:23:46,394 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:46,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:46,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1404461984, now seen corresponding path program 10 times [2022-07-12 10:23:46,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:46,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61263] [2022-07-12 10:23:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:46,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:46,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:46,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61263] [2022-07-12 10:23:46,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:46,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:46,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:46,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422318446] [2022-07-12 10:23:46,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:46,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:46,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:46,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:46,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:46,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:46,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 244 transitions, 1201 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:46,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:46,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:46,481 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:46,761 INFO L129 PetriNetUnfolder]: 149/1139 cut-off events. [2022-07-12 10:23:46,762 INFO L130 PetriNetUnfolder]: For 2428/2447 co-relation queries the response was YES. [2022-07-12 10:23:46,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 1139 events. 149/1139 cut-off events. For 2428/2447 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8744 event pairs, 96 based on Foata normal form. 1/1080 useless extension candidates. Maximal degree in co-relation 2880. Up to 324 conditions per place. [2022-07-12 10:23:46,772 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 24 changer transitions 22/274 dead transitions. [2022-07-12 10:23:46,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 274 transitions, 1780 flow [2022-07-12 10:23:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2921 transitions. [2022-07-12 10:23:46,774 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8182072829131652 [2022-07-12 10:23:46,775 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2921 transitions. [2022-07-12 10:23:46,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2921 transitions. [2022-07-12 10:23:46,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:46,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2921 transitions. [2022-07-12 10:23:46,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.8235294117647) internal successors, (2921), 17 states have internal predecessors, (2921), 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) [2022-07-12 10:23:46,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:46,782 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:46,782 INFO L186 Difference]: Start difference. First operand has 284 places, 244 transitions, 1201 flow. Second operand 17 states and 2921 transitions. [2022-07-12 10:23:46,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 274 transitions, 1780 flow [2022-07-12 10:23:46,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 274 transitions, 1737 flow, removed 16 selfloop flow, removed 5 redundant places. [2022-07-12 10:23:46,796 INFO L242 Difference]: Finished difference. Result has 295 places, 247 transitions, 1304 flow [2022-07-12 10:23:46,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1304, PETRI_PLACES=295, PETRI_TRANSITIONS=247} [2022-07-12 10:23:46,797 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-12 10:23:46,798 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 247 transitions, 1304 flow [2022-07-12 10:23:46,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:46,798 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:46,798 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:46,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:23:46,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:46,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2017029460, now seen corresponding path program 11 times [2022-07-12 10:23:46,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:46,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92699768] [2022-07-12 10:23:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:46,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92699768] [2022-07-12 10:23:46,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92699768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:46,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:46,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:46,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550179417] [2022-07-12 10:23:46,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:46,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:46,887 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:46,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 247 transitions, 1304 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:46,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:46,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:46,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:47,145 INFO L129 PetriNetUnfolder]: 146/1118 cut-off events. [2022-07-12 10:23:47,145 INFO L130 PetriNetUnfolder]: For 2580/2602 co-relation queries the response was YES. [2022-07-12 10:23:47,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1118 events. 146/1118 cut-off events. For 2580/2602 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8501 event pairs, 94 based on Foata normal form. 3/1061 useless extension candidates. Maximal degree in co-relation 2846. Up to 324 conditions per place. [2022-07-12 10:23:47,157 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 58 selfloop transitions, 15 changer transitions 29/271 dead transitions. [2022-07-12 10:23:47,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 271 transitions, 1767 flow [2022-07-12 10:23:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-07-12 10:23:47,160 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-07-12 10:23:47,160 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-07-12 10:23:47,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-07-12 10:23:47,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:47,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-07-12 10:23:47,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 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) [2022-07-12 10:23:47,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:47,168 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:47,168 INFO L186 Difference]: Start difference. First operand has 295 places, 247 transitions, 1304 flow. Second operand 18 states and 3088 transitions. [2022-07-12 10:23:47,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 271 transitions, 1767 flow [2022-07-12 10:23:47,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 271 transitions, 1678 flow, removed 23 selfloop flow, removed 7 redundant places. [2022-07-12 10:23:47,184 INFO L242 Difference]: Finished difference. Result has 305 places, 238 transitions, 1138 flow [2022-07-12 10:23:47,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1138, PETRI_PLACES=305, PETRI_TRANSITIONS=238} [2022-07-12 10:23:47,185 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 118 predicate places. [2022-07-12 10:23:47,185 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 238 transitions, 1138 flow [2022-07-12 10:23:47,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:47,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:47,186 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:23:47,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2112829846, now seen corresponding path program 12 times [2022-07-12 10:23:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:47,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061394175] [2022-07-12 10:23:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:47,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:47,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:47,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061394175] [2022-07-12 10:23:47,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061394175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:47,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:47,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:47,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934955657] [2022-07-12 10:23:47,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:47,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:47,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:47,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:47,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:47,287 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:47,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 238 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:47,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:47,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:47,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:47,516 INFO L129 PetriNetUnfolder]: 136/1071 cut-off events. [2022-07-12 10:23:47,516 INFO L130 PetriNetUnfolder]: For 2294/2316 co-relation queries the response was YES. [2022-07-12 10:23:47,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 1071 events. 136/1071 cut-off events. For 2294/2316 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8002 event pairs, 92 based on Foata normal form. 3/1016 useless extension candidates. Maximal degree in co-relation 2602. Up to 311 conditions per place. [2022-07-12 10:23:47,525 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 49 selfloop transitions, 3 changer transitions 34/255 dead transitions. [2022-07-12 10:23:47,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 255 transitions, 1460 flow [2022-07-12 10:23:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2912 transitions. [2022-07-12 10:23:47,528 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8156862745098039 [2022-07-12 10:23:47,529 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2912 transitions. [2022-07-12 10:23:47,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2912 transitions. [2022-07-12 10:23:47,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:47,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2912 transitions. [2022-07-12 10:23:47,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.2941176470588) internal successors, (2912), 17 states have internal predecessors, (2912), 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) [2022-07-12 10:23:47,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:47,537 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:47,537 INFO L186 Difference]: Start difference. First operand has 305 places, 238 transitions, 1138 flow. Second operand 17 states and 2912 transitions. [2022-07-12 10:23:47,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 255 transitions, 1460 flow [2022-07-12 10:23:47,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 255 transitions, 1334 flow, removed 27 selfloop flow, removed 22 redundant places. [2022-07-12 10:23:47,551 INFO L242 Difference]: Finished difference. Result has 287 places, 218 transitions, 777 flow [2022-07-12 10:23:47,552 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=777, PETRI_PLACES=287, PETRI_TRANSITIONS=218} [2022-07-12 10:23:47,552 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-07-12 10:23:47,553 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 218 transitions, 777 flow [2022-07-12 10:23:47,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:47,554 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:47,555 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:47,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:23:47,555 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1779128098, now seen corresponding path program 13 times [2022-07-12 10:23:47,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:47,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161034798] [2022-07-12 10:23:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:47,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:47,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161034798] [2022-07-12 10:23:47,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161034798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:47,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:47,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:47,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98382489] [2022-07-12 10:23:47,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:47,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:47,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:47,634 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:47,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 218 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:47,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:47,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:47,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:47,937 INFO L129 PetriNetUnfolder]: 141/1110 cut-off events. [2022-07-12 10:23:47,937 INFO L130 PetriNetUnfolder]: For 2085/2099 co-relation queries the response was YES. [2022-07-12 10:23:47,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 1110 events. 141/1110 cut-off events. For 2085/2099 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8451 event pairs, 87 based on Foata normal form. 1/1057 useless extension candidates. Maximal degree in co-relation 2598. Up to 291 conditions per place. [2022-07-12 10:23:47,944 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 19 changer transitions 28/271 dead transitions. [2022-07-12 10:23:47,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 271 transitions, 1568 flow [2022-07-12 10:23:47,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:23:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:23:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3765 transitions. [2022-07-12 10:23:47,947 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.814935064935065 [2022-07-12 10:23:47,947 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3765 transitions. [2022-07-12 10:23:47,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3765 transitions. [2022-07-12 10:23:47,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:47,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3765 transitions. [2022-07-12 10:23:47,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.13636363636363) internal successors, (3765), 22 states have internal predecessors, (3765), 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) [2022-07-12 10:23:47,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 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) [2022-07-12 10:23:47,956 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 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) [2022-07-12 10:23:47,956 INFO L186 Difference]: Start difference. First operand has 287 places, 218 transitions, 777 flow. Second operand 22 states and 3765 transitions. [2022-07-12 10:23:47,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 271 transitions, 1568 flow [2022-07-12 10:23:47,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 271 transitions, 1342 flow, removed 40 selfloop flow, removed 24 redundant places. [2022-07-12 10:23:47,965 INFO L242 Difference]: Finished difference. Result has 269 places, 229 transitions, 884 flow [2022-07-12 10:23:47,966 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=884, PETRI_PLACES=269, PETRI_TRANSITIONS=229} [2022-07-12 10:23:47,966 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 82 predicate places. [2022-07-12 10:23:47,966 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 229 transitions, 884 flow [2022-07-12 10:23:47,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:47,967 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:47,967 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:47,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:23:47,967 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:47,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash 841188992, now seen corresponding path program 14 times [2022-07-12 10:23:47,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:47,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103852429] [2022-07-12 10:23:47,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:47,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:48,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:48,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103852429] [2022-07-12 10:23:48,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103852429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:48,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:48,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:48,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828565134] [2022-07-12 10:23:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:48,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:48,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:48,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:48,048 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:48,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 229 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:48,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:48,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:48,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:48,371 INFO L129 PetriNetUnfolder]: 138/1076 cut-off events. [2022-07-12 10:23:48,372 INFO L130 PetriNetUnfolder]: For 1641/1655 co-relation queries the response was YES. [2022-07-12 10:23:48,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1076 events. 138/1076 cut-off events. For 1641/1655 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8104 event pairs, 88 based on Foata normal form. 1/1021 useless extension candidates. Maximal degree in co-relation 2529. Up to 289 conditions per place. [2022-07-12 10:23:48,381 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 21 changer transitions 28/269 dead transitions. [2022-07-12 10:23:48,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 269 transitions, 1527 flow [2022-07-12 10:23:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:23:48,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:23:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3595 transitions. [2022-07-12 10:23:48,385 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8151927437641724 [2022-07-12 10:23:48,385 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3595 transitions. [2022-07-12 10:23:48,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3595 transitions. [2022-07-12 10:23:48,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:48,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3595 transitions. [2022-07-12 10:23:48,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.1904761904762) internal successors, (3595), 21 states have internal predecessors, (3595), 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) [2022-07-12 10:23:48,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 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) [2022-07-12 10:23:48,397 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 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) [2022-07-12 10:23:48,397 INFO L186 Difference]: Start difference. First operand has 269 places, 229 transitions, 884 flow. Second operand 21 states and 3595 transitions. [2022-07-12 10:23:48,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 269 transitions, 1527 flow [2022-07-12 10:23:48,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 1435 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-07-12 10:23:48,407 INFO L242 Difference]: Finished difference. Result has 278 places, 231 transitions, 977 flow [2022-07-12 10:23:48,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=977, PETRI_PLACES=278, PETRI_TRANSITIONS=231} [2022-07-12 10:23:48,408 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-07-12 10:23:48,408 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 231 transitions, 977 flow [2022-07-12 10:23:48,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:48,409 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:48,409 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:48,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:23:48,409 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:48,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:48,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1052917516, now seen corresponding path program 15 times [2022-07-12 10:23:48,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:48,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617279704] [2022-07-12 10:23:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:48,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:48,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:48,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617279704] [2022-07-12 10:23:48,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617279704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:48,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:48,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160059288] [2022-07-12 10:23:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:48,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:48,494 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:48,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 231 transitions, 977 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:48,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:48,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:48,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:48,762 INFO L129 PetriNetUnfolder]: 135/1085 cut-off events. [2022-07-12 10:23:48,763 INFO L130 PetriNetUnfolder]: For 1994/2008 co-relation queries the response was YES. [2022-07-12 10:23:48,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2659 conditions, 1085 events. 135/1085 cut-off events. For 1994/2008 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8190 event pairs, 85 based on Foata normal form. 1/1031 useless extension candidates. Maximal degree in co-relation 2606. Up to 294 conditions per place. [2022-07-12 10:23:48,771 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 22 changer transitions 25/267 dead transitions. [2022-07-12 10:23:48,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 267 transitions, 1576 flow [2022-07-12 10:23:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:23:48,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:23:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2752 transitions. [2022-07-12 10:23:48,774 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-07-12 10:23:48,774 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2752 transitions. [2022-07-12 10:23:48,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2752 transitions. [2022-07-12 10:23:48,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:48,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2752 transitions. [2022-07-12 10:23:48,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 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) [2022-07-12 10:23:48,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 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) [2022-07-12 10:23:48,780 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 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) [2022-07-12 10:23:48,780 INFO L186 Difference]: Start difference. First operand has 278 places, 231 transitions, 977 flow. Second operand 16 states and 2752 transitions. [2022-07-12 10:23:48,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 267 transitions, 1576 flow [2022-07-12 10:23:48,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 267 transitions, 1449 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-07-12 10:23:48,820 INFO L242 Difference]: Finished difference. Result has 274 places, 236 transitions, 1046 flow [2022-07-12 10:23:48,820 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1046, PETRI_PLACES=274, PETRI_TRANSITIONS=236} [2022-07-12 10:23:48,821 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 87 predicate places. [2022-07-12 10:23:48,821 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 236 transitions, 1046 flow [2022-07-12 10:23:48,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:48,821 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:48,822 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:48,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:23:48,822 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:48,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2048698328, now seen corresponding path program 16 times [2022-07-12 10:23:48,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:48,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426451675] [2022-07-12 10:23:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:48,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:48,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:48,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426451675] [2022-07-12 10:23:48,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426451675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:48,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:48,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:48,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719093884] [2022-07-12 10:23:48,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:48,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:48,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:48,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:48,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:48,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:48,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 236 transitions, 1046 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:48,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:48,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:48,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:49,192 INFO L129 PetriNetUnfolder]: 126/1017 cut-off events. [2022-07-12 10:23:49,193 INFO L130 PetriNetUnfolder]: For 1638/1652 co-relation queries the response was YES. [2022-07-12 10:23:49,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 1017 events. 126/1017 cut-off events. For 1638/1652 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7469 event pairs, 85 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 2392. Up to 288 conditions per place. [2022-07-12 10:23:49,200 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 47 selfloop transitions, 10 changer transitions 30/256 dead transitions. [2022-07-12 10:23:49,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 256 transitions, 1403 flow [2022-07-12 10:23:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-07-12 10:23:49,202 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-07-12 10:23:49,203 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-07-12 10:23:49,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-07-12 10:23:49,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:49,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-07-12 10:23:49,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 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) [2022-07-12 10:23:49,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:49,209 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:49,210 INFO L186 Difference]: Start difference. First operand has 274 places, 236 transitions, 1046 flow. Second operand 18 states and 3082 transitions. [2022-07-12 10:23:49,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 256 transitions, 1403 flow [2022-07-12 10:23:49,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 256 transitions, 1309 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-07-12 10:23:49,220 INFO L242 Difference]: Finished difference. Result has 281 places, 221 transitions, 820 flow [2022-07-12 10:23:49,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=820, PETRI_PLACES=281, PETRI_TRANSITIONS=221} [2022-07-12 10:23:49,221 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 94 predicate places. [2022-07-12 10:23:49,221 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 221 transitions, 820 flow [2022-07-12 10:23:49,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:49,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:49,222 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:49,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:23:49,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:49,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1739090500, now seen corresponding path program 17 times [2022-07-12 10:23:49,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:49,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559144576] [2022-07-12 10:23:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:49,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559144576] [2022-07-12 10:23:49,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559144576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:49,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:49,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:49,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164361815] [2022-07-12 10:23:49,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:49,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:49,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:49,303 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:49,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 221 transitions, 820 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:49,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:49,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:49,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:49,568 INFO L129 PetriNetUnfolder]: 131/1041 cut-off events. [2022-07-12 10:23:49,568 INFO L130 PetriNetUnfolder]: For 1648/1662 co-relation queries the response was YES. [2022-07-12 10:23:49,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 1041 events. 131/1041 cut-off events. For 1648/1662 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7727 event pairs, 86 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 2438. Up to 288 conditions per place. [2022-07-12 10:23:49,575 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 20 changer transitions 23/257 dead transitions. [2022-07-12 10:23:49,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 257 transitions, 1398 flow [2022-07-12 10:23:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-07-12 10:23:49,577 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-12 10:23:49,577 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-07-12 10:23:49,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-07-12 10:23:49,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:49,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-07-12 10:23:49,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 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) [2022-07-12 10:23:49,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:49,584 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:49,584 INFO L186 Difference]: Start difference. First operand has 281 places, 221 transitions, 820 flow. Second operand 18 states and 3087 transitions. [2022-07-12 10:23:49,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 257 transitions, 1398 flow [2022-07-12 10:23:49,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 257 transitions, 1271 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-12 10:23:49,593 INFO L242 Difference]: Finished difference. Result has 267 places, 230 transitions, 956 flow [2022-07-12 10:23:49,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=956, PETRI_PLACES=267, PETRI_TRANSITIONS=230} [2022-07-12 10:23:49,593 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 80 predicate places. [2022-07-12 10:23:49,594 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 230 transitions, 956 flow [2022-07-12 10:23:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:49,594 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:49,594 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:49,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:23:49,595 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:49,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:49,595 INFO L85 PathProgramCache]: Analyzing trace with hash 727369106, now seen corresponding path program 18 times [2022-07-12 10:23:49,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:49,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41348164] [2022-07-12 10:23:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:49,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:49,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:49,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41348164] [2022-07-12 10:23:49,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41348164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:49,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:49,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:49,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729447128] [2022-07-12 10:23:49,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:49,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:49,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:49,674 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:49,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 230 transitions, 956 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:49,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:49,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:49,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:49,907 INFO L129 PetriNetUnfolder]: 127/1040 cut-off events. [2022-07-12 10:23:49,908 INFO L130 PetriNetUnfolder]: For 1515/1529 co-relation queries the response was YES. [2022-07-12 10:23:49,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 1040 events. 127/1040 cut-off events. For 1515/1529 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7702 event pairs, 82 based on Foata normal form. 1/987 useless extension candidates. Maximal degree in co-relation 2402. Up to 288 conditions per place. [2022-07-12 10:23:49,915 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 46 selfloop transitions, 22 changer transitions 24/261 dead transitions. [2022-07-12 10:23:49,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 261 transitions, 1471 flow [2022-07-12 10:23:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-07-12 10:23:49,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-07-12 10:23:49,917 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-07-12 10:23:49,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-07-12 10:23:49,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:49,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-07-12 10:23:49,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 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) [2022-07-12 10:23:49,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:49,923 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:49,923 INFO L186 Difference]: Start difference. First operand has 267 places, 230 transitions, 956 flow. Second operand 17 states and 2919 transitions. [2022-07-12 10:23:49,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 261 transitions, 1471 flow [2022-07-12 10:23:49,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 261 transitions, 1406 flow, removed 28 selfloop flow, removed 5 redundant places. [2022-07-12 10:23:49,934 INFO L242 Difference]: Finished difference. Result has 279 places, 234 transitions, 1060 flow [2022-07-12 10:23:49,934 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1060, PETRI_PLACES=279, PETRI_TRANSITIONS=234} [2022-07-12 10:23:49,935 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 92 predicate places. [2022-07-12 10:23:49,935 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 234 transitions, 1060 flow [2022-07-12 10:23:49,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:49,935 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:49,935 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:49,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:23:49,936 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2024116528, now seen corresponding path program 19 times [2022-07-12 10:23:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:49,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532100466] [2022-07-12 10:23:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:49,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:50,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:50,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532100466] [2022-07-12 10:23:50,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532100466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:50,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:50,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:50,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707155113] [2022-07-12 10:23:50,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:50,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:50,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:50,015 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:50,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 234 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:50,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:50,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:50,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:50,232 INFO L129 PetriNetUnfolder]: 121/1019 cut-off events. [2022-07-12 10:23:50,233 INFO L130 PetriNetUnfolder]: For 1482/1496 co-relation queries the response was YES. [2022-07-12 10:23:50,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 1019 events. 121/1019 cut-off events. For 1482/1496 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7533 event pairs, 82 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 2341. Up to 288 conditions per place. [2022-07-12 10:23:50,240 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 12 changer transitions 29/255 dead transitions. [2022-07-12 10:23:50,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 255 transitions, 1445 flow [2022-07-12 10:23:50,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2914 transitions. [2022-07-12 10:23:50,242 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8162464985994398 [2022-07-12 10:23:50,242 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2914 transitions. [2022-07-12 10:23:50,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2914 transitions. [2022-07-12 10:23:50,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:50,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2914 transitions. [2022-07-12 10:23:50,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.41176470588235) internal successors, (2914), 17 states have internal predecessors, (2914), 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) [2022-07-12 10:23:50,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:50,249 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:50,249 INFO L186 Difference]: Start difference. First operand has 279 places, 234 transitions, 1060 flow. Second operand 17 states and 2914 transitions. [2022-07-12 10:23:50,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 255 transitions, 1445 flow [2022-07-12 10:23:50,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 255 transitions, 1352 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:50,259 INFO L242 Difference]: Finished difference. Result has 285 places, 225 transitions, 893 flow [2022-07-12 10:23:50,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=893, PETRI_PLACES=285, PETRI_TRANSITIONS=225} [2022-07-12 10:23:50,260 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 98 predicate places. [2022-07-12 10:23:50,260 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 225 transitions, 893 flow [2022-07-12 10:23:50,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:50,260 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:50,260 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:50,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:23:50,261 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:50,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1652952068, now seen corresponding path program 20 times [2022-07-12 10:23:50,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:50,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688688965] [2022-07-12 10:23:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:50,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:50,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:50,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688688965] [2022-07-12 10:23:50,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688688965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:50,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:50,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:50,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703092785] [2022-07-12 10:23:50,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:50,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:50,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:50,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:50,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:50,336 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:50,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 225 transitions, 893 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:50,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:50,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:50,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:50,592 INFO L129 PetriNetUnfolder]: 113/913 cut-off events. [2022-07-12 10:23:50,593 INFO L130 PetriNetUnfolder]: For 1155/1169 co-relation queries the response was YES. [2022-07-12 10:23:50,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 913 events. 113/913 cut-off events. For 1155/1169 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6440 event pairs, 82 based on Foata normal form. 1/860 useless extension candidates. Maximal degree in co-relation 2003. Up to 266 conditions per place. [2022-07-12 10:23:50,597 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 30 selfloop transitions, 0 changer transitions 39/234 dead transitions. [2022-07-12 10:23:50,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 234 transitions, 1097 flow [2022-07-12 10:23:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3072 transitions. [2022-07-12 10:23:50,599 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8126984126984127 [2022-07-12 10:23:50,600 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3072 transitions. [2022-07-12 10:23:50,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3072 transitions. [2022-07-12 10:23:50,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:50,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3072 transitions. [2022-07-12 10:23:50,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.66666666666666) internal successors, (3072), 18 states have internal predecessors, (3072), 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) [2022-07-12 10:23:50,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:50,606 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:50,606 INFO L186 Difference]: Start difference. First operand has 285 places, 225 transitions, 893 flow. Second operand 18 states and 3072 transitions. [2022-07-12 10:23:50,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 234 transitions, 1097 flow [2022-07-12 10:23:50,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 234 transitions, 987 flow, removed 24 selfloop flow, removed 23 redundant places. [2022-07-12 10:23:50,613 INFO L242 Difference]: Finished difference. Result has 266 places, 195 transitions, 521 flow [2022-07-12 10:23:50,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=521, PETRI_PLACES=266, PETRI_TRANSITIONS=195} [2022-07-12 10:23:50,614 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-07-12 10:23:50,614 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 195 transitions, 521 flow [2022-07-12 10:23:50,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:50,615 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:50,615 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:50,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:23:50,615 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:50,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1536319502, now seen corresponding path program 1 times [2022-07-12 10:23:50,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:50,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620712414] [2022-07-12 10:23:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:50,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:50,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:50,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620712414] [2022-07-12 10:23:50,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620712414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:50,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:50,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:50,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397443177] [2022-07-12 10:23:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:50,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:50,679 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:50,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 195 transitions, 521 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:50,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:50,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:50,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:50,927 INFO L129 PetriNetUnfolder]: 157/1039 cut-off events. [2022-07-12 10:23:50,928 INFO L130 PetriNetUnfolder]: For 1156/1167 co-relation queries the response was YES. [2022-07-12 10:23:50,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1039 events. 157/1039 cut-off events. For 1156/1167 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7238 event pairs, 76 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 2201. Up to 230 conditions per place. [2022-07-12 10:23:50,934 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 50 selfloop transitions, 12 changer transitions 36/262 dead transitions. [2022-07-12 10:23:50,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 262 transitions, 1120 flow [2022-07-12 10:23:50,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3439 transitions. [2022-07-12 10:23:50,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8188095238095238 [2022-07-12 10:23:50,937 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3439 transitions. [2022-07-12 10:23:50,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3439 transitions. [2022-07-12 10:23:50,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:50,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3439 transitions. [2022-07-12 10:23:50,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.95) internal successors, (3439), 20 states have internal predecessors, (3439), 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) [2022-07-12 10:23:50,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:50,944 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:50,944 INFO L186 Difference]: Start difference. First operand has 266 places, 195 transitions, 521 flow. Second operand 20 states and 3439 transitions. [2022-07-12 10:23:50,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 262 transitions, 1120 flow [2022-07-12 10:23:50,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 262 transitions, 1012 flow, removed 54 selfloop flow, removed 11 redundant places. [2022-07-12 10:23:50,951 INFO L242 Difference]: Finished difference. Result has 248 places, 206 transitions, 642 flow [2022-07-12 10:23:50,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=642, PETRI_PLACES=248, PETRI_TRANSITIONS=206} [2022-07-12 10:23:50,951 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 61 predicate places. [2022-07-12 10:23:50,952 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 206 transitions, 642 flow [2022-07-12 10:23:50,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:50,952 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:50,952 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:50,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:23:50,953 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:50,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:50,953 INFO L85 PathProgramCache]: Analyzing trace with hash -435224234, now seen corresponding path program 2 times [2022-07-12 10:23:50,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:50,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085817741] [2022-07-12 10:23:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:50,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:51,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085817741] [2022-07-12 10:23:51,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085817741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:51,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:51,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:51,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055282230] [2022-07-12 10:23:51,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:51,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:51,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:51,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:51,015 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:51,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 206 transitions, 642 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:51,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:51,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:51,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:51,230 INFO L129 PetriNetUnfolder]: 138/940 cut-off events. [2022-07-12 10:23:51,230 INFO L130 PetriNetUnfolder]: For 1954/1965 co-relation queries the response was YES. [2022-07-12 10:23:51,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2350 conditions, 940 events. 138/940 cut-off events. For 1954/1965 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6387 event pairs, 40 based on Foata normal form. 1/895 useless extension candidates. Maximal degree in co-relation 2302. Up to 117 conditions per place. [2022-07-12 10:23:51,235 INFO L132 encePairwiseOnDemand]: 195/210 looper letters, 32 selfloop transitions, 5 changer transitions 66/261 dead transitions. [2022-07-12 10:23:51,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 261 transitions, 1199 flow [2022-07-12 10:23:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:23:51,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:23:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2423 transitions. [2022-07-12 10:23:51,237 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8241496598639456 [2022-07-12 10:23:51,237 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2423 transitions. [2022-07-12 10:23:51,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2423 transitions. [2022-07-12 10:23:51,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:51,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2423 transitions. [2022-07-12 10:23:51,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 173.07142857142858) internal successors, (2423), 14 states have internal predecessors, (2423), 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) [2022-07-12 10:23:51,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 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) [2022-07-12 10:23:51,241 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 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) [2022-07-12 10:23:51,241 INFO L186 Difference]: Start difference. First operand has 248 places, 206 transitions, 642 flow. Second operand 14 states and 2423 transitions. [2022-07-12 10:23:51,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 261 transitions, 1199 flow [2022-07-12 10:23:51,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 261 transitions, 1077 flow, removed 61 selfloop flow, removed 10 redundant places. [2022-07-12 10:23:51,248 INFO L242 Difference]: Finished difference. Result has 249 places, 188 transitions, 529 flow [2022-07-12 10:23:51,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=529, PETRI_PLACES=249, PETRI_TRANSITIONS=188} [2022-07-12 10:23:51,249 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 62 predicate places. [2022-07-12 10:23:51,249 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 188 transitions, 529 flow [2022-07-12 10:23:51,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:51,249 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:51,250 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:51,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:23:51,250 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:51,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1613387736, now seen corresponding path program 1 times [2022-07-12 10:23:51,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:51,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700381346] [2022-07-12 10:23:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:51,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:51,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:51,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700381346] [2022-07-12 10:23:51,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700381346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:51,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:51,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:51,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395937948] [2022-07-12 10:23:51,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:51,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:51,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:51,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:51,328 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:51,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 188 transitions, 529 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:51,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:51,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:51,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:51,540 INFO L129 PetriNetUnfolder]: 114/807 cut-off events. [2022-07-12 10:23:51,541 INFO L130 PetriNetUnfolder]: For 1781/1786 co-relation queries the response was YES. [2022-07-12 10:23:51,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 807 events. 114/807 cut-off events. For 1781/1786 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5090 event pairs, 46 based on Foata normal form. 1/763 useless extension candidates. Maximal degree in co-relation 1898. Up to 145 conditions per place. [2022-07-12 10:23:51,546 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 49 selfloop transitions, 14 changer transitions 25/244 dead transitions. [2022-07-12 10:23:51,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 244 transitions, 1198 flow [2022-07-12 10:23:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:23:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:23:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2755 transitions. [2022-07-12 10:23:51,548 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8199404761904762 [2022-07-12 10:23:51,548 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2755 transitions. [2022-07-12 10:23:51,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2755 transitions. [2022-07-12 10:23:51,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:51,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2755 transitions. [2022-07-12 10:23:51,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.1875) internal successors, (2755), 16 states have internal predecessors, (2755), 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) [2022-07-12 10:23:51,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 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) [2022-07-12 10:23:51,553 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 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) [2022-07-12 10:23:51,553 INFO L186 Difference]: Start difference. First operand has 249 places, 188 transitions, 529 flow. Second operand 16 states and 2755 transitions. [2022-07-12 10:23:51,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 244 transitions, 1198 flow [2022-07-12 10:23:51,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 244 transitions, 937 flow, removed 126 selfloop flow, removed 17 redundant places. [2022-07-12 10:23:51,559 INFO L242 Difference]: Finished difference. Result has 238 places, 201 transitions, 637 flow [2022-07-12 10:23:51,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=637, PETRI_PLACES=238, PETRI_TRANSITIONS=201} [2022-07-12 10:23:51,559 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 51 predicate places. [2022-07-12 10:23:51,559 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 201 transitions, 637 flow [2022-07-12 10:23:51,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:51,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:51,560 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:51,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:23:51,560 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:51,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:51,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1854629310, now seen corresponding path program 2 times [2022-07-12 10:23:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:51,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425536951] [2022-07-12 10:23:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:51,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:51,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425536951] [2022-07-12 10:23:51,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425536951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:51,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:51,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:51,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713082303] [2022-07-12 10:23:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:51,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:51,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:51,645 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:51,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 201 transitions, 637 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:51,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:51,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:51,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:51,965 INFO L129 PetriNetUnfolder]: 114/789 cut-off events. [2022-07-12 10:23:51,965 INFO L130 PetriNetUnfolder]: For 1250/1253 co-relation queries the response was YES. [2022-07-12 10:23:51,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1860 conditions, 789 events. 114/789 cut-off events. For 1250/1253 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4955 event pairs, 35 based on Foata normal form. 1/753 useless extension candidates. Maximal degree in co-relation 1814. Up to 115 conditions per place. [2022-07-12 10:23:51,970 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 76 selfloop transitions, 11 changer transitions 41/284 dead transitions. [2022-07-12 10:23:51,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 284 transitions, 1438 flow [2022-07-12 10:23:51,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:23:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:23:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4121 transitions. [2022-07-12 10:23:51,973 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176587301587301 [2022-07-12 10:23:51,973 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4121 transitions. [2022-07-12 10:23:51,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4121 transitions. [2022-07-12 10:23:51,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:51,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4121 transitions. [2022-07-12 10:23:51,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.70833333333334) internal successors, (4121), 24 states have internal predecessors, (4121), 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) [2022-07-12 10:23:51,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 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) [2022-07-12 10:23:51,980 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 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) [2022-07-12 10:23:51,980 INFO L186 Difference]: Start difference. First operand has 238 places, 201 transitions, 637 flow. Second operand 24 states and 4121 transitions. [2022-07-12 10:23:51,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 284 transitions, 1438 flow [2022-07-12 10:23:51,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 284 transitions, 1280 flow, removed 78 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:51,987 INFO L242 Difference]: Finished difference. Result has 266 places, 205 transitions, 700 flow [2022-07-12 10:23:51,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=700, PETRI_PLACES=266, PETRI_TRANSITIONS=205} [2022-07-12 10:23:51,991 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-07-12 10:23:51,991 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 205 transitions, 700 flow [2022-07-12 10:23:51,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:51,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:51,992 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:51,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:23:51,992 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:51,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:51,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1019128568, now seen corresponding path program 3 times [2022-07-12 10:23:51,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:51,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689987296] [2022-07-12 10:23:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:51,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:52,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:52,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689987296] [2022-07-12 10:23:52,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689987296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:52,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:52,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:52,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607209396] [2022-07-12 10:23:52,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:52,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:52,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:52,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:52,062 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:52,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 205 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:52,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:52,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:52,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:52,279 INFO L129 PetriNetUnfolder]: 119/809 cut-off events. [2022-07-12 10:23:52,279 INFO L130 PetriNetUnfolder]: For 2499/2502 co-relation queries the response was YES. [2022-07-12 10:23:52,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 809 events. 119/809 cut-off events. For 2499/2502 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5085 event pairs, 41 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 2162. Up to 161 conditions per place. [2022-07-12 10:23:52,285 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 20 changer transitions 25/260 dead transitions. [2022-07-12 10:23:52,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 260 transitions, 1481 flow [2022-07-12 10:23:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:52,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3090 transitions. [2022-07-12 10:23:52,288 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8174603174603174 [2022-07-12 10:23:52,288 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3090 transitions. [2022-07-12 10:23:52,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3090 transitions. [2022-07-12 10:23:52,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:52,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3090 transitions. [2022-07-12 10:23:52,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.66666666666666) internal successors, (3090), 18 states have internal predecessors, (3090), 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) [2022-07-12 10:23:52,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:52,293 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:52,293 INFO L186 Difference]: Start difference. First operand has 266 places, 205 transitions, 700 flow. Second operand 18 states and 3090 transitions. [2022-07-12 10:23:52,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 260 transitions, 1481 flow [2022-07-12 10:23:52,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 260 transitions, 1281 flow, removed 97 selfloop flow, removed 15 redundant places. [2022-07-12 10:23:52,302 INFO L242 Difference]: Finished difference. Result has 261 places, 219 transitions, 891 flow [2022-07-12 10:23:52,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=891, PETRI_PLACES=261, PETRI_TRANSITIONS=219} [2022-07-12 10:23:52,303 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 74 predicate places. [2022-07-12 10:23:52,303 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 219 transitions, 891 flow [2022-07-12 10:23:52,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:52,303 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:52,303 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:52,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:23:52,304 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:52,304 INFO L85 PathProgramCache]: Analyzing trace with hash -95394206, now seen corresponding path program 4 times [2022-07-12 10:23:52,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:52,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071071241] [2022-07-12 10:23:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:52,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:52,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:52,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071071241] [2022-07-12 10:23:52,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071071241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:52,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:52,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:52,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124816562] [2022-07-12 10:23:52,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:52,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:52,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:52,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:52,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:52,379 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:52,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 219 transitions, 891 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:52,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:52,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:52,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:52,670 INFO L129 PetriNetUnfolder]: 144/879 cut-off events. [2022-07-12 10:23:52,670 INFO L130 PetriNetUnfolder]: For 2378/2384 co-relation queries the response was YES. [2022-07-12 10:23:52,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 879 events. 144/879 cut-off events. For 2378/2384 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5688 event pairs, 51 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 2470. Up to 154 conditions per place. [2022-07-12 10:23:52,675 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 20 changer transitions 33/283 dead transitions. [2022-07-12 10:23:52,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 283 transitions, 1771 flow [2022-07-12 10:23:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:52,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:52,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3435 transitions. [2022-07-12 10:23:52,677 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2022-07-12 10:23:52,677 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3435 transitions. [2022-07-12 10:23:52,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3435 transitions. [2022-07-12 10:23:52,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:52,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3435 transitions. [2022-07-12 10:23:52,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.75) internal successors, (3435), 20 states have internal predecessors, (3435), 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) [2022-07-12 10:23:52,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:52,682 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:52,682 INFO L186 Difference]: Start difference. First operand has 261 places, 219 transitions, 891 flow. Second operand 20 states and 3435 transitions. [2022-07-12 10:23:52,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 283 transitions, 1771 flow [2022-07-12 10:23:52,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 283 transitions, 1551 flow, removed 106 selfloop flow, removed 11 redundant places. [2022-07-12 10:23:52,691 INFO L242 Difference]: Finished difference. Result has 277 places, 230 transitions, 1012 flow [2022-07-12 10:23:52,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1012, PETRI_PLACES=277, PETRI_TRANSITIONS=230} [2022-07-12 10:23:52,692 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 90 predicate places. [2022-07-12 10:23:52,692 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 230 transitions, 1012 flow [2022-07-12 10:23:52,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:52,693 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:52,693 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:52,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:23:52,693 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:52,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:52,694 INFO L85 PathProgramCache]: Analyzing trace with hash -875030552, now seen corresponding path program 5 times [2022-07-12 10:23:52,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:52,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077824364] [2022-07-12 10:23:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:52,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:52,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077824364] [2022-07-12 10:23:52,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077824364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:52,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:52,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:52,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584916152] [2022-07-12 10:23:52,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:52,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:52,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:52,771 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:52,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 230 transitions, 1012 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:52,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:52,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:52,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:53,079 INFO L129 PetriNetUnfolder]: 140/880 cut-off events. [2022-07-12 10:23:53,079 INFO L130 PetriNetUnfolder]: For 2658/2670 co-relation queries the response was YES. [2022-07-12 10:23:53,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 880 events. 140/880 cut-off events. For 2658/2670 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5785 event pairs, 42 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 2528. Up to 116 conditions per place. [2022-07-12 10:23:53,087 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 96 selfloop transitions, 25 changer transitions 42/319 dead transitions. [2022-07-12 10:23:53,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 319 transitions, 2236 flow [2022-07-12 10:23:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 10:23:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-12 10:23:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4119 transitions. [2022-07-12 10:23:53,090 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8172619047619047 [2022-07-12 10:23:53,090 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4119 transitions. [2022-07-12 10:23:53,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4119 transitions. [2022-07-12 10:23:53,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:53,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4119 transitions. [2022-07-12 10:23:53,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.625) internal successors, (4119), 24 states have internal predecessors, (4119), 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) [2022-07-12 10:23:53,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 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) [2022-07-12 10:23:53,096 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 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) [2022-07-12 10:23:53,096 INFO L186 Difference]: Start difference. First operand has 277 places, 230 transitions, 1012 flow. Second operand 24 states and 4119 transitions. [2022-07-12 10:23:53,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 319 transitions, 2236 flow [2022-07-12 10:23:53,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 319 transitions, 2050 flow, removed 86 selfloop flow, removed 12 redundant places. [2022-07-12 10:23:53,109 INFO L242 Difference]: Finished difference. Result has 295 places, 232 transitions, 1102 flow [2022-07-12 10:23:53,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1102, PETRI_PLACES=295, PETRI_TRANSITIONS=232} [2022-07-12 10:23:53,110 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-12 10:23:53,110 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 232 transitions, 1102 flow [2022-07-12 10:23:53,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:53,110 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:53,111 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:53,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:23:53,111 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 307829718, now seen corresponding path program 6 times [2022-07-12 10:23:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:53,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765931826] [2022-07-12 10:23:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:53,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:53,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:53,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765931826] [2022-07-12 10:23:53,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765931826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:53,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:53,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:53,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443131870] [2022-07-12 10:23:53,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:53,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:53,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:53,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:53,185 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:53,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 232 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:53,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:53,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:53,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:53,483 INFO L129 PetriNetUnfolder]: 139/945 cut-off events. [2022-07-12 10:23:53,483 INFO L130 PetriNetUnfolder]: For 2926/2935 co-relation queries the response was YES. [2022-07-12 10:23:53,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2754 conditions, 945 events. 139/945 cut-off events. For 2926/2935 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6551 event pairs, 45 based on Foata normal form. 5/908 useless extension candidates. Maximal degree in co-relation 2683. Up to 177 conditions per place. [2022-07-12 10:23:53,490 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 23 changer transitions 33/282 dead transitions. [2022-07-12 10:23:53,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 282 transitions, 1873 flow [2022-07-12 10:23:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:23:53,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:23:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3766 transitions. [2022-07-12 10:23:53,492 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2022-07-12 10:23:53,492 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3766 transitions. [2022-07-12 10:23:53,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3766 transitions. [2022-07-12 10:23:53,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:53,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3766 transitions. [2022-07-12 10:23:53,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.1818181818182) internal successors, (3766), 22 states have internal predecessors, (3766), 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) [2022-07-12 10:23:53,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 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) [2022-07-12 10:23:53,499 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 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) [2022-07-12 10:23:53,499 INFO L186 Difference]: Start difference. First operand has 295 places, 232 transitions, 1102 flow. Second operand 22 states and 3766 transitions. [2022-07-12 10:23:53,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 282 transitions, 1873 flow [2022-07-12 10:23:53,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 282 transitions, 1782 flow, removed 24 selfloop flow, removed 17 redundant places. [2022-07-12 10:23:53,510 INFO L242 Difference]: Finished difference. Result has 297 places, 236 transitions, 1196 flow [2022-07-12 10:23:53,510 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1196, PETRI_PLACES=297, PETRI_TRANSITIONS=236} [2022-07-12 10:23:53,511 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2022-07-12 10:23:53,511 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 236 transitions, 1196 flow [2022-07-12 10:23:53,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:53,511 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:53,511 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:53,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:23:53,512 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 3506552, now seen corresponding path program 7 times [2022-07-12 10:23:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:53,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533124253] [2022-07-12 10:23:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:53,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:53,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:53,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533124253] [2022-07-12 10:23:53,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533124253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:53,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:53,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:53,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348069552] [2022-07-12 10:23:53,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:53,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:53,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:53,584 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:53,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 236 transitions, 1196 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:53,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:53,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:53,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:53,891 INFO L129 PetriNetUnfolder]: 135/942 cut-off events. [2022-07-12 10:23:53,891 INFO L130 PetriNetUnfolder]: For 3558/3572 co-relation queries the response was YES. [2022-07-12 10:23:53,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 942 events. 135/942 cut-off events. For 3558/3572 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6579 event pairs, 42 based on Foata normal form. 2/905 useless extension candidates. Maximal degree in co-relation 2764. Up to 169 conditions per place. [2022-07-12 10:23:53,899 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 84 selfloop transitions, 23 changer transitions 33/296 dead transitions. [2022-07-12 10:23:53,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 296 transitions, 2272 flow [2022-07-12 10:23:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:23:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:23:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3604 transitions. [2022-07-12 10:23:53,903 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8172335600907029 [2022-07-12 10:23:53,903 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3604 transitions. [2022-07-12 10:23:53,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3604 transitions. [2022-07-12 10:23:53,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:53,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3604 transitions. [2022-07-12 10:23:53,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.61904761904762) internal successors, (3604), 21 states have internal predecessors, (3604), 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) [2022-07-12 10:23:53,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 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) [2022-07-12 10:23:53,909 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 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) [2022-07-12 10:23:53,909 INFO L186 Difference]: Start difference. First operand has 297 places, 236 transitions, 1196 flow. Second operand 21 states and 3604 transitions. [2022-07-12 10:23:53,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 296 transitions, 2272 flow [2022-07-12 10:23:53,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 296 transitions, 2082 flow, removed 79 selfloop flow, removed 14 redundant places. [2022-07-12 10:23:53,922 INFO L242 Difference]: Finished difference. Result has 305 places, 246 transitions, 1401 flow [2022-07-12 10:23:53,922 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1401, PETRI_PLACES=305, PETRI_TRANSITIONS=246} [2022-07-12 10:23:53,923 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 118 predicate places. [2022-07-12 10:23:53,923 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 246 transitions, 1401 flow [2022-07-12 10:23:53,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:53,923 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:53,923 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:53,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 10:23:53,924 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1512253328, now seen corresponding path program 8 times [2022-07-12 10:23:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:53,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592392381] [2022-07-12 10:23:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:53,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:53,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:53,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592392381] [2022-07-12 10:23:53,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592392381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:53,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:53,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:53,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624594804] [2022-07-12 10:23:53,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:53,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:53,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:53,999 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:54,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 246 transitions, 1401 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:54,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:54,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:54,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:54,250 INFO L129 PetriNetUnfolder]: 117/814 cut-off events. [2022-07-12 10:23:54,251 INFO L130 PetriNetUnfolder]: For 3007/3035 co-relation queries the response was YES. [2022-07-12 10:23:54,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 814 events. 117/814 cut-off events. For 3007/3035 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5282 event pairs, 39 based on Foata normal form. 11/784 useless extension candidates. Maximal degree in co-relation 2377. Up to 169 conditions per place. [2022-07-12 10:23:54,256 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 15 changer transitions 30/267 dead transitions. [2022-07-12 10:23:54,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 267 transitions, 1817 flow [2022-07-12 10:23:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:23:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:23:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2744 transitions. [2022-07-12 10:23:54,258 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-12 10:23:54,258 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2744 transitions. [2022-07-12 10:23:54,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2744 transitions. [2022-07-12 10:23:54,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:54,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2744 transitions. [2022-07-12 10:23:54,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5) internal successors, (2744), 16 states have internal predecessors, (2744), 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) [2022-07-12 10:23:54,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 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) [2022-07-12 10:23:54,262 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 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) [2022-07-12 10:23:54,263 INFO L186 Difference]: Start difference. First operand has 305 places, 246 transitions, 1401 flow. Second operand 16 states and 2744 transitions. [2022-07-12 10:23:54,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 267 transitions, 1817 flow [2022-07-12 10:23:54,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 267 transitions, 1710 flow, removed 50 selfloop flow, removed 11 redundant places. [2022-07-12 10:23:54,274 INFO L242 Difference]: Finished difference. Result has 301 places, 230 transitions, 1133 flow [2022-07-12 10:23:54,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1133, PETRI_PLACES=301, PETRI_TRANSITIONS=230} [2022-07-12 10:23:54,275 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-07-12 10:23:54,275 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 230 transitions, 1133 flow [2022-07-12 10:23:54,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:54,275 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:54,275 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:54,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 10:23:54,276 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1924249166, now seen corresponding path program 9 times [2022-07-12 10:23:54,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:54,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675959839] [2022-07-12 10:23:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:54,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:54,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:54,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675959839] [2022-07-12 10:23:54,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675959839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:54,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:54,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666578689] [2022-07-12 10:23:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:54,348 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:54,349 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 230 transitions, 1133 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:54,349 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:54,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:54,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:54,609 INFO L129 PetriNetUnfolder]: 115/854 cut-off events. [2022-07-12 10:23:54,609 INFO L130 PetriNetUnfolder]: For 2534/2542 co-relation queries the response was YES. [2022-07-12 10:23:54,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 854 events. 115/854 cut-off events. For 2534/2542 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5731 event pairs, 42 based on Foata normal form. 1/813 useless extension candidates. Maximal degree in co-relation 2383. Up to 170 conditions per place. [2022-07-12 10:23:54,616 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 19 changer transitions 33/280 dead transitions. [2022-07-12 10:23:54,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 280 transitions, 2012 flow [2022-07-12 10:23:54,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:23:54,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-12 10:23:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-07-12 10:23:54,633 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-12 10:23:54,633 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-07-12 10:23:54,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-07-12 10:23:54,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:54,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-07-12 10:23:54,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 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) [2022-07-12 10:23:54,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:54,638 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 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) [2022-07-12 10:23:54,638 INFO L186 Difference]: Start difference. First operand has 301 places, 230 transitions, 1133 flow. Second operand 20 states and 3430 transitions. [2022-07-12 10:23:54,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 280 transitions, 2012 flow [2022-07-12 10:23:54,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 280 transitions, 1863 flow, removed 25 selfloop flow, removed 13 redundant places. [2022-07-12 10:23:54,650 INFO L242 Difference]: Finished difference. Result has 301 places, 237 transitions, 1250 flow [2022-07-12 10:23:54,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1250, PETRI_PLACES=301, PETRI_TRANSITIONS=237} [2022-07-12 10:23:54,650 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-07-12 10:23:54,651 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 237 transitions, 1250 flow [2022-07-12 10:23:54,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:54,651 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:54,651 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:54,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 10:23:54,652 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:54,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1309424042, now seen corresponding path program 10 times [2022-07-12 10:23:54,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:54,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356101598] [2022-07-12 10:23:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:54,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356101598] [2022-07-12 10:23:54,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356101598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:54,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:54,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439736722] [2022-07-12 10:23:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:54,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:54,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:54,730 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:54,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 237 transitions, 1250 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:54,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:54,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:54,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:55,001 INFO L129 PetriNetUnfolder]: 117/851 cut-off events. [2022-07-12 10:23:55,001 INFO L130 PetriNetUnfolder]: For 2945/2953 co-relation queries the response was YES. [2022-07-12 10:23:55,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2545 conditions, 851 events. 117/851 cut-off events. For 2945/2953 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5654 event pairs, 42 based on Foata normal form. 1/810 useless extension candidates. Maximal degree in co-relation 2469. Up to 168 conditions per place. [2022-07-12 10:23:55,007 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 71 selfloop transitions, 24 changer transitions 27/278 dead transitions. [2022-07-12 10:23:55,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 278 transitions, 2046 flow [2022-07-12 10:23:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2922 transitions. [2022-07-12 10:23:55,019 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2022-07-12 10:23:55,019 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2922 transitions. [2022-07-12 10:23:55,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2922 transitions. [2022-07-12 10:23:55,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:55,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2922 transitions. [2022-07-12 10:23:55,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.88235294117646) internal successors, (2922), 17 states have internal predecessors, (2922), 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) [2022-07-12 10:23:55,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:55,026 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:55,026 INFO L186 Difference]: Start difference. First operand has 301 places, 237 transitions, 1250 flow. Second operand 17 states and 2922 transitions. [2022-07-12 10:23:55,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 278 transitions, 2046 flow [2022-07-12 10:23:55,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 278 transitions, 1889 flow, removed 56 selfloop flow, removed 13 redundant places. [2022-07-12 10:23:55,040 INFO L242 Difference]: Finished difference. Result has 302 places, 245 transitions, 1392 flow [2022-07-12 10:23:55,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1392, PETRI_PLACES=302, PETRI_TRANSITIONS=245} [2022-07-12 10:23:55,041 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-07-12 10:23:55,041 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 245 transitions, 1392 flow [2022-07-12 10:23:55,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:55,042 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:55,042 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:55,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 10:23:55,042 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash -326465042, now seen corresponding path program 11 times [2022-07-12 10:23:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:55,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808884710] [2022-07-12 10:23:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:55,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808884710] [2022-07-12 10:23:55,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808884710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:55,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:55,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968926193] [2022-07-12 10:23:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:55,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:55,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:55,116 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:55,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 245 transitions, 1392 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:55,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:55,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:55,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:55,377 INFO L129 PetriNetUnfolder]: 120/880 cut-off events. [2022-07-12 10:23:55,377 INFO L130 PetriNetUnfolder]: For 2857/2875 co-relation queries the response was YES. [2022-07-12 10:23:55,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 880 events. 120/880 cut-off events. For 2857/2875 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5952 event pairs, 42 based on Foata normal form. 3/841 useless extension candidates. Maximal degree in co-relation 2523. Up to 172 conditions per place. [2022-07-12 10:23:55,385 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 27 changer transitions 29/286 dead transitions. [2022-07-12 10:23:55,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 286 transitions, 2144 flow [2022-07-12 10:23:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2924 transitions. [2022-07-12 10:23:55,386 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-07-12 10:23:55,386 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2924 transitions. [2022-07-12 10:23:55,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2924 transitions. [2022-07-12 10:23:55,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:55,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2924 transitions. [2022-07-12 10:23:55,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.0) internal successors, (2924), 17 states have internal predecessors, (2924), 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) [2022-07-12 10:23:55,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:55,390 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:55,390 INFO L186 Difference]: Start difference. First operand has 302 places, 245 transitions, 1392 flow. Second operand 17 states and 2924 transitions. [2022-07-12 10:23:55,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 286 transitions, 2144 flow [2022-07-12 10:23:55,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 286 transitions, 2055 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:55,404 INFO L242 Difference]: Finished difference. Result has 311 places, 252 transitions, 1533 flow [2022-07-12 10:23:55,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1533, PETRI_PLACES=311, PETRI_TRANSITIONS=252} [2022-07-12 10:23:55,405 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 124 predicate places. [2022-07-12 10:23:55,405 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 252 transitions, 1533 flow [2022-07-12 10:23:55,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:55,405 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:55,405 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:55,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 10:23:55,406 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:55,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash -315781316, now seen corresponding path program 12 times [2022-07-12 10:23:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:55,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653377164] [2022-07-12 10:23:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:55,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:55,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:55,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653377164] [2022-07-12 10:23:55,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653377164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:55,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:55,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770208658] [2022-07-12 10:23:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:55,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:55,479 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:55,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 252 transitions, 1533 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:55,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:55,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:55,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:55,733 INFO L129 PetriNetUnfolder]: 108/845 cut-off events. [2022-07-12 10:23:55,733 INFO L130 PetriNetUnfolder]: For 2688/2706 co-relation queries the response was YES. [2022-07-12 10:23:55,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 845 events. 108/845 cut-off events. For 2688/2706 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5644 event pairs, 41 based on Foata normal form. 3/806 useless extension candidates. Maximal degree in co-relation 2353. Up to 165 conditions per place. [2022-07-12 10:23:55,740 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 16 changer transitions 34/276 dead transitions. [2022-07-12 10:23:55,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 276 transitions, 1995 flow [2022-07-12 10:23:55,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-07-12 10:23:55,742 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-07-12 10:23:55,742 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-07-12 10:23:55,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-07-12 10:23:55,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:55,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-07-12 10:23:55,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 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) [2022-07-12 10:23:55,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:55,746 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:55,746 INFO L186 Difference]: Start difference. First operand has 311 places, 252 transitions, 1533 flow. Second operand 18 states and 3087 transitions. [2022-07-12 10:23:55,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 276 transitions, 1995 flow [2022-07-12 10:23:55,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 276 transitions, 1899 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:55,760 INFO L242 Difference]: Finished difference. Result has 316 places, 238 transitions, 1273 flow [2022-07-12 10:23:55,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1273, PETRI_PLACES=316, PETRI_TRANSITIONS=238} [2022-07-12 10:23:55,760 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 129 predicate places. [2022-07-12 10:23:55,761 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 238 transitions, 1273 flow [2022-07-12 10:23:55,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:55,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:55,761 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:55,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-12 10:23:55,761 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:55,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:55,761 INFO L85 PathProgramCache]: Analyzing trace with hash -193117120, now seen corresponding path program 13 times [2022-07-12 10:23:55,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:55,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279288423] [2022-07-12 10:23:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:55,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:55,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:55,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279288423] [2022-07-12 10:23:55,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279288423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:55,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:55,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:55,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433592789] [2022-07-12 10:23:55,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:55,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:55,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:55,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:55,840 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:55,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 238 transitions, 1273 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:55,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:55,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:55,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:56,085 INFO L129 PetriNetUnfolder]: 94/751 cut-off events. [2022-07-12 10:23:56,085 INFO L130 PetriNetUnfolder]: For 2055/2063 co-relation queries the response was YES. [2022-07-12 10:23:56,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 751 events. 94/751 cut-off events. For 2055/2063 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4701 event pairs, 38 based on Foata normal form. 1/711 useless extension candidates. Maximal degree in co-relation 1960. Up to 152 conditions per place. [2022-07-12 10:23:56,090 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 60 selfloop transitions, 5 changer transitions 33/254 dead transitions. [2022-07-12 10:23:56,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 254 transitions, 1590 flow [2022-07-12 10:23:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:56,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3076 transitions. [2022-07-12 10:23:56,092 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8137566137566138 [2022-07-12 10:23:56,092 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3076 transitions. [2022-07-12 10:23:56,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3076 transitions. [2022-07-12 10:23:56,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:56,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3076 transitions. [2022-07-12 10:23:56,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.88888888888889) internal successors, (3076), 18 states have internal predecessors, (3076), 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) [2022-07-12 10:23:56,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:56,097 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:56,097 INFO L186 Difference]: Start difference. First operand has 316 places, 238 transitions, 1273 flow. Second operand 18 states and 3076 transitions. [2022-07-12 10:23:56,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 254 transitions, 1590 flow [2022-07-12 10:23:56,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 254 transitions, 1477 flow, removed 22 selfloop flow, removed 19 redundant places. [2022-07-12 10:23:56,108 INFO L242 Difference]: Finished difference. Result has 302 places, 218 transitions, 925 flow [2022-07-12 10:23:56,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=925, PETRI_PLACES=302, PETRI_TRANSITIONS=218} [2022-07-12 10:23:56,109 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-07-12 10:23:56,109 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 218 transitions, 925 flow [2022-07-12 10:23:56,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:56,109 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:56,109 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:56,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-12 10:23:56,109 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:56,110 INFO L85 PathProgramCache]: Analyzing trace with hash -973000416, now seen corresponding path program 14 times [2022-07-12 10:23:56,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:56,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25625228] [2022-07-12 10:23:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:56,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:56,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25625228] [2022-07-12 10:23:56,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25625228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:56,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:56,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:56,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079516390] [2022-07-12 10:23:56,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:56,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:56,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:56,193 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:56,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 218 transitions, 925 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:56,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:56,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:56,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:56,478 INFO L129 PetriNetUnfolder]: 96/780 cut-off events. [2022-07-12 10:23:56,478 INFO L130 PetriNetUnfolder]: For 1560/1565 co-relation queries the response was YES. [2022-07-12 10:23:56,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 780 events. 96/780 cut-off events. For 1560/1565 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5022 event pairs, 36 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 1950. Up to 129 conditions per place. [2022-07-12 10:23:56,484 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 23 changer transitions 34/267 dead transitions. [2022-07-12 10:23:56,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 267 transitions, 1668 flow [2022-07-12 10:23:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:23:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-12 10:23:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3764 transitions. [2022-07-12 10:23:56,486 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8147186147186147 [2022-07-12 10:23:56,486 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3764 transitions. [2022-07-12 10:23:56,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3764 transitions. [2022-07-12 10:23:56,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:56,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3764 transitions. [2022-07-12 10:23:56,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.0909090909091) internal successors, (3764), 22 states have internal predecessors, (3764), 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) [2022-07-12 10:23:56,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 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) [2022-07-12 10:23:56,491 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 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) [2022-07-12 10:23:56,491 INFO L186 Difference]: Start difference. First operand has 302 places, 218 transitions, 925 flow. Second operand 22 states and 3764 transitions. [2022-07-12 10:23:56,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 267 transitions, 1668 flow [2022-07-12 10:23:56,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 267 transitions, 1523 flow, removed 28 selfloop flow, removed 20 redundant places. [2022-07-12 10:23:56,500 INFO L242 Difference]: Finished difference. Result has 289 places, 223 transitions, 1001 flow [2022-07-12 10:23:56,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1001, PETRI_PLACES=289, PETRI_TRANSITIONS=223} [2022-07-12 10:23:56,501 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-07-12 10:23:56,501 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 223 transitions, 1001 flow [2022-07-12 10:23:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:56,501 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:56,501 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:56,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-12 10:23:56,501 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:56,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1643620878, now seen corresponding path program 15 times [2022-07-12 10:23:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:56,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888057018] [2022-07-12 10:23:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:56,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:56,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888057018] [2022-07-12 10:23:56,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888057018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:56,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:56,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:56,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947804621] [2022-07-12 10:23:56,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:56,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:56,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:56,573 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:56,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 223 transitions, 1001 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:56,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:56,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:56,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:56,814 INFO L129 PetriNetUnfolder]: 97/815 cut-off events. [2022-07-12 10:23:56,814 INFO L130 PetriNetUnfolder]: For 1909/1914 co-relation queries the response was YES. [2022-07-12 10:23:56,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 815 events. 97/815 cut-off events. For 1909/1914 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5384 event pairs, 34 based on Foata normal form. 3/782 useless extension candidates. Maximal degree in co-relation 2066. Up to 134 conditions per place. [2022-07-12 10:23:56,820 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 27 changer transitions 27/265 dead transitions. [2022-07-12 10:23:56,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 265 transitions, 1687 flow [2022-07-12 10:23:56,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-07-12 10:23:56,823 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-07-12 10:23:56,823 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-07-12 10:23:56,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-07-12 10:23:56,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:56,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-07-12 10:23:56,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 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) [2022-07-12 10:23:56,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:56,827 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:56,827 INFO L186 Difference]: Start difference. First operand has 289 places, 223 transitions, 1001 flow. Second operand 17 states and 2919 transitions. [2022-07-12 10:23:56,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 265 transitions, 1687 flow [2022-07-12 10:23:56,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 265 transitions, 1601 flow, removed 30 selfloop flow, removed 13 redundant places. [2022-07-12 10:23:56,835 INFO L242 Difference]: Finished difference. Result has 288 places, 231 transitions, 1167 flow [2022-07-12 10:23:56,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1167, PETRI_PLACES=288, PETRI_TRANSITIONS=231} [2022-07-12 10:23:56,836 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 101 predicate places. [2022-07-12 10:23:56,836 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 231 transitions, 1167 flow [2022-07-12 10:23:56,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:56,836 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:56,836 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:56,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-12 10:23:56,837 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 29335104, now seen corresponding path program 16 times [2022-07-12 10:23:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:56,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506518830] [2022-07-12 10:23:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:56,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:56,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506518830] [2022-07-12 10:23:56,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506518830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:56,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:56,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215963372] [2022-07-12 10:23:56,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:56,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:56,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:56,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:56,913 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:56,914 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 231 transitions, 1167 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:56,914 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:56,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:56,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:57,139 INFO L129 PetriNetUnfolder]: 87/761 cut-off events. [2022-07-12 10:23:57,139 INFO L130 PetriNetUnfolder]: For 1622/1627 co-relation queries the response was YES. [2022-07-12 10:23:57,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 761 events. 87/761 cut-off events. For 1622/1627 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4808 event pairs, 36 based on Foata normal form. 1/725 useless extension candidates. Maximal degree in co-relation 1898. Up to 130 conditions per place. [2022-07-12 10:23:57,144 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 52 selfloop transitions, 14 changer transitions 33/255 dead transitions. [2022-07-12 10:23:57,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 255 transitions, 1573 flow [2022-07-12 10:23:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:57,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-07-12 10:23:57,146 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-07-12 10:23:57,146 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-07-12 10:23:57,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-07-12 10:23:57,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:57,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-07-12 10:23:57,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 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) [2022-07-12 10:23:57,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:57,151 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:57,151 INFO L186 Difference]: Start difference. First operand has 288 places, 231 transitions, 1167 flow. Second operand 18 states and 3082 transitions. [2022-07-12 10:23:57,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 255 transitions, 1573 flow [2022-07-12 10:23:57,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 255 transitions, 1475 flow, removed 27 selfloop flow, removed 9 redundant places. [2022-07-12 10:23:57,159 INFO L242 Difference]: Finished difference. Result has 295 places, 216 transitions, 919 flow [2022-07-12 10:23:57,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=919, PETRI_PLACES=295, PETRI_TRANSITIONS=216} [2022-07-12 10:23:57,160 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-07-12 10:23:57,160 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 216 transitions, 919 flow [2022-07-12 10:23:57,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:57,160 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:57,160 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:57,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-12 10:23:57,161 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1411194016, now seen corresponding path program 17 times [2022-07-12 10:23:57,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:57,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386015787] [2022-07-12 10:23:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:57,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:57,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386015787] [2022-07-12 10:23:57,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386015787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:57,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:57,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:57,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205859091] [2022-07-12 10:23:57,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:57,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:57,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:57,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:57,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:57,248 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:57,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 216 transitions, 919 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:57,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:57,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:57,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:57,510 INFO L129 PetriNetUnfolder]: 87/740 cut-off events. [2022-07-12 10:23:57,510 INFO L130 PetriNetUnfolder]: For 1726/1729 co-relation queries the response was YES. [2022-07-12 10:23:57,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 740 events. 87/740 cut-off events. For 1726/1729 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4641 event pairs, 35 based on Foata normal form. 1/703 useless extension candidates. Maximal degree in co-relation 1843. Up to 121 conditions per place. [2022-07-12 10:23:57,515 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 48 selfloop transitions, 20 changer transitions 34/258 dead transitions. [2022-07-12 10:23:57,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 258 transitions, 1639 flow [2022-07-12 10:23:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:23:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-12 10:23:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3593 transitions. [2022-07-12 10:23:57,517 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8147392290249433 [2022-07-12 10:23:57,517 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3593 transitions. [2022-07-12 10:23:57,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3593 transitions. [2022-07-12 10:23:57,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:57,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3593 transitions. [2022-07-12 10:23:57,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.0952380952381) internal successors, (3593), 21 states have internal predecessors, (3593), 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) [2022-07-12 10:23:57,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 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) [2022-07-12 10:23:57,522 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 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) [2022-07-12 10:23:57,522 INFO L186 Difference]: Start difference. First operand has 295 places, 216 transitions, 919 flow. Second operand 21 states and 3593 transitions. [2022-07-12 10:23:57,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 258 transitions, 1639 flow [2022-07-12 10:23:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 258 transitions, 1468 flow, removed 39 selfloop flow, removed 18 redundant places. [2022-07-12 10:23:57,530 INFO L242 Difference]: Finished difference. Result has 287 places, 219 transitions, 979 flow [2022-07-12 10:23:57,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=979, PETRI_PLACES=287, PETRI_TRANSITIONS=219} [2022-07-12 10:23:57,530 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-07-12 10:23:57,530 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 219 transitions, 979 flow [2022-07-12 10:23:57,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:57,531 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:57,531 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-12 10:23:57,531 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:57,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash -256073726, now seen corresponding path program 18 times [2022-07-12 10:23:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:57,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784830689] [2022-07-12 10:23:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:57,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:57,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784830689] [2022-07-12 10:23:57,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784830689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:57,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:57,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:57,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705272503] [2022-07-12 10:23:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:57,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:57,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:57,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:57,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:57,603 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:57,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 219 transitions, 979 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:57,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:57,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:57,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:57,817 INFO L129 PetriNetUnfolder]: 81/721 cut-off events. [2022-07-12 10:23:57,817 INFO L130 PetriNetUnfolder]: For 1441/1444 co-relation queries the response was YES. [2022-07-12 10:23:57,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 721 events. 81/721 cut-off events. For 1441/1444 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4471 event pairs, 34 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 1727. Up to 126 conditions per place. [2022-07-12 10:23:57,822 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 12 changer transitions 32/245 dead transitions. [2022-07-12 10:23:57,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 245 transitions, 1382 flow [2022-07-12 10:23:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2022-07-12 10:23:57,824 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2022-07-12 10:23:57,824 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2022-07-12 10:23:57,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2022-07-12 10:23:57,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:57,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2022-07-12 10:23:57,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 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) [2022-07-12 10:23:57,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:57,829 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:57,829 INFO L186 Difference]: Start difference. First operand has 287 places, 219 transitions, 979 flow. Second operand 18 states and 3083 transitions. [2022-07-12 10:23:57,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 245 transitions, 1382 flow [2022-07-12 10:23:57,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 245 transitions, 1289 flow, removed 32 selfloop flow, removed 14 redundant places. [2022-07-12 10:23:57,836 INFO L242 Difference]: Finished difference. Result has 285 places, 211 transitions, 846 flow [2022-07-12 10:23:57,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=846, PETRI_PLACES=285, PETRI_TRANSITIONS=211} [2022-07-12 10:23:57,838 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 98 predicate places. [2022-07-12 10:23:57,838 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 211 transitions, 846 flow [2022-07-12 10:23:57,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:57,838 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:57,838 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:57,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-12 10:23:57,838 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash 461687660, now seen corresponding path program 19 times [2022-07-12 10:23:57,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:57,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116854263] [2022-07-12 10:23:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:57,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:57,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:57,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116854263] [2022-07-12 10:23:57,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116854263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:57,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:57,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:57,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678425576] [2022-07-12 10:23:57,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:57,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:57,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:57,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:57,924 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:57,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 211 transitions, 846 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:57,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:57,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:57,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:58,162 INFO L129 PetriNetUnfolder]: 76/703 cut-off events. [2022-07-12 10:23:58,162 INFO L130 PetriNetUnfolder]: For 1204/1207 co-relation queries the response was YES. [2022-07-12 10:23:58,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 703 events. 76/703 cut-off events. For 1204/1207 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4322 event pairs, 34 based on Foata normal form. 1/666 useless extension candidates. Maximal degree in co-relation 1623. Up to 126 conditions per place. [2022-07-12 10:23:58,167 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 40 selfloop transitions, 17 changer transitions 32/245 dead transitions. [2022-07-12 10:23:58,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 245 transitions, 1372 flow [2022-07-12 10:23:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:23:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-12 10:23:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2917 transitions. [2022-07-12 10:23:58,168 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170868347338935 [2022-07-12 10:23:58,168 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2917 transitions. [2022-07-12 10:23:58,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2917 transitions. [2022-07-12 10:23:58,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:58,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2917 transitions. [2022-07-12 10:23:58,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.58823529411765) internal successors, (2917), 17 states have internal predecessors, (2917), 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) [2022-07-12 10:23:58,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:58,173 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 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) [2022-07-12 10:23:58,173 INFO L186 Difference]: Start difference. First operand has 285 places, 211 transitions, 846 flow. Second operand 17 states and 2917 transitions. [2022-07-12 10:23:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 245 transitions, 1372 flow [2022-07-12 10:23:58,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 245 transitions, 1275 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-07-12 10:23:58,180 INFO L242 Difference]: Finished difference. Result has 277 places, 211 transitions, 858 flow [2022-07-12 10:23:58,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=858, PETRI_PLACES=277, PETRI_TRANSITIONS=211} [2022-07-12 10:23:58,180 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 90 predicate places. [2022-07-12 10:23:58,181 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 211 transitions, 858 flow [2022-07-12 10:23:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:58,181 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:58,181 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-12 10:23:58,181 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 206953098, now seen corresponding path program 20 times [2022-07-12 10:23:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:58,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424904903] [2022-07-12 10:23:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:58,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:58,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424904903] [2022-07-12 10:23:58,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424904903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:58,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:58,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:23:58,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411876207] [2022-07-12 10:23:58,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:58,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:23:58,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:58,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:23:58,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:23:58,252 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-07-12 10:23:58,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 211 transitions, 858 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:58,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:58,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-07-12 10:23:58,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:58,442 INFO L129 PetriNetUnfolder]: 63/592 cut-off events. [2022-07-12 10:23:58,443 INFO L130 PetriNetUnfolder]: For 765/768 co-relation queries the response was YES. [2022-07-12 10:23:58,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 592 events. 63/592 cut-off events. For 765/768 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3393 event pairs, 32 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 1258. Up to 103 conditions per place. [2022-07-12 10:23:58,446 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 29 selfloop transitions, 0 changer transitions 43/222 dead transitions. [2022-07-12 10:23:58,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 222 transitions, 1029 flow [2022-07-12 10:23:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:23:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-12 10:23:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3071 transitions. [2022-07-12 10:23:58,449 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8124338624338624 [2022-07-12 10:23:58,449 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3071 transitions. [2022-07-12 10:23:58,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3071 transitions. [2022-07-12 10:23:58,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:58,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3071 transitions. [2022-07-12 10:23:58,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 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) [2022-07-12 10:23:58,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:58,453 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 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) [2022-07-12 10:23:58,453 INFO L186 Difference]: Start difference. First operand has 277 places, 211 transitions, 858 flow. Second operand 18 states and 3071 transitions. [2022-07-12 10:23:58,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 222 transitions, 1029 flow [2022-07-12 10:23:58,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 222 transitions, 943 flow, removed 26 selfloop flow, removed 11 redundant places. [2022-07-12 10:23:58,459 INFO L242 Difference]: Finished difference. Result has 278 places, 179 transitions, 456 flow [2022-07-12 10:23:58,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=456, PETRI_PLACES=278, PETRI_TRANSITIONS=179} [2022-07-12 10:23:58,460 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-07-12 10:23:58,460 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 179 transitions, 456 flow [2022-07-12 10:23:58,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 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) [2022-07-12 10:23:58,460 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:58,460 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:58,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-12 10:23:58,460 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash 500637102, now seen corresponding path program 1 times [2022-07-12 10:23:58,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:58,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336650569] [2022-07-12 10:23:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:58,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336650569] [2022-07-12 10:23:58,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336650569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:58,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:58,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:23:58,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716963867] [2022-07-12 10:23:58,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:58,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:23:58,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:58,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:23:58,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:23:58,475 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-12 10:23:58,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 179 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:58,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:58,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-12 10:23:58,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:58,535 INFO L129 PetriNetUnfolder]: 59/781 cut-off events. [2022-07-12 10:23:58,535 INFO L130 PetriNetUnfolder]: For 391/400 co-relation queries the response was YES. [2022-07-12 10:23:58,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 781 events. 59/781 cut-off events. For 391/400 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5195 event pairs, 23 based on Foata normal form. 0/724 useless extension candidates. Maximal degree in co-relation 1220. Up to 33 conditions per place. [2022-07-12 10:23:58,540 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 13 selfloop transitions, 5 changer transitions 0/185 dead transitions. [2022-07-12 10:23:58,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 185 transitions, 507 flow [2022-07-12 10:23:58,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:23:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:23:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-12 10:23:58,541 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-12 10:23:58,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-12 10:23:58,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-12 10:23:58,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:58,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-12 10:23:58,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-07-12 10:23:58,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:58,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:58,542 INFO L186 Difference]: Start difference. First operand has 278 places, 179 transitions, 456 flow. Second operand 3 states and 591 transitions. [2022-07-12 10:23:58,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 185 transitions, 507 flow [2022-07-12 10:23:58,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 185 transitions, 481 flow, removed 13 selfloop flow, removed 10 redundant places. [2022-07-12 10:23:58,546 INFO L242 Difference]: Finished difference. Result has 224 places, 182 transitions, 468 flow [2022-07-12 10:23:58,546 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=224, PETRI_TRANSITIONS=182} [2022-07-12 10:23:58,546 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 37 predicate places. [2022-07-12 10:23:58,546 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 182 transitions, 468 flow [2022-07-12 10:23:58,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:58,547 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:58,547 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:58,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-12 10:23:58,547 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1964400122, now seen corresponding path program 1 times [2022-07-12 10:23:58,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:58,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99723688] [2022-07-12 10:23:58,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:58,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:58,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99723688] [2022-07-12 10:23:58,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99723688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:58,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:58,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:23:58,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078139741] [2022-07-12 10:23:58,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:23:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:58,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:23:58,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:23:58,648 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:23:58,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 182 transitions, 468 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:23:58,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:58,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:23:58,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:59,556 INFO L129 PetriNetUnfolder]: 459/1741 cut-off events. [2022-07-12 10:23:59,556 INFO L130 PetriNetUnfolder]: For 1002/1002 co-relation queries the response was YES. [2022-07-12 10:23:59,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 1741 events. 459/1741 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12849 event pairs, 191 based on Foata normal form. 1/1650 useless extension candidates. Maximal degree in co-relation 3565. Up to 625 conditions per place. [2022-07-12 10:23:59,566 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 158 selfloop transitions, 10 changer transitions 98/406 dead transitions. [2022-07-12 10:23:59,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 406 transitions, 1768 flow [2022-07-12 10:23:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-12 10:23:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-12 10:23:59,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9254 transitions. [2022-07-12 10:23:59,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7597701149425288 [2022-07-12 10:23:59,572 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9254 transitions. [2022-07-12 10:23:59,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9254 transitions. [2022-07-12 10:23:59,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:59,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9254 transitions. [2022-07-12 10:23:59,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.55172413793105) internal successors, (9254), 58 states have internal predecessors, (9254), 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) [2022-07-12 10:23:59,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 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) [2022-07-12 10:23:59,586 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 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) [2022-07-12 10:23:59,586 INFO L186 Difference]: Start difference. First operand has 224 places, 182 transitions, 468 flow. Second operand 58 states and 9254 transitions. [2022-07-12 10:23:59,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 406 transitions, 1768 flow [2022-07-12 10:23:59,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 406 transitions, 1758 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:23:59,591 INFO L242 Difference]: Finished difference. Result has 335 places, 191 transitions, 716 flow [2022-07-12 10:23:59,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=716, PETRI_PLACES=335, PETRI_TRANSITIONS=191} [2022-07-12 10:23:59,592 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 148 predicate places. [2022-07-12 10:23:59,592 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 191 transitions, 716 flow [2022-07-12 10:23:59,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:23:59,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:59,593 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:59,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-12 10:23:59,593 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:59,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1966886732, now seen corresponding path program 2 times [2022-07-12 10:23:59,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:59,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381861919] [2022-07-12 10:23:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:59,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:59,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:59,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381861919] [2022-07-12 10:23:59,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381861919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:59,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:59,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:23:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008447722] [2022-07-12 10:23:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:59,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:23:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:59,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:23:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:23:59,607 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-12 10:23:59,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 191 transitions, 716 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:59,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:59,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-12 10:23:59,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:23:59,715 INFO L129 PetriNetUnfolder]: 114/979 cut-off events. [2022-07-12 10:23:59,715 INFO L130 PetriNetUnfolder]: For 8058/8089 co-relation queries the response was YES. [2022-07-12 10:23:59,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3444 conditions, 979 events. 114/979 cut-off events. For 8058/8089 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6074 event pairs, 89 based on Foata normal form. 9/932 useless extension candidates. Maximal degree in co-relation 3338. Up to 56 conditions per place. [2022-07-12 10:23:59,725 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 18 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2022-07-12 10:23:59,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 197 transitions, 779 flow [2022-07-12 10:23:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:23:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:23:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-12 10:23:59,726 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-12 10:23:59,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-12 10:23:59,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-12 10:23:59,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:23:59,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-12 10:23:59,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-07-12 10:23:59,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:59,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:23:59,727 INFO L186 Difference]: Start difference. First operand has 335 places, 191 transitions, 716 flow. Second operand 3 states and 591 transitions. [2022-07-12 10:23:59,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 197 transitions, 779 flow [2022-07-12 10:23:59,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 197 transitions, 732 flow, removed 23 selfloop flow, removed 20 redundant places. [2022-07-12 10:23:59,740 INFO L242 Difference]: Finished difference. Result has 272 places, 194 transitions, 705 flow [2022-07-12 10:23:59,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=705, PETRI_PLACES=272, PETRI_TRANSITIONS=194} [2022-07-12 10:23:59,741 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 85 predicate places. [2022-07-12 10:23:59,741 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 194 transitions, 705 flow [2022-07-12 10:23:59,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:23:59,741 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:23:59,741 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:23:59,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-12 10:23:59,741 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:23:59,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:23:59,742 INFO L85 PathProgramCache]: Analyzing trace with hash -724357054, now seen corresponding path program 1 times [2022-07-12 10:23:59,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:23:59,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089718649] [2022-07-12 10:23:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:23:59,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:23:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:23:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:23:59,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:23:59,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089718649] [2022-07-12 10:23:59,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089718649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:23:59,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:23:59,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:23:59,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544532324] [2022-07-12 10:23:59,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:23:59,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:23:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:23:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:23:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:23:59,836 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:23:59,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 194 transitions, 705 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:23:59,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:23:59,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:23:59,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:00,587 INFO L129 PetriNetUnfolder]: 542/2054 cut-off events. [2022-07-12 10:24:00,587 INFO L130 PetriNetUnfolder]: For 13418/13445 co-relation queries the response was YES. [2022-07-12 10:24:00,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8126 conditions, 2054 events. 542/2054 cut-off events. For 13418/13445 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 15362 event pairs, 182 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 8038. Up to 443 conditions per place. [2022-07-12 10:24:00,606 INFO L132 encePairwiseOnDemand]: 187/210 looper letters, 125 selfloop transitions, 49 changer transitions 98/415 dead transitions. [2022-07-12 10:24:00,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 415 transitions, 2872 flow [2022-07-12 10:24:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-12 10:24:00,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-12 10:24:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5513 transitions. [2022-07-12 10:24:00,609 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7721288515406163 [2022-07-12 10:24:00,609 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5513 transitions. [2022-07-12 10:24:00,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5513 transitions. [2022-07-12 10:24:00,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:00,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5513 transitions. [2022-07-12 10:24:00,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 162.14705882352942) internal successors, (5513), 34 states have internal predecessors, (5513), 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) [2022-07-12 10:24:00,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 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) [2022-07-12 10:24:00,616 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 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) [2022-07-12 10:24:00,617 INFO L186 Difference]: Start difference. First operand has 272 places, 194 transitions, 705 flow. Second operand 34 states and 5513 transitions. [2022-07-12 10:24:00,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 415 transitions, 2872 flow [2022-07-12 10:24:00,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 415 transitions, 2863 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-07-12 10:24:00,640 INFO L242 Difference]: Finished difference. Result has 333 places, 237 transitions, 1389 flow [2022-07-12 10:24:00,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1389, PETRI_PLACES=333, PETRI_TRANSITIONS=237} [2022-07-12 10:24:00,641 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 146 predicate places. [2022-07-12 10:24:00,641 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 237 transitions, 1389 flow [2022-07-12 10:24:00,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:00,641 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:00,641 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:00,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-12 10:24:00,642 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash 845494072, now seen corresponding path program 1 times [2022-07-12 10:24:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:00,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536025578] [2022-07-12 10:24:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:00,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:00,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536025578] [2022-07-12 10:24:00,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536025578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:00,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:00,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:00,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58497420] [2022-07-12 10:24:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:00,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:00,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:00,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:00,656 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-12 10:24:00,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 237 transitions, 1389 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:24:00,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:00,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-12 10:24:00,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:00,879 INFO L129 PetriNetUnfolder]: 265/1750 cut-off events. [2022-07-12 10:24:00,880 INFO L130 PetriNetUnfolder]: For 24591/24775 co-relation queries the response was YES. [2022-07-12 10:24:00,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 1750 events. 265/1750 cut-off events. For 24591/24775 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13259 event pairs, 207 based on Foata normal form. 52/1732 useless extension candidates. Maximal degree in co-relation 8625. Up to 210 conditions per place. [2022-07-12 10:24:00,898 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 14 selfloop transitions, 3 changer transitions 2/243 dead transitions. [2022-07-12 10:24:00,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 243 transitions, 1440 flow [2022-07-12 10:24:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-12 10:24:00,899 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-12 10:24:00,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-12 10:24:00,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-12 10:24:00,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:00,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-12 10:24:00,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-07-12 10:24:00,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:24:00,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:24:00,900 INFO L186 Difference]: Start difference. First operand has 333 places, 237 transitions, 1389 flow. Second operand 3 states and 591 transitions. [2022-07-12 10:24:00,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 243 transitions, 1440 flow [2022-07-12 10:24:00,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 243 transitions, 1180 flow, removed 129 selfloop flow, removed 13 redundant places. [2022-07-12 10:24:00,945 INFO L242 Difference]: Finished difference. Result has 306 places, 238 transitions, 1148 flow [2022-07-12 10:24:00,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1148, PETRI_PLACES=306, PETRI_TRANSITIONS=238} [2022-07-12 10:24:00,945 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 119 predicate places. [2022-07-12 10:24:00,945 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 238 transitions, 1148 flow [2022-07-12 10:24:00,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:24:00,945 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:00,945 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:00,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-12 10:24:00,946 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:00,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:00,946 INFO L85 PathProgramCache]: Analyzing trace with hash 51948910, now seen corresponding path program 2 times [2022-07-12 10:24:00,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:00,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787467641] [2022-07-12 10:24:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:00,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:01,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:01,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787467641] [2022-07-12 10:24:01,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787467641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:01,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:01,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609158434] [2022-07-12 10:24:01,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:01,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:01,043 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:01,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 238 transitions, 1148 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:01,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:01,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:01,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:01,865 INFO L129 PetriNetUnfolder]: 683/2638 cut-off events. [2022-07-12 10:24:01,865 INFO L130 PetriNetUnfolder]: For 25050/25076 co-relation queries the response was YES. [2022-07-12 10:24:01,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12883 conditions, 2638 events. 683/2638 cut-off events. For 25050/25076 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 20528 event pairs, 393 based on Foata normal form. 2/2550 useless extension candidates. Maximal degree in co-relation 12777. Up to 1198 conditions per place. [2022-07-12 10:24:01,893 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 177 selfloop transitions, 26 changer transitions 49/396 dead transitions. [2022-07-12 10:24:01,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 396 transitions, 3300 flow [2022-07-12 10:24:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:24:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:24:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4191 transitions. [2022-07-12 10:24:01,896 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7675824175824176 [2022-07-12 10:24:01,896 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4191 transitions. [2022-07-12 10:24:01,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4191 transitions. [2022-07-12 10:24:01,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:01,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4191 transitions. [2022-07-12 10:24:01,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.19230769230768) internal successors, (4191), 26 states have internal predecessors, (4191), 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) [2022-07-12 10:24:01,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 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) [2022-07-12 10:24:01,901 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 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) [2022-07-12 10:24:01,902 INFO L186 Difference]: Start difference. First operand has 306 places, 238 transitions, 1148 flow. Second operand 26 states and 4191 transitions. [2022-07-12 10:24:01,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 396 transitions, 3300 flow [2022-07-12 10:24:01,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 396 transitions, 3297 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:24:01,953 INFO L242 Difference]: Finished difference. Result has 353 places, 261 transitions, 1636 flow [2022-07-12 10:24:01,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1636, PETRI_PLACES=353, PETRI_TRANSITIONS=261} [2022-07-12 10:24:01,954 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 166 predicate places. [2022-07-12 10:24:01,954 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 261 transitions, 1636 flow [2022-07-12 10:24:01,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:01,954 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:01,954 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:01,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-12 10:24:01,954 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:01,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2029902456, now seen corresponding path program 1 times [2022-07-12 10:24:01,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:01,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834263405] [2022-07-12 10:24:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:01,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:01,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:01,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834263405] [2022-07-12 10:24:01,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834263405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:01,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:01,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:24:01,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886360920] [2022-07-12 10:24:01,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:01,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:24:01,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:01,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:24:01,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:24:01,971 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-07-12 10:24:01,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 261 transitions, 1636 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:24:01,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:01,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-07-12 10:24:01,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:02,149 INFO L129 PetriNetUnfolder]: 135/1212 cut-off events. [2022-07-12 10:24:02,150 INFO L130 PetriNetUnfolder]: For 12986/13036 co-relation queries the response was YES. [2022-07-12 10:24:02,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 1212 events. 135/1212 cut-off events. For 12986/13036 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8353 event pairs, 112 based on Foata normal form. 24/1199 useless extension candidates. Maximal degree in co-relation 5323. Up to 119 conditions per place. [2022-07-12 10:24:02,162 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 15 selfloop transitions, 5 changer transitions 10/239 dead transitions. [2022-07-12 10:24:02,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 239 transitions, 1471 flow [2022-07-12 10:24:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:24:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:24:02,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-07-12 10:24:02,163 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-07-12 10:24:02,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-07-12 10:24:02,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-07-12 10:24:02,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:02,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-07-12 10:24:02,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2022-07-12 10:24:02,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:24:02,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 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) [2022-07-12 10:24:02,164 INFO L186 Difference]: Start difference. First operand has 353 places, 261 transitions, 1636 flow. Second operand 3 states and 591 transitions. [2022-07-12 10:24:02,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 239 transitions, 1471 flow [2022-07-12 10:24:02,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 239 transitions, 1164 flow, removed 139 selfloop flow, removed 18 redundant places. [2022-07-12 10:24:02,208 INFO L242 Difference]: Finished difference. Result has 322 places, 226 transitions, 1090 flow [2022-07-12 10:24:02,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1090, PETRI_PLACES=322, PETRI_TRANSITIONS=226} [2022-07-12 10:24:02,208 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 135 predicate places. [2022-07-12 10:24:02,208 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 226 transitions, 1090 flow [2022-07-12 10:24:02,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2022-07-12 10:24:02,208 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:02,208 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:02,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-12 10:24:02,209 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1875410008, now seen corresponding path program 3 times [2022-07-12 10:24:02,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318780082] [2022-07-12 10:24:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:02,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:02,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318780082] [2022-07-12 10:24:02,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318780082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:02,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:02,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:02,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414595173] [2022-07-12 10:24:02,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:02,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:02,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:02,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:02,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:02,327 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:02,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 226 transitions, 1090 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:02,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:02,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:02,328 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:03,020 INFO L129 PetriNetUnfolder]: 375/1672 cut-off events. [2022-07-12 10:24:03,021 INFO L130 PetriNetUnfolder]: For 13839/13868 co-relation queries the response was YES. [2022-07-12 10:24:03,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7453 conditions, 1672 events. 375/1672 cut-off events. For 13839/13868 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11701 event pairs, 197 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 7339. Up to 580 conditions per place. [2022-07-12 10:24:03,040 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 128 selfloop transitions, 30 changer transitions 49/352 dead transitions. [2022-07-12 10:24:03,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 352 transitions, 2663 flow [2022-07-12 10:24:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 10:24:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 10:24:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4351 transitions. [2022-07-12 10:24:03,047 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7673721340388007 [2022-07-12 10:24:03,047 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4351 transitions. [2022-07-12 10:24:03,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4351 transitions. [2022-07-12 10:24:03,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:03,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4351 transitions. [2022-07-12 10:24:03,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.14814814814815) internal successors, (4351), 27 states have internal predecessors, (4351), 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) [2022-07-12 10:24:03,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 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) [2022-07-12 10:24:03,052 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 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) [2022-07-12 10:24:03,053 INFO L186 Difference]: Start difference. First operand has 322 places, 226 transitions, 1090 flow. Second operand 27 states and 4351 transitions. [2022-07-12 10:24:03,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 352 transitions, 2663 flow [2022-07-12 10:24:03,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 352 transitions, 2631 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-07-12 10:24:03,093 INFO L242 Difference]: Finished difference. Result has 357 places, 248 transitions, 1445 flow [2022-07-12 10:24:03,093 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1445, PETRI_PLACES=357, PETRI_TRANSITIONS=248} [2022-07-12 10:24:03,093 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 170 predicate places. [2022-07-12 10:24:03,093 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 248 transitions, 1445 flow [2022-07-12 10:24:03,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:03,094 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:03,094 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:03,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-12 10:24:03,094 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:03,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash -147000172, now seen corresponding path program 1 times [2022-07-12 10:24:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:03,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706111952] [2022-07-12 10:24:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:03,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706111952] [2022-07-12 10:24:03,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706111952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:03,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:03,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256023691] [2022-07-12 10:24:03,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:03,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:03,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:03,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:03,205 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:03,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 248 transitions, 1445 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:03,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:03,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:03,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:04,151 INFO L129 PetriNetUnfolder]: 526/2048 cut-off events. [2022-07-12 10:24:04,152 INFO L130 PetriNetUnfolder]: For 26454/26510 co-relation queries the response was YES. [2022-07-12 10:24:04,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10889 conditions, 2048 events. 526/2048 cut-off events. For 26454/26510 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 14752 event pairs, 245 based on Foata normal form. 1/1996 useless extension candidates. Maximal degree in co-relation 10758. Up to 753 conditions per place. [2022-07-12 10:24:04,178 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 171 selfloop transitions, 25 changer transitions 70/417 dead transitions. [2022-07-12 10:24:04,178 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 417 transitions, 4670 flow [2022-07-12 10:24:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:24:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-12 10:24:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7023 transitions. [2022-07-12 10:24:04,181 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600649350649351 [2022-07-12 10:24:04,181 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7023 transitions. [2022-07-12 10:24:04,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7023 transitions. [2022-07-12 10:24:04,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:04,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7023 transitions. [2022-07-12 10:24:04,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.61363636363637) internal successors, (7023), 44 states have internal predecessors, (7023), 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) [2022-07-12 10:24:04,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 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) [2022-07-12 10:24:04,190 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 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) [2022-07-12 10:24:04,190 INFO L186 Difference]: Start difference. First operand has 357 places, 248 transitions, 1445 flow. Second operand 44 states and 7023 transitions. [2022-07-12 10:24:04,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 417 transitions, 4670 flow [2022-07-12 10:24:04,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 417 transitions, 4539 flow, removed 59 selfloop flow, removed 12 redundant places. [2022-07-12 10:24:04,256 INFO L242 Difference]: Finished difference. Result has 413 places, 274 transitions, 1914 flow [2022-07-12 10:24:04,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1914, PETRI_PLACES=413, PETRI_TRANSITIONS=274} [2022-07-12 10:24:04,256 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 226 predicate places. [2022-07-12 10:24:04,256 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 274 transitions, 1914 flow [2022-07-12 10:24:04,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:04,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:04,257 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:04,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-12 10:24:04,257 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:04,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1251028272, now seen corresponding path program 4 times [2022-07-12 10:24:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:04,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545394437] [2022-07-12 10:24:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:04,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:04,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:04,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545394437] [2022-07-12 10:24:04,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545394437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:04,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:04,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:04,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880992129] [2022-07-12 10:24:04,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:04,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:04,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:04,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:04,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:04,370 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:04,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 274 transitions, 1914 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:04,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:04,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:04,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:05,430 INFO L129 PetriNetUnfolder]: 579/2226 cut-off events. [2022-07-12 10:24:05,430 INFO L130 PetriNetUnfolder]: For 43896/43931 co-relation queries the response was YES. [2022-07-12 10:24:05,456 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13344 conditions, 2226 events. 579/2226 cut-off events. For 43896/43931 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16466 event pairs, 278 based on Foata normal form. 10/2180 useless extension candidates. Maximal degree in co-relation 13185. Up to 817 conditions per place. [2022-07-12 10:24:05,463 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 183 selfloop transitions, 35 changer transitions 74/441 dead transitions. [2022-07-12 10:24:05,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 441 transitions, 4416 flow [2022-07-12 10:24:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:24:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-12 10:24:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-07-12 10:24:05,466 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-07-12 10:24:05,466 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-07-12 10:24:05,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-07-12 10:24:05,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:05,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-07-12 10:24:05,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 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) [2022-07-12 10:24:05,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 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) [2022-07-12 10:24:05,475 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 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) [2022-07-12 10:24:05,475 INFO L186 Difference]: Start difference. First operand has 413 places, 274 transitions, 1914 flow. Second operand 44 states and 7025 transitions. [2022-07-12 10:24:05,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 441 transitions, 4416 flow [2022-07-12 10:24:05,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 441 transitions, 4016 flow, removed 200 selfloop flow, removed 29 redundant places. [2022-07-12 10:24:05,635 INFO L242 Difference]: Finished difference. Result has 432 places, 297 transitions, 2073 flow [2022-07-12 10:24:05,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2073, PETRI_PLACES=432, PETRI_TRANSITIONS=297} [2022-07-12 10:24:05,636 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 245 predicate places. [2022-07-12 10:24:05,636 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 297 transitions, 2073 flow [2022-07-12 10:24:05,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:05,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:05,636 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:05,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-12 10:24:05,636 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash -792355658, now seen corresponding path program 5 times [2022-07-12 10:24:05,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:05,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853795127] [2022-07-12 10:24:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:05,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:05,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:05,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853795127] [2022-07-12 10:24:05,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853795127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:05,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:05,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227649912] [2022-07-12 10:24:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:05,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:05,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:05,790 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:05,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 297 transitions, 2073 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:05,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:05,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:05,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:07,116 INFO L129 PetriNetUnfolder]: 652/2469 cut-off events. [2022-07-12 10:24:07,117 INFO L130 PetriNetUnfolder]: For 42227/42269 co-relation queries the response was YES. [2022-07-12 10:24:07,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14893 conditions, 2469 events. 652/2469 cut-off events. For 42227/42269 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18857 event pairs, 345 based on Foata normal form. 11/2421 useless extension candidates. Maximal degree in co-relation 14726. Up to 789 conditions per place. [2022-07-12 10:24:07,198 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 215 selfloop transitions, 43 changer transitions 89/496 dead transitions. [2022-07-12 10:24:07,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 496 transitions, 5865 flow [2022-07-12 10:24:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-12 10:24:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-07-12 10:24:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7972 transitions. [2022-07-12 10:24:07,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7592380952380953 [2022-07-12 10:24:07,204 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7972 transitions. [2022-07-12 10:24:07,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7972 transitions. [2022-07-12 10:24:07,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:07,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7972 transitions. [2022-07-12 10:24:07,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.44) internal successors, (7972), 50 states have internal predecessors, (7972), 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) [2022-07-12 10:24:07,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 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) [2022-07-12 10:24:07,217 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 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) [2022-07-12 10:24:07,217 INFO L186 Difference]: Start difference. First operand has 432 places, 297 transitions, 2073 flow. Second operand 50 states and 7972 transitions. [2022-07-12 10:24:07,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 496 transitions, 5865 flow [2022-07-12 10:24:07,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 496 transitions, 5217 flow, removed 324 selfloop flow, removed 22 redundant places. [2022-07-12 10:24:07,336 INFO L242 Difference]: Finished difference. Result has 475 places, 316 transitions, 2514 flow [2022-07-12 10:24:07,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2514, PETRI_PLACES=475, PETRI_TRANSITIONS=316} [2022-07-12 10:24:07,337 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 288 predicate places. [2022-07-12 10:24:07,337 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 316 transitions, 2514 flow [2022-07-12 10:24:07,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:07,338 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:07,338 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:07,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-12 10:24:07,338 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:07,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash 642885540, now seen corresponding path program 6 times [2022-07-12 10:24:07,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:07,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521919784] [2022-07-12 10:24:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:07,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:07,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521919784] [2022-07-12 10:24:07,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521919784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:07,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:07,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:07,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49891533] [2022-07-12 10:24:07,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:07,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:07,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:07,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:07,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:07,462 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:07,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 316 transitions, 2514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:07,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:07,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:07,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:08,900 INFO L129 PetriNetUnfolder]: 650/2419 cut-off events. [2022-07-12 10:24:08,900 INFO L130 PetriNetUnfolder]: For 50402/50447 co-relation queries the response was YES. [2022-07-12 10:24:08,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15883 conditions, 2419 events. 650/2419 cut-off events. For 50402/50447 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 18510 event pairs, 245 based on Foata normal form. 10/2373 useless extension candidates. Maximal degree in co-relation 15690. Up to 735 conditions per place. [2022-07-12 10:24:08,939 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 299 selfloop transitions, 52 changer transitions 109/609 dead transitions. [2022-07-12 10:24:08,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 609 transitions, 8262 flow [2022-07-12 10:24:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-12 10:24:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-07-12 10:24:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9230 transitions. [2022-07-12 10:24:08,943 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7577996715927751 [2022-07-12 10:24:08,943 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9230 transitions. [2022-07-12 10:24:08,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9230 transitions. [2022-07-12 10:24:08,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:08,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9230 transitions. [2022-07-12 10:24:08,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.13793103448276) internal successors, (9230), 58 states have internal predecessors, (9230), 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) [2022-07-12 10:24:08,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 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) [2022-07-12 10:24:08,996 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 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) [2022-07-12 10:24:08,997 INFO L186 Difference]: Start difference. First operand has 475 places, 316 transitions, 2514 flow. Second operand 58 states and 9230 transitions. [2022-07-12 10:24:08,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 609 transitions, 8262 flow [2022-07-12 10:24:09,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 609 transitions, 7490 flow, removed 375 selfloop flow, removed 29 redundant places. [2022-07-12 10:24:09,143 INFO L242 Difference]: Finished difference. Result has 514 places, 318 transitions, 2706 flow [2022-07-12 10:24:09,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=2706, PETRI_PLACES=514, PETRI_TRANSITIONS=318} [2022-07-12 10:24:09,144 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 327 predicate places. [2022-07-12 10:24:09,144 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 318 transitions, 2706 flow [2022-07-12 10:24:09,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:09,144 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:09,144 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:09,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-12 10:24:09,145 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:09,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:09,145 INFO L85 PathProgramCache]: Analyzing trace with hash 365761050, now seen corresponding path program 7 times [2022-07-12 10:24:09,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:09,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901830040] [2022-07-12 10:24:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:09,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:09,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901830040] [2022-07-12 10:24:09,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901830040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:09,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:09,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373311236] [2022-07-12 10:24:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:09,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:09,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:09,279 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:09,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 318 transitions, 2706 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:09,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:09,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:09,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:10,776 INFO L129 PetriNetUnfolder]: 694/2549 cut-off events. [2022-07-12 10:24:10,776 INFO L130 PetriNetUnfolder]: For 49590/49645 co-relation queries the response was YES. [2022-07-12 10:24:10,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17002 conditions, 2549 events. 694/2549 cut-off events. For 49590/49645 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19901 event pairs, 274 based on Foata normal form. 25/2512 useless extension candidates. Maximal degree in co-relation 16788. Up to 869 conditions per place. [2022-07-12 10:24:10,826 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 220 selfloop transitions, 56 changer transitions 88/513 dead transitions. [2022-07-12 10:24:10,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 513 transitions, 6934 flow [2022-07-12 10:24:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-12 10:24:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-07-12 10:24:10,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8594 transitions. [2022-07-12 10:24:10,831 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7578483245149912 [2022-07-12 10:24:10,832 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8594 transitions. [2022-07-12 10:24:10,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8594 transitions. [2022-07-12 10:24:10,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:10,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8594 transitions. [2022-07-12 10:24:10,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.14814814814815) internal successors, (8594), 54 states have internal predecessors, (8594), 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) [2022-07-12 10:24:10,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 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) [2022-07-12 10:24:10,845 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 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) [2022-07-12 10:24:10,845 INFO L186 Difference]: Start difference. First operand has 514 places, 318 transitions, 2706 flow. Second operand 54 states and 8594 transitions. [2022-07-12 10:24:10,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 513 transitions, 6934 flow [2022-07-12 10:24:11,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 513 transitions, 6539 flow, removed 74 selfloop flow, removed 47 redundant places. [2022-07-12 10:24:11,016 INFO L242 Difference]: Finished difference. Result has 515 places, 334 transitions, 3042 flow [2022-07-12 10:24:11,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2552, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3042, PETRI_PLACES=515, PETRI_TRANSITIONS=334} [2022-07-12 10:24:11,016 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 328 predicate places. [2022-07-12 10:24:11,017 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 334 transitions, 3042 flow [2022-07-12 10:24:11,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:11,017 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:11,017 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:11,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-12 10:24:11,017 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:11,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1704453830, now seen corresponding path program 8 times [2022-07-12 10:24:11,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:11,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887901407] [2022-07-12 10:24:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:11,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:11,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:11,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887901407] [2022-07-12 10:24:11,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887901407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:11,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:11,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:11,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124355389] [2022-07-12 10:24:11,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:11,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:11,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:11,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 334 transitions, 3042 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:11,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:11,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:11,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:12,500 INFO L129 PetriNetUnfolder]: 705/2592 cut-off events. [2022-07-12 10:24:12,500 INFO L130 PetriNetUnfolder]: For 64910/64966 co-relation queries the response was YES. [2022-07-12 10:24:12,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18701 conditions, 2592 events. 705/2592 cut-off events. For 64910/64966 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 20318 event pairs, 383 based on Foata normal form. 15/2539 useless extension candidates. Maximal degree in co-relation 18488. Up to 899 conditions per place. [2022-07-12 10:24:12,549 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 236 selfloop transitions, 42 changer transitions 89/516 dead transitions. [2022-07-12 10:24:12,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 516 transitions, 7988 flow [2022-07-12 10:24:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-12 10:24:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-07-12 10:24:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8133 transitions. [2022-07-12 10:24:12,555 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7593837535014005 [2022-07-12 10:24:12,555 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8133 transitions. [2022-07-12 10:24:12,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8133 transitions. [2022-07-12 10:24:12,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:12,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8133 transitions. [2022-07-12 10:24:12,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.47058823529412) internal successors, (8133), 51 states have internal predecessors, (8133), 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) [2022-07-12 10:24:12,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 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) [2022-07-12 10:24:12,666 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 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) [2022-07-12 10:24:12,666 INFO L186 Difference]: Start difference. First operand has 515 places, 334 transitions, 3042 flow. Second operand 51 states and 8133 transitions. [2022-07-12 10:24:12,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 516 transitions, 7988 flow [2022-07-12 10:24:12,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 516 transitions, 7078 flow, removed 444 selfloop flow, removed 36 redundant places. [2022-07-12 10:24:12,834 INFO L242 Difference]: Finished difference. Result has 533 places, 354 transitions, 3586 flow [2022-07-12 10:24:12,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2932, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3586, PETRI_PLACES=533, PETRI_TRANSITIONS=354} [2022-07-12 10:24:12,835 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 346 predicate places. [2022-07-12 10:24:12,835 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 354 transitions, 3586 flow [2022-07-12 10:24:12,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:12,836 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:12,836 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:12,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-12 10:24:12,836 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash 191725786, now seen corresponding path program 9 times [2022-07-12 10:24:12,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:12,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534297498] [2022-07-12 10:24:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:12,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534297498] [2022-07-12 10:24:12,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534297498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:12,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:12,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870091041] [2022-07-12 10:24:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:12,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:12,939 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:12,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 354 transitions, 3586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:12,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:12,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:12,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:14,298 INFO L129 PetriNetUnfolder]: 692/2586 cut-off events. [2022-07-12 10:24:14,298 INFO L130 PetriNetUnfolder]: For 69167/69230 co-relation queries the response was YES. [2022-07-12 10:24:14,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18900 conditions, 2586 events. 692/2586 cut-off events. For 69167/69230 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20421 event pairs, 300 based on Foata normal form. 25/2537 useless extension candidates. Maximal degree in co-relation 18676. Up to 927 conditions per place. [2022-07-12 10:24:14,348 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 67 changer transitions 79/545 dead transitions. [2022-07-12 10:24:14,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 545 transitions, 8540 flow [2022-07-12 10:24:14,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-12 10:24:14,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-07-12 10:24:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-07-12 10:24:14,352 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-07-12 10:24:14,352 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-07-12 10:24:14,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-07-12 10:24:14,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:14,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-07-12 10:24:14,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 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) [2022-07-12 10:24:14,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 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) [2022-07-12 10:24:14,364 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 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) [2022-07-12 10:24:14,364 INFO L186 Difference]: Start difference. First operand has 533 places, 354 transitions, 3586 flow. Second operand 42 states and 6702 transitions. [2022-07-12 10:24:14,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 545 transitions, 8540 flow [2022-07-12 10:24:14,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 545 transitions, 7732 flow, removed 404 selfloop flow, removed 36 redundant places. [2022-07-12 10:24:14,690 INFO L242 Difference]: Finished difference. Result has 532 places, 376 transitions, 4069 flow [2022-07-12 10:24:14,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=4069, PETRI_PLACES=532, PETRI_TRANSITIONS=376} [2022-07-12 10:24:14,691 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 345 predicate places. [2022-07-12 10:24:14,691 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 376 transitions, 4069 flow [2022-07-12 10:24:14,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:14,691 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:14,691 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:14,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-12 10:24:14,692 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1112861422, now seen corresponding path program 10 times [2022-07-12 10:24:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:14,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832751473] [2022-07-12 10:24:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:14,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:14,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:14,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832751473] [2022-07-12 10:24:14,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832751473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:14,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:14,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:14,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974934478] [2022-07-12 10:24:14,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:14,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:14,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:14,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:14,810 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:14,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 376 transitions, 4069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:14,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:14,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:14,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:16,171 INFO L129 PetriNetUnfolder]: 690/2600 cut-off events. [2022-07-12 10:24:16,171 INFO L130 PetriNetUnfolder]: For 61328/61384 co-relation queries the response was YES. [2022-07-12 10:24:16,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18540 conditions, 2600 events. 690/2600 cut-off events. For 61328/61384 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 20641 event pairs, 324 based on Foata normal form. 11/2537 useless extension candidates. Maximal degree in co-relation 18318. Up to 924 conditions per place. [2022-07-12 10:24:16,220 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 301 selfloop transitions, 80 changer transitions 93/623 dead transitions. [2022-07-12 10:24:16,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 623 transitions, 10587 flow [2022-07-12 10:24:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-12 10:24:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-07-12 10:24:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7963 transitions. [2022-07-12 10:24:16,223 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7583809523809524 [2022-07-12 10:24:16,223 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7963 transitions. [2022-07-12 10:24:16,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7963 transitions. [2022-07-12 10:24:16,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:16,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7963 transitions. [2022-07-12 10:24:16,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.26) internal successors, (7963), 50 states have internal predecessors, (7963), 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) [2022-07-12 10:24:16,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 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) [2022-07-12 10:24:16,234 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 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) [2022-07-12 10:24:16,235 INFO L186 Difference]: Start difference. First operand has 532 places, 376 transitions, 4069 flow. Second operand 50 states and 7963 transitions. [2022-07-12 10:24:16,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 623 transitions, 10587 flow [2022-07-12 10:24:16,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 623 transitions, 9889 flow, removed 261 selfloop flow, removed 24 redundant places. [2022-07-12 10:24:16,587 INFO L242 Difference]: Finished difference. Result has 573 places, 409 transitions, 4993 flow [2022-07-12 10:24:16,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3806, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4993, PETRI_PLACES=573, PETRI_TRANSITIONS=409} [2022-07-12 10:24:16,588 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 386 predicate places. [2022-07-12 10:24:16,588 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 409 transitions, 4993 flow [2022-07-12 10:24:16,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:16,589 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:16,589 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:16,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-12 10:24:16,589 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:16,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1951022846, now seen corresponding path program 11 times [2022-07-12 10:24:16,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:16,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038187250] [2022-07-12 10:24:16,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:16,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:16,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:16,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038187250] [2022-07-12 10:24:16,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038187250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:16,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:16,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:16,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112496812] [2022-07-12 10:24:16,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:16,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:16,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:16,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:16,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:16,736 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:16,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 409 transitions, 4993 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:16,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:16,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:16,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:18,170 INFO L129 PetriNetUnfolder]: 684/2615 cut-off events. [2022-07-12 10:24:18,170 INFO L130 PetriNetUnfolder]: For 67731/67805 co-relation queries the response was YES. [2022-07-12 10:24:18,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19035 conditions, 2615 events. 684/2615 cut-off events. For 67731/67805 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 20883 event pairs, 276 based on Foata normal form. 36/2586 useless extension candidates. Maximal degree in co-relation 18789. Up to 900 conditions per place. [2022-07-12 10:24:18,225 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 107 changer transitions 82/606 dead transitions. [2022-07-12 10:24:18,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 606 transitions, 10351 flow [2022-07-12 10:24:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-12 10:24:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-12 10:24:18,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7332 transitions. [2022-07-12 10:24:18,229 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7590062111801242 [2022-07-12 10:24:18,229 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7332 transitions. [2022-07-12 10:24:18,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7332 transitions. [2022-07-12 10:24:18,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:18,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7332 transitions. [2022-07-12 10:24:18,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.3913043478261) internal successors, (7332), 46 states have internal predecessors, (7332), 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) [2022-07-12 10:24:18,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:24:18,241 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:24:18,241 INFO L186 Difference]: Start difference. First operand has 573 places, 409 transitions, 4993 flow. Second operand 46 states and 7332 transitions. [2022-07-12 10:24:18,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 606 transitions, 10351 flow [2022-07-12 10:24:18,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 606 transitions, 9296 flow, removed 483 selfloop flow, removed 36 redundant places. [2022-07-12 10:24:18,541 INFO L242 Difference]: Finished difference. Result has 576 places, 419 transitions, 4951 flow [2022-07-12 10:24:18,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4429, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4951, PETRI_PLACES=576, PETRI_TRANSITIONS=419} [2022-07-12 10:24:18,542 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 389 predicate places. [2022-07-12 10:24:18,542 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 419 transitions, 4951 flow [2022-07-12 10:24:18,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:18,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:18,543 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:18,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-12 10:24:18,543 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1823463120, now seen corresponding path program 12 times [2022-07-12 10:24:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:18,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479539673] [2022-07-12 10:24:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:18,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:18,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479539673] [2022-07-12 10:24:18,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479539673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:18,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:18,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034035639] [2022-07-12 10:24:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:18,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:18,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:18,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 419 transitions, 4951 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:18,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:18,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:18,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:20,431 INFO L129 PetriNetUnfolder]: 744/2777 cut-off events. [2022-07-12 10:24:20,431 INFO L130 PetriNetUnfolder]: For 68872/68940 co-relation queries the response was YES. [2022-07-12 10:24:20,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20420 conditions, 2777 events. 744/2777 cut-off events. For 68872/68940 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 22437 event pairs, 346 based on Foata normal form. 23/2735 useless extension candidates. Maximal degree in co-relation 20176. Up to 900 conditions per place. [2022-07-12 10:24:20,480 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 262 selfloop transitions, 109 changer transitions 92/612 dead transitions. [2022-07-12 10:24:20,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 612 transitions, 10117 flow [2022-07-12 10:24:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-12 10:24:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-07-12 10:24:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-07-12 10:24:20,483 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-07-12 10:24:20,483 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-07-12 10:24:20,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-07-12 10:24:20,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:20,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-07-12 10:24:20,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 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) [2022-07-12 10:24:20,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 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) [2022-07-12 10:24:20,494 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 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) [2022-07-12 10:24:20,494 INFO L186 Difference]: Start difference. First operand has 576 places, 419 transitions, 4951 flow. Second operand 52 states and 8287 transitions. [2022-07-12 10:24:20,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 612 transitions, 10117 flow [2022-07-12 10:24:20,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 612 transitions, 9568 flow, removed 240 selfloop flow, removed 38 redundant places. [2022-07-12 10:24:20,768 INFO L242 Difference]: Finished difference. Result has 601 places, 446 transitions, 5737 flow [2022-07-12 10:24:20,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4782, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5737, PETRI_PLACES=601, PETRI_TRANSITIONS=446} [2022-07-12 10:24:20,769 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 414 predicate places. [2022-07-12 10:24:20,769 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 446 transitions, 5737 flow [2022-07-12 10:24:20,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:20,770 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:20,770 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:20,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-12 10:24:20,770 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash -340446058, now seen corresponding path program 13 times [2022-07-12 10:24:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:20,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377356396] [2022-07-12 10:24:20,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:20,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:20,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377356396] [2022-07-12 10:24:20,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377356396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:20,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:20,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:20,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696019659] [2022-07-12 10:24:20,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:20,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:20,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:20,958 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:20,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 446 transitions, 5737 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:20,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:20,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:20,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:22,145 INFO L129 PetriNetUnfolder]: 735/2727 cut-off events. [2022-07-12 10:24:22,145 INFO L130 PetriNetUnfolder]: For 71828/71908 co-relation queries the response was YES. [2022-07-12 10:24:22,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20498 conditions, 2727 events. 735/2727 cut-off events. For 71828/71908 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21926 event pairs, 292 based on Foata normal form. 40/2693 useless extension candidates. Maximal degree in co-relation 20246. Up to 948 conditions per place. [2022-07-12 10:24:22,203 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 135 changer transitions 60/605 dead transitions. [2022-07-12 10:24:22,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 605 transitions, 10141 flow [2022-07-12 10:24:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:24:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:24:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-07-12 10:24:22,206 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-07-12 10:24:22,206 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-07-12 10:24:22,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-07-12 10:24:22,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:22,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-07-12 10:24:22,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 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) [2022-07-12 10:24:22,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:22,213 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:22,213 INFO L186 Difference]: Start difference. First operand has 601 places, 446 transitions, 5737 flow. Second operand 30 states and 4809 transitions. [2022-07-12 10:24:22,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 605 transitions, 10141 flow [2022-07-12 10:24:22,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 605 transitions, 9609 flow, removed 231 selfloop flow, removed 42 redundant places. [2022-07-12 10:24:22,579 INFO L242 Difference]: Finished difference. Result has 562 places, 464 transitions, 6269 flow [2022-07-12 10:24:22,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5511, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6269, PETRI_PLACES=562, PETRI_TRANSITIONS=464} [2022-07-12 10:24:22,580 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 375 predicate places. [2022-07-12 10:24:22,580 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 464 transitions, 6269 flow [2022-07-12 10:24:22,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:22,580 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:22,581 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:22,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-12 10:24:22,581 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash 193940962, now seen corresponding path program 14 times [2022-07-12 10:24:22,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:22,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781543348] [2022-07-12 10:24:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:22,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:22,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:22,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781543348] [2022-07-12 10:24:22,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781543348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:22,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:22,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:22,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920004754] [2022-07-12 10:24:22,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:22,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:22,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:22,707 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:22,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 464 transitions, 6269 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:22,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:22,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:22,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:24,345 INFO L129 PetriNetUnfolder]: 744/2779 cut-off events. [2022-07-12 10:24:24,345 INFO L130 PetriNetUnfolder]: For 67967/68049 co-relation queries the response was YES. [2022-07-12 10:24:24,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20492 conditions, 2779 events. 744/2779 cut-off events. For 67967/68049 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 22459 event pairs, 301 based on Foata normal form. 36/2747 useless extension candidates. Maximal degree in co-relation 20266. Up to 920 conditions per place. [2022-07-12 10:24:24,396 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 302 selfloop transitions, 115 changer transitions 95/661 dead transitions. [2022-07-12 10:24:24,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 661 transitions, 11694 flow [2022-07-12 10:24:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-12 10:24:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-07-12 10:24:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8441 transitions. [2022-07-12 10:24:24,400 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7584007187780772 [2022-07-12 10:24:24,400 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8441 transitions. [2022-07-12 10:24:24,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8441 transitions. [2022-07-12 10:24:24,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:24,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8441 transitions. [2022-07-12 10:24:24,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.26415094339623) internal successors, (8441), 53 states have internal predecessors, (8441), 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) [2022-07-12 10:24:24,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 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) [2022-07-12 10:24:24,412 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 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) [2022-07-12 10:24:24,412 INFO L186 Difference]: Start difference. First operand has 562 places, 464 transitions, 6269 flow. Second operand 53 states and 8441 transitions. [2022-07-12 10:24:24,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 661 transitions, 11694 flow [2022-07-12 10:24:24,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 661 transitions, 11371 flow, removed 127 selfloop flow, removed 11 redundant places. [2022-07-12 10:24:24,720 INFO L242 Difference]: Finished difference. Result has 631 places, 470 transitions, 6643 flow [2022-07-12 10:24:24,721 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6643, PETRI_PLACES=631, PETRI_TRANSITIONS=470} [2022-07-12 10:24:24,721 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 444 predicate places. [2022-07-12 10:24:24,722 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 470 transitions, 6643 flow [2022-07-12 10:24:24,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:24,722 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:24,722 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:24,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-12 10:24:24,722 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:24,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:24,723 INFO L85 PathProgramCache]: Analyzing trace with hash -758267650, now seen corresponding path program 15 times [2022-07-12 10:24:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:24,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463994577] [2022-07-12 10:24:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:24,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:24,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463994577] [2022-07-12 10:24:24,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463994577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:24,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:24,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:24,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093336160] [2022-07-12 10:24:24,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:24,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:24,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:24,828 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:24,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 470 transitions, 6643 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:24,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:24,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:24,829 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:26,247 INFO L129 PetriNetUnfolder]: 721/2664 cut-off events. [2022-07-12 10:24:26,247 INFO L130 PetriNetUnfolder]: For 71988/72064 co-relation queries the response was YES. [2022-07-12 10:24:26,292 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20459 conditions, 2664 events. 721/2664 cut-off events. For 71988/72064 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21176 event pairs, 308 based on Foata normal form. 29/2619 useless extension candidates. Maximal degree in co-relation 20199. Up to 942 conditions per place. [2022-07-12 10:24:26,303 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 138 changer transitions 72/631 dead transitions. [2022-07-12 10:24:26,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 631 transitions, 11628 flow [2022-07-12 10:24:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-12 10:24:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-12 10:24:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5441 transitions. [2022-07-12 10:24:26,306 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7620448179271708 [2022-07-12 10:24:26,306 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5441 transitions. [2022-07-12 10:24:26,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5441 transitions. [2022-07-12 10:24:26,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:26,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5441 transitions. [2022-07-12 10:24:26,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.02941176470588) internal successors, (5441), 34 states have internal predecessors, (5441), 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) [2022-07-12 10:24:26,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 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) [2022-07-12 10:24:26,315 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 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) [2022-07-12 10:24:26,315 INFO L186 Difference]: Start difference. First operand has 631 places, 470 transitions, 6643 flow. Second operand 34 states and 5441 transitions. [2022-07-12 10:24:26,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 631 transitions, 11628 flow [2022-07-12 10:24:26,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 631 transitions, 10726 flow, removed 351 selfloop flow, removed 42 redundant places. [2022-07-12 10:24:26,657 INFO L242 Difference]: Finished difference. Result has 606 places, 490 transitions, 7277 flow [2022-07-12 10:24:26,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6288, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=7277, PETRI_PLACES=606, PETRI_TRANSITIONS=490} [2022-07-12 10:24:26,658 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 419 predicate places. [2022-07-12 10:24:26,658 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 490 transitions, 7277 flow [2022-07-12 10:24:26,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:26,658 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:26,658 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:26,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-07-12 10:24:26,659 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1804519258, now seen corresponding path program 16 times [2022-07-12 10:24:26,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:26,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574933022] [2022-07-12 10:24:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:26,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:26,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:26,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574933022] [2022-07-12 10:24:26,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574933022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:26,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:26,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947618436] [2022-07-12 10:24:26,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:26,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:26,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:26,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:26,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:26,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:26,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 490 transitions, 7277 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:26,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:26,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:26,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:28,101 INFO L129 PetriNetUnfolder]: 706/2657 cut-off events. [2022-07-12 10:24:28,101 INFO L130 PetriNetUnfolder]: For 66377/66468 co-relation queries the response was YES. [2022-07-12 10:24:28,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19945 conditions, 2657 events. 706/2657 cut-off events. For 66377/66468 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21237 event pairs, 282 based on Foata normal form. 46/2632 useless extension candidates. Maximal degree in co-relation 19701. Up to 924 conditions per place. [2022-07-12 10:24:28,164 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 136 changer transitions 74/642 dead transitions. [2022-07-12 10:24:28,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 642 transitions, 11487 flow [2022-07-12 10:24:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:24:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:24:28,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6065 transitions. [2022-07-12 10:24:28,168 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7600250626566416 [2022-07-12 10:24:28,168 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6065 transitions. [2022-07-12 10:24:28,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6065 transitions. [2022-07-12 10:24:28,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:28,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6065 transitions. [2022-07-12 10:24:28,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.60526315789474) internal successors, (6065), 38 states have internal predecessors, (6065), 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) [2022-07-12 10:24:28,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:24:28,177 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:24:28,177 INFO L186 Difference]: Start difference. First operand has 606 places, 490 transitions, 7277 flow. Second operand 38 states and 6065 transitions. [2022-07-12 10:24:28,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 642 transitions, 11487 flow [2022-07-12 10:24:28,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 642 transitions, 10744 flow, removed 221 selfloop flow, removed 21 redundant places. [2022-07-12 10:24:28,591 INFO L242 Difference]: Finished difference. Result has 625 places, 485 transitions, 6981 flow [2022-07-12 10:24:28,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6717, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6981, PETRI_PLACES=625, PETRI_TRANSITIONS=485} [2022-07-12 10:24:28,592 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-07-12 10:24:28,592 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 485 transitions, 6981 flow [2022-07-12 10:24:28,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:28,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:28,592 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:28,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-12 10:24:28,592 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:28,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:28,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1194672816, now seen corresponding path program 17 times [2022-07-12 10:24:28,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:28,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842337061] [2022-07-12 10:24:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:28,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842337061] [2022-07-12 10:24:28,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842337061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:28,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:28,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429882513] [2022-07-12 10:24:28,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:28,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:28,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:28,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:28,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:28,698 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:28,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 485 transitions, 6981 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:28,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:28,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:28,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:29,883 INFO L129 PetriNetUnfolder]: 670/2518 cut-off events. [2022-07-12 10:24:29,883 INFO L130 PetriNetUnfolder]: For 62137/62228 co-relation queries the response was YES. [2022-07-12 10:24:29,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18844 conditions, 2518 events. 670/2518 cut-off events. For 62137/62228 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 19732 event pairs, 283 based on Foata normal form. 46/2493 useless extension candidates. Maximal degree in co-relation 18593. Up to 914 conditions per place. [2022-07-12 10:24:29,930 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 105 changer transitions 67/584 dead transitions. [2022-07-12 10:24:29,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 584 transitions, 9863 flow [2022-07-12 10:24:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:24:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-12 10:24:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4167 transitions. [2022-07-12 10:24:29,932 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7631868131868131 [2022-07-12 10:24:29,932 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4167 transitions. [2022-07-12 10:24:29,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4167 transitions. [2022-07-12 10:24:29,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:29,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4167 transitions. [2022-07-12 10:24:29,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.26923076923077) internal successors, (4167), 26 states have internal predecessors, (4167), 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) [2022-07-12 10:24:29,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 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) [2022-07-12 10:24:29,937 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 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) [2022-07-12 10:24:29,937 INFO L186 Difference]: Start difference. First operand has 625 places, 485 transitions, 6981 flow. Second operand 26 states and 4167 transitions. [2022-07-12 10:24:29,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 584 transitions, 9863 flow [2022-07-12 10:24:30,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 584 transitions, 9579 flow, removed 95 selfloop flow, removed 27 redundant places. [2022-07-12 10:24:30,256 INFO L242 Difference]: Finished difference. Result has 604 places, 437 transitions, 5956 flow [2022-07-12 10:24:30,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6795, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5956, PETRI_PLACES=604, PETRI_TRANSITIONS=437} [2022-07-12 10:24:30,257 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-07-12 10:24:30,257 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 437 transitions, 5956 flow [2022-07-12 10:24:30,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:30,257 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:30,257 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:30,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-12 10:24:30,258 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:30,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash 867598196, now seen corresponding path program 18 times [2022-07-12 10:24:30,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:30,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206955748] [2022-07-12 10:24:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:30,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:30,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:30,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206955748] [2022-07-12 10:24:30,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206955748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:30,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:30,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:30,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364171817] [2022-07-12 10:24:30,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:30,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:30,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:30,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:30,371 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:30,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 437 transitions, 5956 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:30,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:30,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:30,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:31,897 INFO L129 PetriNetUnfolder]: 717/2685 cut-off events. [2022-07-12 10:24:31,897 INFO L130 PetriNetUnfolder]: For 65581/65649 co-relation queries the response was YES. [2022-07-12 10:24:31,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20118 conditions, 2685 events. 717/2685 cut-off events. For 65581/65649 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21455 event pairs, 308 based on Foata normal form. 27/2645 useless extension candidates. Maximal degree in co-relation 19885. Up to 916 conditions per place. [2022-07-12 10:24:31,960 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 121 changer transitions 83/623 dead transitions. [2022-07-12 10:24:31,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 623 transitions, 10918 flow [2022-07-12 10:24:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-12 10:24:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-12 10:24:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7179 transitions. [2022-07-12 10:24:31,964 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7596825396825397 [2022-07-12 10:24:31,964 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7179 transitions. [2022-07-12 10:24:31,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7179 transitions. [2022-07-12 10:24:31,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:31,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7179 transitions. [2022-07-12 10:24:31,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.53333333333333) internal successors, (7179), 45 states have internal predecessors, (7179), 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) [2022-07-12 10:24:31,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 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) [2022-07-12 10:24:31,975 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 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) [2022-07-12 10:24:31,975 INFO L186 Difference]: Start difference. First operand has 604 places, 437 transitions, 5956 flow. Second operand 45 states and 7179 transitions. [2022-07-12 10:24:31,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 623 transitions, 10918 flow [2022-07-12 10:24:32,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 623 transitions, 9804 flow, removed 78 selfloop flow, removed 31 redundant places. [2022-07-12 10:24:32,304 INFO L242 Difference]: Finished difference. Result has 604 places, 462 transitions, 6079 flow [2022-07-12 10:24:32,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6079, PETRI_PLACES=604, PETRI_TRANSITIONS=462} [2022-07-12 10:24:32,305 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-07-12 10:24:32,306 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 462 transitions, 6079 flow [2022-07-12 10:24:32,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:32,306 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:32,306 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:32,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-12 10:24:32,307 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash -439035162, now seen corresponding path program 19 times [2022-07-12 10:24:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:32,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050836857] [2022-07-12 10:24:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:32,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050836857] [2022-07-12 10:24:32,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050836857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:32,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:32,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:32,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147684168] [2022-07-12 10:24:32,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:32,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:32,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:32,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:32,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:32,434 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:32,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 462 transitions, 6079 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:32,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:32,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:32,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:33,873 INFO L129 PetriNetUnfolder]: 711/2663 cut-off events. [2022-07-12 10:24:33,873 INFO L130 PetriNetUnfolder]: For 62676/62744 co-relation queries the response was YES. [2022-07-12 10:24:33,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19593 conditions, 2663 events. 711/2663 cut-off events. For 62676/62744 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21272 event pairs, 301 based on Foata normal form. 27/2622 useless extension candidates. Maximal degree in co-relation 19344. Up to 912 conditions per place. [2022-07-12 10:24:33,934 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 119 changer transitions 85/631 dead transitions. [2022-07-12 10:24:33,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 631 transitions, 10776 flow [2022-07-12 10:24:33,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-12 10:24:33,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-12 10:24:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7339 transitions. [2022-07-12 10:24:33,937 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7597308488612836 [2022-07-12 10:24:33,937 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7339 transitions. [2022-07-12 10:24:33,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7339 transitions. [2022-07-12 10:24:33,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:33,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7339 transitions. [2022-07-12 10:24:33,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.54347826086956) internal successors, (7339), 46 states have internal predecessors, (7339), 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) [2022-07-12 10:24:33,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:24:33,947 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:24:33,947 INFO L186 Difference]: Start difference. First operand has 604 places, 462 transitions, 6079 flow. Second operand 46 states and 7339 transitions. [2022-07-12 10:24:33,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 631 transitions, 10776 flow [2022-07-12 10:24:34,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 631 transitions, 10330 flow, removed 180 selfloop flow, removed 30 redundant places. [2022-07-12 10:24:34,283 INFO L242 Difference]: Finished difference. Result has 620 places, 466 transitions, 6385 flow [2022-07-12 10:24:34,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5927, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6385, PETRI_PLACES=620, PETRI_TRANSITIONS=466} [2022-07-12 10:24:34,284 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 433 predicate places. [2022-07-12 10:24:34,284 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 466 transitions, 6385 flow [2022-07-12 10:24:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:34,284 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:34,285 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:34,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-12 10:24:34,285 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:34,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash -737920398, now seen corresponding path program 20 times [2022-07-12 10:24:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:34,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402650481] [2022-07-12 10:24:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:34,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:34,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402650481] [2022-07-12 10:24:34,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402650481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:34,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:34,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125521933] [2022-07-12 10:24:34,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:34,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:34,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:34,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:34,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:34,401 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:34,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 466 transitions, 6385 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:34,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:34,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:34,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:35,686 INFO L129 PetriNetUnfolder]: 729/2707 cut-off events. [2022-07-12 10:24:35,686 INFO L130 PetriNetUnfolder]: For 65708/65776 co-relation queries the response was YES. [2022-07-12 10:24:35,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20308 conditions, 2707 events. 729/2707 cut-off events. For 65708/65776 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21620 event pairs, 313 based on Foata normal form. 27/2661 useless extension candidates. Maximal degree in co-relation 20053. Up to 932 conditions per place. [2022-07-12 10:24:35,749 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 134 changer transitions 73/626 dead transitions. [2022-07-12 10:24:35,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 626 transitions, 10868 flow [2022-07-12 10:24:35,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:24:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:24:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-07-12 10:24:35,751 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-07-12 10:24:35,752 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-07-12 10:24:35,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-07-12 10:24:35,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:35,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-07-12 10:24:35,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 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) [2022-07-12 10:24:35,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:24:35,759 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:24:35,759 INFO L186 Difference]: Start difference. First operand has 620 places, 466 transitions, 6385 flow. Second operand 37 states and 5917 transitions. [2022-07-12 10:24:35,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 626 transitions, 10868 flow [2022-07-12 10:24:36,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 626 transitions, 10475 flow, removed 138 selfloop flow, removed 30 redundant places. [2022-07-12 10:24:36,102 INFO L242 Difference]: Finished difference. Result has 617 places, 485 transitions, 7007 flow [2022-07-12 10:24:36,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6204, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7007, PETRI_PLACES=617, PETRI_TRANSITIONS=485} [2022-07-12 10:24:36,102 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 430 predicate places. [2022-07-12 10:24:36,103 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 485 transitions, 7007 flow [2022-07-12 10:24:36,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:36,103 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:36,103 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:36,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-12 10:24:36,103 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash -843381400, now seen corresponding path program 21 times [2022-07-12 10:24:36,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:36,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556238641] [2022-07-12 10:24:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:36,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:36,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:36,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556238641] [2022-07-12 10:24:36,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556238641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:36,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:36,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686336082] [2022-07-12 10:24:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:36,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:36,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:36,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:36,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 485 transitions, 7007 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:36,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:36,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:36,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:37,492 INFO L129 PetriNetUnfolder]: 722/2701 cut-off events. [2022-07-12 10:24:37,492 INFO L130 PetriNetUnfolder]: For 66760/66830 co-relation queries the response was YES. [2022-07-12 10:24:37,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20368 conditions, 2701 events. 722/2701 cut-off events. For 66760/66830 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21602 event pairs, 308 based on Foata normal form. 29/2661 useless extension candidates. Maximal degree in co-relation 20117. Up to 928 conditions per place. [2022-07-12 10:24:37,553 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 277 selfloop transitions, 133 changer transitions 72/631 dead transitions. [2022-07-12 10:24:37,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 631 transitions, 11266 flow [2022-07-12 10:24:37,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:24:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:24:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-07-12 10:24:37,555 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-07-12 10:24:37,555 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-07-12 10:24:37,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-07-12 10:24:37,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:37,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-07-12 10:24:37,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 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) [2022-07-12 10:24:37,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:24:37,563 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:24:37,563 INFO L186 Difference]: Start difference. First operand has 617 places, 485 transitions, 7007 flow. Second operand 38 states and 6077 transitions. [2022-07-12 10:24:37,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 631 transitions, 11266 flow [2022-07-12 10:24:37,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 631 transitions, 10916 flow, removed 119 selfloop flow, removed 21 redundant places. [2022-07-12 10:24:37,912 INFO L242 Difference]: Finished difference. Result has 633 places, 491 transitions, 7360 flow [2022-07-12 10:24:37,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6836, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7360, PETRI_PLACES=633, PETRI_TRANSITIONS=491} [2022-07-12 10:24:37,913 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 446 predicate places. [2022-07-12 10:24:37,913 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 491 transitions, 7360 flow [2022-07-12 10:24:37,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:37,913 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:37,913 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:37,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-07-12 10:24:37,914 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:37,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:37,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1580929322, now seen corresponding path program 22 times [2022-07-12 10:24:37,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:37,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272270949] [2022-07-12 10:24:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:37,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:38,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:38,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272270949] [2022-07-12 10:24:38,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272270949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:38,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:38,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:38,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821174001] [2022-07-12 10:24:38,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:38,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:38,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:38,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:38,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:38,038 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:38,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 491 transitions, 7360 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:38,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:38,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:38,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:39,411 INFO L129 PetriNetUnfolder]: 718/2702 cut-off events. [2022-07-12 10:24:39,411 INFO L130 PetriNetUnfolder]: For 67678/67745 co-relation queries the response was YES. [2022-07-12 10:24:39,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20487 conditions, 2702 events. 718/2702 cut-off events. For 67678/67745 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21602 event pairs, 301 based on Foata normal form. 27/2662 useless extension candidates. Maximal degree in co-relation 20230. Up to 924 conditions per place. [2022-07-12 10:24:39,475 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 129 changer transitions 74/636 dead transitions. [2022-07-12 10:24:39,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 636 transitions, 11623 flow [2022-07-12 10:24:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:24:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:24:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-07-12 10:24:39,478 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-07-12 10:24:39,478 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-07-12 10:24:39,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-07-12 10:24:39,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:39,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-07-12 10:24:39,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 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) [2022-07-12 10:24:39,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:24:39,486 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:24:39,486 INFO L186 Difference]: Start difference. First operand has 633 places, 491 transitions, 7360 flow. Second operand 38 states and 6077 transitions. [2022-07-12 10:24:39,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 636 transitions, 11623 flow [2022-07-12 10:24:39,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 636 transitions, 11299 flow, removed 113 selfloop flow, removed 20 redundant places. [2022-07-12 10:24:39,880 INFO L242 Difference]: Finished difference. Result has 649 places, 496 transitions, 7657 flow [2022-07-12 10:24:39,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7657, PETRI_PLACES=649, PETRI_TRANSITIONS=496} [2022-07-12 10:24:39,881 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 462 predicate places. [2022-07-12 10:24:39,881 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 496 transitions, 7657 flow [2022-07-12 10:24:39,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:39,881 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:39,881 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:39,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-07-12 10:24:39,882 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash 89261698, now seen corresponding path program 23 times [2022-07-12 10:24:39,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:39,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130677788] [2022-07-12 10:24:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:39,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:40,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:40,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130677788] [2022-07-12 10:24:40,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130677788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:40,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:40,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:40,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863531702] [2022-07-12 10:24:40,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:40,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:40,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:40,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:40,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:40,004 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:40,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 496 transitions, 7657 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:40,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:40,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:40,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:41,363 INFO L129 PetriNetUnfolder]: 704/2650 cut-off events. [2022-07-12 10:24:41,363 INFO L130 PetriNetUnfolder]: For 68189/68258 co-relation queries the response was YES. [2022-07-12 10:24:41,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20265 conditions, 2650 events. 704/2650 cut-off events. For 68189/68258 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21077 event pairs, 305 based on Foata normal form. 29/2608 useless extension candidates. Maximal degree in co-relation 20002. Up to 928 conditions per place. [2022-07-12 10:24:41,434 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 130 changer transitions 62/619 dead transitions. [2022-07-12 10:24:41,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 619 transitions, 11341 flow [2022-07-12 10:24:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:24:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:24:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-07-12 10:24:41,438 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-07-12 10:24:41,438 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-07-12 10:24:41,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-07-12 10:24:41,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:41,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-07-12 10:24:41,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 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) [2022-07-12 10:24:41,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:41,445 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:41,445 INFO L186 Difference]: Start difference. First operand has 649 places, 496 transitions, 7657 flow. Second operand 30 states and 4815 transitions. [2022-07-12 10:24:41,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 619 transitions, 11341 flow [2022-07-12 10:24:41,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 619 transitions, 11025 flow, removed 109 selfloop flow, removed 21 redundant places. [2022-07-12 10:24:41,835 INFO L242 Difference]: Finished difference. Result has 648 places, 501 transitions, 7910 flow [2022-07-12 10:24:41,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7451, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7910, PETRI_PLACES=648, PETRI_TRANSITIONS=501} [2022-07-12 10:24:41,836 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 461 predicate places. [2022-07-12 10:24:41,836 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 501 transitions, 7910 flow [2022-07-12 10:24:41,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:41,837 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:41,837 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:41,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-07-12 10:24:41,837 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:41,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:41,837 INFO L85 PathProgramCache]: Analyzing trace with hash 296426346, now seen corresponding path program 24 times [2022-07-12 10:24:41,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:41,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481732723] [2022-07-12 10:24:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:41,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:41,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:41,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481732723] [2022-07-12 10:24:41,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481732723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:41,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:41,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:41,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944069292] [2022-07-12 10:24:41,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:41,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:41,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:41,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:41,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:41,960 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:41,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 501 transitions, 7910 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:41,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:41,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:41,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:43,150 INFO L129 PetriNetUnfolder]: 712/2675 cut-off events. [2022-07-12 10:24:43,150 INFO L130 PetriNetUnfolder]: For 69909/69992 co-relation queries the response was YES. [2022-07-12 10:24:43,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20611 conditions, 2675 events. 712/2675 cut-off events. For 69909/69992 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21364 event pairs, 304 based on Foata normal form. 35/2641 useless extension candidates. Maximal degree in co-relation 20351. Up to 934 conditions per place. [2022-07-12 10:24:43,214 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 144 changer transitions 63/632 dead transitions. [2022-07-12 10:24:43,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 632 transitions, 11882 flow [2022-07-12 10:24:43,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:24:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:24:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-07-12 10:24:43,217 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-12 10:24:43,217 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-07-12 10:24:43,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-07-12 10:24:43,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:43,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-07-12 10:24:43,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 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) [2022-07-12 10:24:43,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:24:43,223 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:24:43,223 INFO L186 Difference]: Start difference. First operand has 648 places, 501 transitions, 7910 flow. Second operand 29 states and 4655 transitions. [2022-07-12 10:24:43,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 632 transitions, 11882 flow [2022-07-12 10:24:43,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 632 transitions, 11594 flow, removed 87 selfloop flow, removed 14 redundant places. [2022-07-12 10:24:43,629 INFO L242 Difference]: Finished difference. Result has 661 places, 513 transitions, 8415 flow [2022-07-12 10:24:43,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7706, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8415, PETRI_PLACES=661, PETRI_TRANSITIONS=513} [2022-07-12 10:24:43,630 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 474 predicate places. [2022-07-12 10:24:43,630 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 513 transitions, 8415 flow [2022-07-12 10:24:43,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:43,630 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:43,630 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:43,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-07-12 10:24:43,631 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:43,631 INFO L85 PathProgramCache]: Analyzing trace with hash 676698352, now seen corresponding path program 25 times [2022-07-12 10:24:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:43,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38710343] [2022-07-12 10:24:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:43,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:43,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:43,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38710343] [2022-07-12 10:24:43,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38710343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:43,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:43,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:43,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898278569] [2022-07-12 10:24:43,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:43,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:43,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:43,749 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:43,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 513 transitions, 8415 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:43,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:43,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:43,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:45,094 INFO L129 PetriNetUnfolder]: 712/2675 cut-off events. [2022-07-12 10:24:45,094 INFO L130 PetriNetUnfolder]: For 70421/70488 co-relation queries the response was YES. [2022-07-12 10:24:45,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20789 conditions, 2675 events. 712/2675 cut-off events. For 70421/70488 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21348 event pairs, 304 based on Foata normal form. 27/2632 useless extension candidates. Maximal degree in co-relation 20525. Up to 937 conditions per place. [2022-07-12 10:24:45,164 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 144 changer transitions 61/637 dead transitions. [2022-07-12 10:24:45,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 637 transitions, 12292 flow [2022-07-12 10:24:45,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:24:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:24:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-07-12 10:24:45,167 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-07-12 10:24:45,167 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-07-12 10:24:45,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-07-12 10:24:45,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:45,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-07-12 10:24:45,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 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) [2022-07-12 10:24:45,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:24:45,173 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:24:45,173 INFO L186 Difference]: Start difference. First operand has 661 places, 513 transitions, 8415 flow. Second operand 29 states and 4655 transitions. [2022-07-12 10:24:45,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 637 transitions, 12292 flow [2022-07-12 10:24:45,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 637 transitions, 11989 flow, removed 71 selfloop flow, removed 13 redundant places. [2022-07-12 10:24:45,624 INFO L242 Difference]: Finished difference. Result has 676 places, 525 transitions, 8946 flow [2022-07-12 10:24:45,625 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8193, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8946, PETRI_PLACES=676, PETRI_TRANSITIONS=525} [2022-07-12 10:24:45,625 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 489 predicate places. [2022-07-12 10:24:45,625 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 525 transitions, 8946 flow [2022-07-12 10:24:45,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:45,626 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:45,626 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:45,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-07-12 10:24:45,626 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash -704180468, now seen corresponding path program 26 times [2022-07-12 10:24:45,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:45,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811045873] [2022-07-12 10:24:45,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:45,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:45,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811045873] [2022-07-12 10:24:45,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811045873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:45,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314490536] [2022-07-12 10:24:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:45,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:45,761 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:45,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 525 transitions, 8946 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:45,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:45,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:45,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:47,160 INFO L129 PetriNetUnfolder]: 696/2642 cut-off events. [2022-07-12 10:24:47,161 INFO L130 PetriNetUnfolder]: For 68838/68906 co-relation queries the response was YES. [2022-07-12 10:24:47,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20396 conditions, 2642 events. 696/2642 cut-off events. For 68838/68906 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 21046 event pairs, 306 based on Foata normal form. 27/2601 useless extension candidates. Maximal degree in co-relation 20126. Up to 930 conditions per place. [2022-07-12 10:24:47,212 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 282 selfloop transitions, 125 changer transitions 66/622 dead transitions. [2022-07-12 10:24:47,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 622 transitions, 11884 flow [2022-07-12 10:24:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:24:47,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:24:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-07-12 10:24:47,215 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-07-12 10:24:47,215 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-07-12 10:24:47,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-07-12 10:24:47,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:47,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-07-12 10:24:47,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 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) [2022-07-12 10:24:47,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:47,222 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:47,222 INFO L186 Difference]: Start difference. First operand has 676 places, 525 transitions, 8946 flow. Second operand 30 states and 4806 transitions. [2022-07-12 10:24:47,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 622 transitions, 11884 flow [2022-07-12 10:24:47,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 622 transitions, 11504 flow, removed 74 selfloop flow, removed 12 redundant places. [2022-07-12 10:24:47,644 INFO L242 Difference]: Finished difference. Result has 690 places, 505 transitions, 8281 flow [2022-07-12 10:24:47,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8592, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8281, PETRI_PLACES=690, PETRI_TRANSITIONS=505} [2022-07-12 10:24:47,645 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 503 predicate places. [2022-07-12 10:24:47,645 INFO L495 AbstractCegarLoop]: Abstraction has has 690 places, 505 transitions, 8281 flow [2022-07-12 10:24:47,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:47,645 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:47,645 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:47,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-07-12 10:24:47,646 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1654180704, now seen corresponding path program 27 times [2022-07-12 10:24:47,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:47,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887562239] [2022-07-12 10:24:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:47,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:47,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:47,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887562239] [2022-07-12 10:24:47,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887562239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:47,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:47,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382863271] [2022-07-12 10:24:47,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:47,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:47,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:47,749 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:47,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 505 transitions, 8281 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:47,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:47,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:47,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:48,957 INFO L129 PetriNetUnfolder]: 688/2618 cut-off events. [2022-07-12 10:24:48,957 INFO L130 PetriNetUnfolder]: For 69500/69583 co-relation queries the response was YES. [2022-07-12 10:24:49,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20209 conditions, 2618 events. 688/2618 cut-off events. For 69500/69583 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 20787 event pairs, 304 based on Foata normal form. 35/2584 useless extension candidates. Maximal degree in co-relation 19936. Up to 924 conditions per place. [2022-07-12 10:24:49,025 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 125 changer transitions 64/623 dead transitions. [2022-07-12 10:24:49,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 623 transitions, 11927 flow [2022-07-12 10:24:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:24:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:24:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-07-12 10:24:49,027 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-07-12 10:24:49,028 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-07-12 10:24:49,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-07-12 10:24:49,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:49,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-07-12 10:24:49,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 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) [2022-07-12 10:24:49,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:49,034 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:49,034 INFO L186 Difference]: Start difference. First operand has 690 places, 505 transitions, 8281 flow. Second operand 30 states and 4815 transitions. [2022-07-12 10:24:49,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 623 transitions, 11927 flow [2022-07-12 10:24:49,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 623 transitions, 11379 flow, removed 69 selfloop flow, removed 32 redundant places. [2022-07-12 10:24:49,462 INFO L242 Difference]: Finished difference. Result has 671 places, 507 transitions, 8220 flow [2022-07-12 10:24:49,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7878, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8220, PETRI_PLACES=671, PETRI_TRANSITIONS=507} [2022-07-12 10:24:49,462 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-07-12 10:24:49,462 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 507 transitions, 8220 flow [2022-07-12 10:24:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:49,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:49,463 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:49,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-07-12 10:24:49,463 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -414257954, now seen corresponding path program 28 times [2022-07-12 10:24:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:49,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655892824] [2022-07-12 10:24:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:49,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:49,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:49,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655892824] [2022-07-12 10:24:49,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655892824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:49,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:49,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730259168] [2022-07-12 10:24:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:49,569 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:49,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 507 transitions, 8220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:49,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:49,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:49,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:50,710 INFO L129 PetriNetUnfolder]: 670/2551 cut-off events. [2022-07-12 10:24:50,711 INFO L130 PetriNetUnfolder]: For 64866/64947 co-relation queries the response was YES. [2022-07-12 10:24:50,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19431 conditions, 2551 events. 670/2551 cut-off events. For 64866/64947 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20046 event pairs, 300 based on Foata normal form. 33/2516 useless extension candidates. Maximal degree in co-relation 19166. Up to 916 conditions per place. [2022-07-12 10:24:50,770 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 279 selfloop transitions, 105 changer transitions 64/597 dead transitions. [2022-07-12 10:24:50,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 597 transitions, 10969 flow [2022-07-12 10:24:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:24:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:24:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4490 transitions. [2022-07-12 10:24:50,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636054421768708 [2022-07-12 10:24:50,772 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4490 transitions. [2022-07-12 10:24:50,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4490 transitions. [2022-07-12 10:24:50,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:50,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4490 transitions. [2022-07-12 10:24:50,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.35714285714286) internal successors, (4490), 28 states have internal predecessors, (4490), 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) [2022-07-12 10:24:50,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:24:50,779 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:24:50,779 INFO L186 Difference]: Start difference. First operand has 671 places, 507 transitions, 8220 flow. Second operand 28 states and 4490 transitions. [2022-07-12 10:24:50,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 597 transitions, 10969 flow [2022-07-12 10:24:51,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 597 transitions, 10713 flow, removed 75 selfloop flow, removed 14 redundant places. [2022-07-12 10:24:51,185 INFO L242 Difference]: Finished difference. Result has 678 places, 482 transitions, 7586 flow [2022-07-12 10:24:51,186 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8003, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7586, PETRI_PLACES=678, PETRI_TRANSITIONS=482} [2022-07-12 10:24:51,186 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 491 predicate places. [2022-07-12 10:24:51,186 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 482 transitions, 7586 flow [2022-07-12 10:24:51,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:51,186 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:51,186 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:51,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-07-12 10:24:51,186 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:51,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:51,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1984213508, now seen corresponding path program 29 times [2022-07-12 10:24:51,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:51,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532577403] [2022-07-12 10:24:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:51,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:51,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:51,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532577403] [2022-07-12 10:24:51,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532577403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:51,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:51,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:51,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255472936] [2022-07-12 10:24:51,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:51,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:51,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:51,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:51,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:51,306 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:51,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 482 transitions, 7586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:51,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:51,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:51,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:52,451 INFO L129 PetriNetUnfolder]: 648/2473 cut-off events. [2022-07-12 10:24:52,451 INFO L130 PetriNetUnfolder]: For 62836/62903 co-relation queries the response was YES. [2022-07-12 10:24:52,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18733 conditions, 2473 events. 648/2473 cut-off events. For 62836/62903 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 19242 event pairs, 298 based on Foata normal form. 27/2432 useless extension candidates. Maximal degree in co-relation 18469. Up to 904 conditions per place. [2022-07-12 10:24:52,509 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 89 changer transitions 66/561 dead transitions. [2022-07-12 10:24:52,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 561 transitions, 9992 flow [2022-07-12 10:24:52,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 10:24:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 10:24:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4330 transitions. [2022-07-12 10:24:52,512 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763668430335097 [2022-07-12 10:24:52,512 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4330 transitions. [2022-07-12 10:24:52,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4330 transitions. [2022-07-12 10:24:52,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:52,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4330 transitions. [2022-07-12 10:24:52,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.37037037037038) internal successors, (4330), 27 states have internal predecessors, (4330), 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) [2022-07-12 10:24:52,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 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) [2022-07-12 10:24:52,518 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 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) [2022-07-12 10:24:52,518 INFO L186 Difference]: Start difference. First operand has 678 places, 482 transitions, 7586 flow. Second operand 27 states and 4330 transitions. [2022-07-12 10:24:52,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 561 transitions, 9992 flow [2022-07-12 10:24:52,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 561 transitions, 9375 flow, removed 37 selfloop flow, removed 34 redundant places. [2022-07-12 10:24:52,882 INFO L242 Difference]: Finished difference. Result has 644 places, 445 transitions, 6361 flow [2022-07-12 10:24:52,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7041, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6361, PETRI_PLACES=644, PETRI_TRANSITIONS=445} [2022-07-12 10:24:52,883 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 457 predicate places. [2022-07-12 10:24:52,883 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 445 transitions, 6361 flow [2022-07-12 10:24:52,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:52,883 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:52,883 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:52,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-07-12 10:24:52,883 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:52,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:52,884 INFO L85 PathProgramCache]: Analyzing trace with hash 624038396, now seen corresponding path program 30 times [2022-07-12 10:24:52,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:52,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519068719] [2022-07-12 10:24:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:52,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:52,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519068719] [2022-07-12 10:24:52,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519068719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:52,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:52,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082131748] [2022-07-12 10:24:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:52,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:52,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:52,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:52,986 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:52,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 445 transitions, 6361 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:52,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:52,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:52,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:54,062 INFO L129 PetriNetUnfolder]: 620/2367 cut-off events. [2022-07-12 10:24:54,062 INFO L130 PetriNetUnfolder]: For 56583/56653 co-relation queries the response was YES. [2022-07-12 10:24:54,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17489 conditions, 2367 events. 620/2367 cut-off events. For 56583/56653 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18081 event pairs, 294 based on Foata normal form. 29/2331 useless extension candidates. Maximal degree in co-relation 17237. Up to 886 conditions per place. [2022-07-12 10:24:54,126 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 67 changer transitions 68/511 dead transitions. [2022-07-12 10:24:54,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 511 transitions, 8308 flow [2022-07-12 10:24:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:24:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:24:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4783 transitions. [2022-07-12 10:24:54,129 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7592063492063492 [2022-07-12 10:24:54,129 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4783 transitions. [2022-07-12 10:24:54,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4783 transitions. [2022-07-12 10:24:54,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:54,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4783 transitions. [2022-07-12 10:24:54,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.43333333333334) internal successors, (4783), 30 states have internal predecessors, (4783), 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) [2022-07-12 10:24:54,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:54,136 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:24:54,136 INFO L186 Difference]: Start difference. First operand has 644 places, 445 transitions, 6361 flow. Second operand 30 states and 4783 transitions. [2022-07-12 10:24:54,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 511 transitions, 8308 flow [2022-07-12 10:24:54,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 511 transitions, 7673 flow, removed 36 selfloop flow, removed 38 redundant places. [2022-07-12 10:24:54,460 INFO L242 Difference]: Finished difference. Result has 600 places, 394 transitions, 4823 flow [2022-07-12 10:24:54,461 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5771, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4823, PETRI_PLACES=600, PETRI_TRANSITIONS=394} [2022-07-12 10:24:54,461 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 413 predicate places. [2022-07-12 10:24:54,462 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 394 transitions, 4823 flow [2022-07-12 10:24:54,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:54,462 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:54,462 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:54,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-07-12 10:24:54,462 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:54,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1193091862, now seen corresponding path program 31 times [2022-07-12 10:24:54,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:54,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245339419] [2022-07-12 10:24:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:54,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:54,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:54,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245339419] [2022-07-12 10:24:54,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245339419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:54,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:54,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:54,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189006285] [2022-07-12 10:24:54,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:54,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:54,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:54,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:54,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:54,571 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:54,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 394 transitions, 4823 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:54,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:54,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:54,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:55,780 INFO L129 PetriNetUnfolder]: 643/2444 cut-off events. [2022-07-12 10:24:55,780 INFO L130 PetriNetUnfolder]: For 56001/56051 co-relation queries the response was YES. [2022-07-12 10:24:55,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17725 conditions, 2444 events. 643/2444 cut-off events. For 56001/56051 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18806 event pairs, 306 based on Foata normal form. 13/2390 useless extension candidates. Maximal degree in co-relation 17489. Up to 886 conditions per place. [2022-07-12 10:24:55,832 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 92 changer transitions 68/542 dead transitions. [2022-07-12 10:24:55,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 542 transitions, 8895 flow [2022-07-12 10:24:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:24:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:24:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-07-12 10:24:55,834 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-07-12 10:24:55,835 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-07-12 10:24:55,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-07-12 10:24:55,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:55,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-07-12 10:24:55,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 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) [2022-07-12 10:24:55,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:24:55,843 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:24:55,843 INFO L186 Difference]: Start difference. First operand has 600 places, 394 transitions, 4823 flow. Second operand 38 states and 6072 transitions. [2022-07-12 10:24:55,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 542 transitions, 8895 flow [2022-07-12 10:24:56,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 542 transitions, 8008 flow, removed 66 selfloop flow, removed 39 redundant places. [2022-07-12 10:24:56,115 INFO L242 Difference]: Finished difference. Result has 561 places, 414 transitions, 5038 flow [2022-07-12 10:24:56,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5038, PETRI_PLACES=561, PETRI_TRANSITIONS=414} [2022-07-12 10:24:56,116 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 374 predicate places. [2022-07-12 10:24:56,116 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 414 transitions, 5038 flow [2022-07-12 10:24:56,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:56,116 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:56,116 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:56,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-07-12 10:24:56,116 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:56,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1145726642, now seen corresponding path program 32 times [2022-07-12 10:24:56,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:56,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879779257] [2022-07-12 10:24:56,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:56,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:56,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:56,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879779257] [2022-07-12 10:24:56,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879779257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:56,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:56,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455995984] [2022-07-12 10:24:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:56,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:56,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:56,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:56,236 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:56,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 414 transitions, 5038 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:56,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:56,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:56,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:57,461 INFO L129 PetriNetUnfolder]: 642/2463 cut-off events. [2022-07-12 10:24:57,461 INFO L130 PetriNetUnfolder]: For 52804/52864 co-relation queries the response was YES. [2022-07-12 10:24:57,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17386 conditions, 2463 events. 642/2463 cut-off events. For 52804/52864 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 19159 event pairs, 317 based on Foata normal form. 17/2414 useless extension candidates. Maximal degree in co-relation 17154. Up to 886 conditions per place. [2022-07-12 10:24:57,516 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 236 selfloop transitions, 95 changer transitions 67/547 dead transitions. [2022-07-12 10:24:57,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 547 transitions, 8737 flow [2022-07-12 10:24:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:24:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:24:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-07-12 10:24:57,519 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-07-12 10:24:57,519 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-07-12 10:24:57,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-07-12 10:24:57,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:57,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-07-12 10:24:57,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 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) [2022-07-12 10:24:57,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 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) [2022-07-12 10:24:57,527 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 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) [2022-07-12 10:24:57,527 INFO L186 Difference]: Start difference. First operand has 561 places, 414 transitions, 5038 flow. Second operand 35 states and 5604 transitions. [2022-07-12 10:24:57,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 547 transitions, 8737 flow [2022-07-12 10:24:57,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 547 transitions, 8417 flow, removed 111 selfloop flow, removed 17 redundant places. [2022-07-12 10:24:57,774 INFO L242 Difference]: Finished difference. Result has 579 places, 433 transitions, 5684 flow [2022-07-12 10:24:57,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5684, PETRI_PLACES=579, PETRI_TRANSITIONS=433} [2022-07-12 10:24:57,775 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 392 predicate places. [2022-07-12 10:24:57,776 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 433 transitions, 5684 flow [2022-07-12 10:24:57,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:57,776 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:57,776 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:57,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-07-12 10:24:57,776 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:57,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:57,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1025257446, now seen corresponding path program 33 times [2022-07-12 10:24:57,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:57,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119932326] [2022-07-12 10:24:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:57,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:57,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:57,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119932326] [2022-07-12 10:24:57,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119932326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:57,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:57,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:57,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853339878] [2022-07-12 10:24:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:57,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:57,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:57,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:57,910 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:57,910 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 433 transitions, 5684 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:57,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:57,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:57,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:24:59,233 INFO L129 PetriNetUnfolder]: 666/2538 cut-off events. [2022-07-12 10:24:59,233 INFO L130 PetriNetUnfolder]: For 58296/58350 co-relation queries the response was YES. [2022-07-12 10:24:59,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18400 conditions, 2538 events. 666/2538 cut-off events. For 58296/58350 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19938 event pairs, 307 based on Foata normal form. 17/2488 useless extension candidates. Maximal degree in co-relation 18158. Up to 886 conditions per place. [2022-07-12 10:24:59,282 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 107 changer transitions 68/573 dead transitions. [2022-07-12 10:24:59,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 573 transitions, 9700 flow [2022-07-12 10:24:59,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:24:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:24:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-07-12 10:24:59,285 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-07-12 10:24:59,285 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-07-12 10:24:59,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-07-12 10:24:59,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:24:59,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-07-12 10:24:59,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 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) [2022-07-12 10:24:59,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:24:59,293 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:24:59,293 INFO L186 Difference]: Start difference. First operand has 579 places, 433 transitions, 5684 flow. Second operand 37 states and 5918 transitions. [2022-07-12 10:24:59,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 573 transitions, 9700 flow [2022-07-12 10:24:59,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 573 transitions, 9249 flow, removed 152 selfloop flow, removed 17 redundant places. [2022-07-12 10:24:59,599 INFO L242 Difference]: Finished difference. Result has 602 places, 453 transitions, 6290 flow [2022-07-12 10:24:59,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5360, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6290, PETRI_PLACES=602, PETRI_TRANSITIONS=453} [2022-07-12 10:24:59,600 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 415 predicate places. [2022-07-12 10:24:59,600 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 453 transitions, 6290 flow [2022-07-12 10:24:59,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:59,600 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:24:59,600 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:24:59,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-07-12 10:24:59,600 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:24:59,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:24:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 127385278, now seen corresponding path program 34 times [2022-07-12 10:24:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:24:59,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760306408] [2022-07-12 10:24:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:24:59,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:24:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:24:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:24:59,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:24:59,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760306408] [2022-07-12 10:24:59,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760306408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:24:59,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:24:59,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:24:59,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196089934] [2022-07-12 10:24:59,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:24:59,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:24:59,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:24:59,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:24:59,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:24:59,710 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:24:59,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 453 transitions, 6290 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:24:59,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:24:59,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:24:59,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:00,971 INFO L129 PetriNetUnfolder]: 661/2547 cut-off events. [2022-07-12 10:25:00,971 INFO L130 PetriNetUnfolder]: For 59172/59222 co-relation queries the response was YES. [2022-07-12 10:25:01,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18516 conditions, 2547 events. 661/2547 cut-off events. For 59172/59222 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 20058 event pairs, 315 based on Foata normal form. 16/2497 useless extension candidates. Maximal degree in co-relation 18263. Up to 886 conditions per place. [2022-07-12 10:25:01,032 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 245 selfloop transitions, 108 changer transitions 70/572 dead transitions. [2022-07-12 10:25:01,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 572 transitions, 9912 flow [2022-07-12 10:25:01,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:25:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 10:25:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-07-12 10:25:01,035 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-07-12 10:25:01,035 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-07-12 10:25:01,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-07-12 10:25:01,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:01,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-07-12 10:25:01,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 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) [2022-07-12 10:25:01,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:25:01,044 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:25:01,044 INFO L186 Difference]: Start difference. First operand has 602 places, 453 transitions, 6290 flow. Second operand 36 states and 5763 transitions. [2022-07-12 10:25:01,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 572 transitions, 9912 flow [2022-07-12 10:25:01,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 572 transitions, 9420 flow, removed 197 selfloop flow, removed 18 redundant places. [2022-07-12 10:25:01,407 INFO L242 Difference]: Finished difference. Result has 619 places, 458 transitions, 6482 flow [2022-07-12 10:25:01,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5997, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6482, PETRI_PLACES=619, PETRI_TRANSITIONS=458} [2022-07-12 10:25:01,407 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 432 predicate places. [2022-07-12 10:25:01,408 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 458 transitions, 6482 flow [2022-07-12 10:25:01,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:01,408 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:01,408 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:01,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-07-12 10:25:01,408 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1886489240, now seen corresponding path program 35 times [2022-07-12 10:25:01,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:01,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714321453] [2022-07-12 10:25:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:01,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:01,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714321453] [2022-07-12 10:25:01,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714321453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:01,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:01,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:01,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568050509] [2022-07-12 10:25:01,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:01,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:01,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:01,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:01,523 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:01,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 458 transitions, 6482 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:01,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:01,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:01,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:03,041 INFO L129 PetriNetUnfolder]: 703/2690 cut-off events. [2022-07-12 10:25:03,041 INFO L130 PetriNetUnfolder]: For 62581/62627 co-relation queries the response was YES. [2022-07-12 10:25:03,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19560 conditions, 2690 events. 703/2690 cut-off events. For 62581/62627 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21576 event pairs, 313 based on Foata normal form. 12/2636 useless extension candidates. Maximal degree in co-relation 19300. Up to 888 conditions per place. [2022-07-12 10:25:03,103 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 124 changer transitions 85/632 dead transitions. [2022-07-12 10:25:03,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 632 transitions, 11213 flow [2022-07-12 10:25:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-12 10:25:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-12 10:25:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-07-12 10:25:03,107 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-07-12 10:25:03,107 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-07-12 10:25:03,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-07-12 10:25:03,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:03,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-07-12 10:25:03,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 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) [2022-07-12 10:25:03,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:25:03,118 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:25:03,118 INFO L186 Difference]: Start difference. First operand has 619 places, 458 transitions, 6482 flow. Second operand 46 states and 7340 transitions. [2022-07-12 10:25:03,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 632 transitions, 11213 flow [2022-07-12 10:25:03,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 632 transitions, 10599 flow, removed 129 selfloop flow, removed 23 redundant places. [2022-07-12 10:25:03,493 INFO L242 Difference]: Finished difference. Result has 653 places, 483 transitions, 6911 flow [2022-07-12 10:25:03,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6911, PETRI_PLACES=653, PETRI_TRANSITIONS=483} [2022-07-12 10:25:03,494 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 466 predicate places. [2022-07-12 10:25:03,494 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 483 transitions, 6911 flow [2022-07-12 10:25:03,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:03,495 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:03,495 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:03,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-07-12 10:25:03,495 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1168325792, now seen corresponding path program 36 times [2022-07-12 10:25:03,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:03,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815920650] [2022-07-12 10:25:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:03,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:03,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:03,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815920650] [2022-07-12 10:25:03,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815920650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:03,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:03,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:03,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776077144] [2022-07-12 10:25:03,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:03,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:03,610 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:03,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 483 transitions, 6911 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:03,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:03,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:03,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:05,172 INFO L129 PetriNetUnfolder]: 698/2668 cut-off events. [2022-07-12 10:25:05,172 INFO L130 PetriNetUnfolder]: For 62119/62169 co-relation queries the response was YES. [2022-07-12 10:25:05,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19519 conditions, 2668 events. 698/2668 cut-off events. For 62119/62169 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21296 event pairs, 316 based on Foata normal form. 16/2622 useless extension candidates. Maximal degree in co-relation 19245. Up to 884 conditions per place. [2022-07-12 10:25:05,236 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 266 selfloop transitions, 122 changer transitions 83/620 dead transitions. [2022-07-12 10:25:05,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 620 transitions, 10929 flow [2022-07-12 10:25:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-12 10:25:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-12 10:25:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-07-12 10:25:05,240 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-07-12 10:25:05,240 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-07-12 10:25:05,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-07-12 10:25:05,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:05,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-07-12 10:25:05,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 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) [2022-07-12 10:25:05,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 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) [2022-07-12 10:25:05,250 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 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) [2022-07-12 10:25:05,250 INFO L186 Difference]: Start difference. First operand has 653 places, 483 transitions, 6911 flow. Second operand 45 states and 7186 transitions. [2022-07-12 10:25:05,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 620 transitions, 10929 flow [2022-07-12 10:25:05,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 620 transitions, 10546 flow, removed 158 selfloop flow, removed 32 redundant places. [2022-07-12 10:25:05,636 INFO L242 Difference]: Finished difference. Result has 665 places, 486 transitions, 7208 flow [2022-07-12 10:25:05,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6751, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7208, PETRI_PLACES=665, PETRI_TRANSITIONS=486} [2022-07-12 10:25:05,636 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 478 predicate places. [2022-07-12 10:25:05,637 INFO L495 AbstractCegarLoop]: Abstraction has has 665 places, 486 transitions, 7208 flow [2022-07-12 10:25:05,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:05,637 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:05,637 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:05,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-07-12 10:25:05,637 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1741599682, now seen corresponding path program 37 times [2022-07-12 10:25:05,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:05,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694163080] [2022-07-12 10:25:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:05,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:05,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:05,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694163080] [2022-07-12 10:25:05,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694163080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:05,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:05,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009486264] [2022-07-12 10:25:05,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:05,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:05,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:05,748 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:05,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 486 transitions, 7208 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:05,749 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:05,749 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:05,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:07,137 INFO L129 PetriNetUnfolder]: 698/2663 cut-off events. [2022-07-12 10:25:07,137 INFO L130 PetriNetUnfolder]: For 63861/63917 co-relation queries the response was YES. [2022-07-12 10:25:07,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19649 conditions, 2663 events. 698/2663 cut-off events. For 63861/63917 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21252 event pairs, 323 based on Foata normal form. 16/2612 useless extension candidates. Maximal degree in co-relation 19372. Up to 904 conditions per place. [2022-07-12 10:25:07,203 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 129 changer transitions 79/626 dead transitions. [2022-07-12 10:25:07,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 626 transitions, 11234 flow [2022-07-12 10:25:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:25:07,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 10:25:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-07-12 10:25:07,206 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-07-12 10:25:07,206 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-07-12 10:25:07,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-07-12 10:25:07,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:07,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-07-12 10:25:07,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 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) [2022-07-12 10:25:07,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:25:07,214 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:25:07,214 INFO L186 Difference]: Start difference. First operand has 665 places, 486 transitions, 7208 flow. Second operand 36 states and 5763 transitions. [2022-07-12 10:25:07,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 626 transitions, 11234 flow [2022-07-12 10:25:07,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 626 transitions, 10836 flow, removed 109 selfloop flow, removed 34 redundant places. [2022-07-12 10:25:07,605 INFO L242 Difference]: Finished difference. Result has 657 places, 502 transitions, 7656 flow [2022-07-12 10:25:07,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6948, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7656, PETRI_PLACES=657, PETRI_TRANSITIONS=502} [2022-07-12 10:25:07,605 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2022-07-12 10:25:07,605 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 502 transitions, 7656 flow [2022-07-12 10:25:07,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:07,606 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:07,606 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:07,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-07-12 10:25:07,606 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:07,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash -376492098, now seen corresponding path program 38 times [2022-07-12 10:25:07,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:07,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731950224] [2022-07-12 10:25:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:07,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:07,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:07,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731950224] [2022-07-12 10:25:07,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731950224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:07,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:07,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590439042] [2022-07-12 10:25:07,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:07,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:07,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:07,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:07,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:07,725 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:07,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 502 transitions, 7656 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:07,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:07,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:07,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:09,123 INFO L129 PetriNetUnfolder]: 721/2742 cut-off events. [2022-07-12 10:25:09,123 INFO L130 PetriNetUnfolder]: For 66004/66060 co-relation queries the response was YES. [2022-07-12 10:25:09,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20501 conditions, 2742 events. 721/2742 cut-off events. For 66004/66060 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22128 event pairs, 332 based on Foata normal form. 16/2689 useless extension candidates. Maximal degree in co-relation 20231. Up to 916 conditions per place. [2022-07-12 10:25:09,189 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 141 changer transitions 70/635 dead transitions. [2022-07-12 10:25:09,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 635 transitions, 11615 flow [2022-07-12 10:25:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:25:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:25:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6084 transitions. [2022-07-12 10:25:09,192 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762406015037594 [2022-07-12 10:25:09,192 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6084 transitions. [2022-07-12 10:25:09,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6084 transitions. [2022-07-12 10:25:09,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:09,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6084 transitions. [2022-07-12 10:25:09,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.10526315789474) internal successors, (6084), 38 states have internal predecessors, (6084), 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) [2022-07-12 10:25:09,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:25:09,201 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:25:09,201 INFO L186 Difference]: Start difference. First operand has 657 places, 502 transitions, 7656 flow. Second operand 38 states and 6084 transitions. [2022-07-12 10:25:09,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 635 transitions, 11615 flow [2022-07-12 10:25:09,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 635 transitions, 11052 flow, removed 75 selfloop flow, removed 26 redundant places. [2022-07-12 10:25:09,633 INFO L242 Difference]: Finished difference. Result has 669 places, 522 transitions, 8102 flow [2022-07-12 10:25:09,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7248, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8102, PETRI_PLACES=669, PETRI_TRANSITIONS=522} [2022-07-12 10:25:09,634 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 482 predicate places. [2022-07-12 10:25:09,634 INFO L495 AbstractCegarLoop]: Abstraction has has 669 places, 522 transitions, 8102 flow [2022-07-12 10:25:09,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:09,635 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:09,635 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:09,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-07-12 10:25:09,635 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:09,635 INFO L85 PathProgramCache]: Analyzing trace with hash -850260178, now seen corresponding path program 39 times [2022-07-12 10:25:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157590051] [2022-07-12 10:25:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:09,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:09,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157590051] [2022-07-12 10:25:09,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157590051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:09,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:09,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:09,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41789559] [2022-07-12 10:25:09,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:09,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:09,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:09,787 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:09,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 522 transitions, 8102 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:09,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:09,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:09,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:11,329 INFO L129 PetriNetUnfolder]: 746/2815 cut-off events. [2022-07-12 10:25:11,329 INFO L130 PetriNetUnfolder]: For 68339/68389 co-relation queries the response was YES. [2022-07-12 10:25:11,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21064 conditions, 2815 events. 746/2815 cut-off events. For 68339/68389 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 22838 event pairs, 327 based on Foata normal form. 16/2763 useless extension candidates. Maximal degree in co-relation 20790. Up to 928 conditions per place. [2022-07-12 10:25:11,385 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 145 changer transitions 71/653 dead transitions. [2022-07-12 10:25:11,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 653 transitions, 11999 flow [2022-07-12 10:25:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:25:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:25:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2022-07-12 10:25:11,387 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2022-07-12 10:25:11,388 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2022-07-12 10:25:11,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2022-07-12 10:25:11,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:11,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2022-07-12 10:25:11,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 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) [2022-07-12 10:25:11,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:25:11,395 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:25:11,396 INFO L186 Difference]: Start difference. First operand has 669 places, 522 transitions, 8102 flow. Second operand 37 states and 5926 transitions. [2022-07-12 10:25:11,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 653 transitions, 11999 flow [2022-07-12 10:25:11,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 653 transitions, 11716 flow, removed 77 selfloop flow, removed 19 redundant places. [2022-07-12 10:25:11,808 INFO L242 Difference]: Finished difference. Result has 686 places, 541 transitions, 8764 flow [2022-07-12 10:25:11,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7914, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8764, PETRI_PLACES=686, PETRI_TRANSITIONS=541} [2022-07-12 10:25:11,809 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 499 predicate places. [2022-07-12 10:25:11,809 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 541 transitions, 8764 flow [2022-07-12 10:25:11,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:11,810 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:11,810 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:11,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-07-12 10:25:11,810 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:11,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1813729488, now seen corresponding path program 40 times [2022-07-12 10:25:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:11,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511864953] [2022-07-12 10:25:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:11,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511864953] [2022-07-12 10:25:11,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511864953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:11,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:11,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749563036] [2022-07-12 10:25:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:11,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:11,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:11,922 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:11,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 541 transitions, 8764 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:11,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:11,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:11,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:13,383 INFO L129 PetriNetUnfolder]: 741/2803 cut-off events. [2022-07-12 10:25:13,384 INFO L130 PetriNetUnfolder]: For 70001/70051 co-relation queries the response was YES. [2022-07-12 10:25:13,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21156 conditions, 2803 events. 741/2803 cut-off events. For 70001/70051 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22779 event pairs, 310 based on Foata normal form. 16/2751 useless extension candidates. Maximal degree in co-relation 20874. Up to 924 conditions per place. [2022-07-12 10:25:13,454 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 152 changer transitions 75/670 dead transitions. [2022-07-12 10:25:13,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 670 transitions, 12785 flow [2022-07-12 10:25:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:25:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:25:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-07-12 10:25:13,457 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-07-12 10:25:13,457 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-07-12 10:25:13,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-07-12 10:25:13,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:13,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-07-12 10:25:13,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 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) [2022-07-12 10:25:13,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:25:13,465 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:25:13,465 INFO L186 Difference]: Start difference. First operand has 686 places, 541 transitions, 8764 flow. Second operand 38 states and 6078 transitions. [2022-07-12 10:25:13,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 670 transitions, 12785 flow [2022-07-12 10:25:13,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 670 transitions, 12466 flow, removed 86 selfloop flow, removed 21 redundant places. [2022-07-12 10:25:13,900 INFO L242 Difference]: Finished difference. Result has 702 places, 547 transitions, 9119 flow [2022-07-12 10:25:13,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8540, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9119, PETRI_PLACES=702, PETRI_TRANSITIONS=547} [2022-07-12 10:25:13,901 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 515 predicate places. [2022-07-12 10:25:13,901 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 547 transitions, 9119 flow [2022-07-12 10:25:13,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:13,902 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:13,902 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:13,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-07-12 10:25:13,902 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:13,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:13,902 INFO L85 PathProgramCache]: Analyzing trace with hash -963701778, now seen corresponding path program 41 times [2022-07-12 10:25:13,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:13,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609720213] [2022-07-12 10:25:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:13,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:14,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:14,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609720213] [2022-07-12 10:25:14,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609720213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:14,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:14,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:14,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890771989] [2022-07-12 10:25:14,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:14,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:14,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:14,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:14,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:14,008 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:14,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 547 transitions, 9119 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:14,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:14,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:14,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:15,471 INFO L129 PetriNetUnfolder]: 736/2808 cut-off events. [2022-07-12 10:25:15,471 INFO L130 PetriNetUnfolder]: For 71092/71138 co-relation queries the response was YES. [2022-07-12 10:25:15,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21245 conditions, 2808 events. 736/2808 cut-off events. For 71092/71138 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22755 event pairs, 324 based on Foata normal form. 12/2752 useless extension candidates. Maximal degree in co-relation 20957. Up to 920 conditions per place. [2022-07-12 10:25:15,547 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 144 changer transitions 75/671 dead transitions. [2022-07-12 10:25:15,547 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 671 transitions, 13039 flow [2022-07-12 10:25:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:25:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:25:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-07-12 10:25:15,550 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-07-12 10:25:15,550 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-07-12 10:25:15,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-07-12 10:25:15,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:15,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-07-12 10:25:15,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 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) [2022-07-12 10:25:15,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:25:15,558 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:25:15,558 INFO L186 Difference]: Start difference. First operand has 702 places, 547 transitions, 9119 flow. Second operand 38 states and 6080 transitions. [2022-07-12 10:25:15,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 671 transitions, 13039 flow [2022-07-12 10:25:15,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 671 transitions, 12730 flow, removed 96 selfloop flow, removed 21 redundant places. [2022-07-12 10:25:15,994 INFO L242 Difference]: Finished difference. Result has 717 places, 552 transitions, 9440 flow [2022-07-12 10:25:15,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8897, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9440, PETRI_PLACES=717, PETRI_TRANSITIONS=552} [2022-07-12 10:25:15,994 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 530 predicate places. [2022-07-12 10:25:15,994 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 552 transitions, 9440 flow [2022-07-12 10:25:15,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:15,995 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:15,995 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:15,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-07-12 10:25:15,995 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:15,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:15,995 INFO L85 PathProgramCache]: Analyzing trace with hash -313946166, now seen corresponding path program 42 times [2022-07-12 10:25:15,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:15,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61985231] [2022-07-12 10:25:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:15,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:16,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:16,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61985231] [2022-07-12 10:25:16,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61985231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:16,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:16,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816076671] [2022-07-12 10:25:16,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:16,119 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:16,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 552 transitions, 9440 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:16,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:16,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:16,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:17,554 INFO L129 PetriNetUnfolder]: 730/2802 cut-off events. [2022-07-12 10:25:17,555 INFO L130 PetriNetUnfolder]: For 72044/72100 co-relation queries the response was YES. [2022-07-12 10:25:17,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21374 conditions, 2802 events. 730/2802 cut-off events. For 72044/72100 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 22804 event pairs, 324 based on Foata normal form. 16/2750 useless extension candidates. Maximal degree in co-relation 21081. Up to 916 conditions per place. [2022-07-12 10:25:17,626 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 297 selfloop transitions, 148 changer transitions 72/666 dead transitions. [2022-07-12 10:25:17,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 666 transitions, 13145 flow [2022-07-12 10:25:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:25:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:25:17,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-07-12 10:25:17,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-07-12 10:25:17,629 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-07-12 10:25:17,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-07-12 10:25:17,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:17,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-07-12 10:25:17,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 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) [2022-07-12 10:25:17,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:25:17,637 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:25:17,637 INFO L186 Difference]: Start difference. First operand has 717 places, 552 transitions, 9440 flow. Second operand 37 states and 5924 transitions. [2022-07-12 10:25:17,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 666 transitions, 13145 flow [2022-07-12 10:25:18,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 666 transitions, 12838 flow, removed 90 selfloop flow, removed 20 redundant places. [2022-07-12 10:25:18,096 INFO L242 Difference]: Finished difference. Result has 732 places, 555 transitions, 9710 flow [2022-07-12 10:25:18,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9220, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9710, PETRI_PLACES=732, PETRI_TRANSITIONS=555} [2022-07-12 10:25:18,097 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-07-12 10:25:18,097 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 555 transitions, 9710 flow [2022-07-12 10:25:18,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:18,099 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:18,099 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-07-12 10:25:18,100 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash 80858668, now seen corresponding path program 43 times [2022-07-12 10:25:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:18,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017957314] [2022-07-12 10:25:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:18,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:18,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017957314] [2022-07-12 10:25:18,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017957314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:18,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:18,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:18,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378541933] [2022-07-12 10:25:18,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:18,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:18,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:18,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:18,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:18,202 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:18,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 555 transitions, 9710 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:18,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:18,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:18,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:19,538 INFO L129 PetriNetUnfolder]: 718/2747 cut-off events. [2022-07-12 10:25:19,538 INFO L130 PetriNetUnfolder]: For 71716/71772 co-relation queries the response was YES. [2022-07-12 10:25:19,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21031 conditions, 2747 events. 718/2747 cut-off events. For 71716/71772 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22195 event pairs, 319 based on Foata normal form. 16/2696 useless extension candidates. Maximal degree in co-relation 20732. Up to 926 conditions per place. [2022-07-12 10:25:19,607 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 289 selfloop transitions, 162 changer transitions 66/666 dead transitions. [2022-07-12 10:25:19,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 666 transitions, 13349 flow [2022-07-12 10:25:19,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4812 transitions. [2022-07-12 10:25:19,609 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-07-12 10:25:19,609 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4812 transitions. [2022-07-12 10:25:19,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4812 transitions. [2022-07-12 10:25:19,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:19,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4812 transitions. [2022-07-12 10:25:19,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.4) internal successors, (4812), 30 states have internal predecessors, (4812), 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) [2022-07-12 10:25:19,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:19,615 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:19,615 INFO L186 Difference]: Start difference. First operand has 732 places, 555 transitions, 9710 flow. Second operand 30 states and 4812 transitions. [2022-07-12 10:25:19,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 738 places, 666 transitions, 13349 flow [2022-07-12 10:25:20,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 666 transitions, 12975 flow, removed 83 selfloop flow, removed 27 redundant places. [2022-07-12 10:25:20,094 INFO L242 Difference]: Finished difference. Result has 724 places, 560 transitions, 9986 flow [2022-07-12 10:25:20,094 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9399, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9986, PETRI_PLACES=724, PETRI_TRANSITIONS=560} [2022-07-12 10:25:20,094 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 537 predicate places. [2022-07-12 10:25:20,094 INFO L495 AbstractCegarLoop]: Abstraction has has 724 places, 560 transitions, 9986 flow [2022-07-12 10:25:20,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:20,095 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:20,095 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:20,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-07-12 10:25:20,095 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash -119362468, now seen corresponding path program 44 times [2022-07-12 10:25:20,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:20,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888994458] [2022-07-12 10:25:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:20,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:20,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:20,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888994458] [2022-07-12 10:25:20,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888994458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:20,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:20,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086812405] [2022-07-12 10:25:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:20,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:20,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:20,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:20,220 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:20,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 560 transitions, 9986 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:20,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:20,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:20,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:21,592 INFO L129 PetriNetUnfolder]: 724/2775 cut-off events. [2022-07-12 10:25:21,592 INFO L130 PetriNetUnfolder]: For 71492/71538 co-relation queries the response was YES. [2022-07-12 10:25:21,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21300 conditions, 2775 events. 724/2775 cut-off events. For 71492/71538 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22450 event pairs, 329 based on Foata normal form. 12/2718 useless extension candidates. Maximal degree in co-relation 21011. Up to 926 conditions per place. [2022-07-12 10:25:21,665 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 165 changer transitions 60/659 dead transitions. [2022-07-12 10:25:21,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 659 transitions, 13348 flow [2022-07-12 10:25:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:25:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:25:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-07-12 10:25:21,668 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-07-12 10:25:21,668 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-07-12 10:25:21,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-07-12 10:25:21,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:21,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-07-12 10:25:21,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 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) [2022-07-12 10:25:21,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:21,674 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:21,674 INFO L186 Difference]: Start difference. First operand has 724 places, 560 transitions, 9986 flow. Second operand 29 states and 4658 transitions. [2022-07-12 10:25:21,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 659 transitions, 13348 flow [2022-07-12 10:25:22,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 659 transitions, 12977 flow, removed 85 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:22,153 INFO L242 Difference]: Finished difference. Result has 738 places, 572 transitions, 10467 flow [2022-07-12 10:25:22,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9672, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10467, PETRI_PLACES=738, PETRI_TRANSITIONS=572} [2022-07-12 10:25:22,154 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 551 predicate places. [2022-07-12 10:25:22,154 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 572 transitions, 10467 flow [2022-07-12 10:25:22,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:22,154 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:22,154 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-07-12 10:25:22,154 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1808042808, now seen corresponding path program 45 times [2022-07-12 10:25:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:22,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733177375] [2022-07-12 10:25:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:22,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:22,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733177375] [2022-07-12 10:25:22,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733177375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:22,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:22,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:22,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632142821] [2022-07-12 10:25:22,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:22,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:22,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:22,263 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:22,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 572 transitions, 10467 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:22,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:22,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:22,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:23,578 INFO L129 PetriNetUnfolder]: 711/2722 cut-off events. [2022-07-12 10:25:23,578 INFO L130 PetriNetUnfolder]: For 69917/69977 co-relation queries the response was YES. [2022-07-12 10:25:23,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20770 conditions, 2722 events. 711/2722 cut-off events. For 69917/69977 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21987 event pairs, 310 based on Foata normal form. 20/2675 useless extension candidates. Maximal degree in co-relation 20476. Up to 926 conditions per place. [2022-07-12 10:25:23,640 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 147 changer transitions 71/657 dead transitions. [2022-07-12 10:25:23,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 657 transitions, 13264 flow [2022-07-12 10:25:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:25:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:25:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4492 transitions. [2022-07-12 10:25:23,643 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7639455782312925 [2022-07-12 10:25:23,643 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4492 transitions. [2022-07-12 10:25:23,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4492 transitions. [2022-07-12 10:25:23,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:23,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4492 transitions. [2022-07-12 10:25:23,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.42857142857142) internal successors, (4492), 28 states have internal predecessors, (4492), 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) [2022-07-12 10:25:23,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:25:23,649 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:25:23,649 INFO L186 Difference]: Start difference. First operand has 738 places, 572 transitions, 10467 flow. Second operand 28 states and 4492 transitions. [2022-07-12 10:25:23,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 657 transitions, 13264 flow [2022-07-12 10:25:24,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 657 transitions, 12878 flow, removed 71 selfloop flow, removed 14 redundant places. [2022-07-12 10:25:24,140 INFO L242 Difference]: Finished difference. Result has 746 places, 547 transitions, 9698 flow [2022-07-12 10:25:24,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10112, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9698, PETRI_PLACES=746, PETRI_TRANSITIONS=547} [2022-07-12 10:25:24,141 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 559 predicate places. [2022-07-12 10:25:24,141 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 547 transitions, 9698 flow [2022-07-12 10:25:24,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:24,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:24,142 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:24,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-07-12 10:25:24,142 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:24,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:24,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2072334494, now seen corresponding path program 46 times [2022-07-12 10:25:24,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:24,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967037794] [2022-07-12 10:25:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:24,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:24,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967037794] [2022-07-12 10:25:24,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967037794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:24,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:24,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:24,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128867800] [2022-07-12 10:25:24,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:24,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:24,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:24,248 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:24,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 547 transitions, 9698 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:24,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:24,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:24,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:25,577 INFO L129 PetriNetUnfolder]: 704/2698 cut-off events. [2022-07-12 10:25:25,577 INFO L130 PetriNetUnfolder]: For 69701/69751 co-relation queries the response was YES. [2022-07-12 10:25:25,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20637 conditions, 2698 events. 704/2698 cut-off events. For 69701/69751 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21603 event pairs, 317 based on Foata normal form. 16/2647 useless extension candidates. Maximal degree in co-relation 20343. Up to 926 conditions per place. [2022-07-12 10:25:25,646 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 149 changer transitions 62/636 dead transitions. [2022-07-12 10:25:25,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 742 places, 636 transitions, 12778 flow [2022-07-12 10:25:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-07-12 10:25:25,649 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-07-12 10:25:25,649 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-07-12 10:25:25,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-07-12 10:25:25,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:25,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-07-12 10:25:25,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 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) [2022-07-12 10:25:25,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:25,655 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:25,655 INFO L186 Difference]: Start difference. First operand has 746 places, 547 transitions, 9698 flow. Second operand 30 states and 4814 transitions. [2022-07-12 10:25:25,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 742 places, 636 transitions, 12778 flow [2022-07-12 10:25:26,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 636 transitions, 12039 flow, removed 36 selfloop flow, removed 33 redundant places. [2022-07-12 10:25:26,110 INFO L242 Difference]: Finished difference. Result has 720 places, 548 transitions, 9508 flow [2022-07-12 10:25:26,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9084, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9508, PETRI_PLACES=720, PETRI_TRANSITIONS=548} [2022-07-12 10:25:26,110 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 533 predicate places. [2022-07-12 10:25:26,110 INFO L495 AbstractCegarLoop]: Abstraction has has 720 places, 548 transitions, 9508 flow [2022-07-12 10:25:26,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:26,111 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:26,111 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:26,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-07-12 10:25:26,111 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1156223170, now seen corresponding path program 47 times [2022-07-12 10:25:26,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:26,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994497331] [2022-07-12 10:25:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:26,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:26,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:26,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994497331] [2022-07-12 10:25:26,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994497331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:26,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:26,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:26,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37524556] [2022-07-12 10:25:26,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:26,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:26,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:26,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:26,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:26,215 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:26,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 548 transitions, 9508 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:26,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:26,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:26,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:27,519 INFO L129 PetriNetUnfolder]: 699/2686 cut-off events. [2022-07-12 10:25:27,520 INFO L130 PetriNetUnfolder]: For 65568/65624 co-relation queries the response was YES. [2022-07-12 10:25:27,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20088 conditions, 2686 events. 699/2686 cut-off events. For 65568/65624 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21542 event pairs, 330 based on Foata normal form. 16/2635 useless extension candidates. Maximal degree in co-relation 19802. Up to 926 conditions per place. [2022-07-12 10:25:27,588 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 137 changer transitions 64/624 dead transitions. [2022-07-12 10:25:27,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 734 places, 624 transitions, 12039 flow [2022-07-12 10:25:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:27,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-07-12 10:25:27,590 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-07-12 10:25:27,590 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-07-12 10:25:27,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-07-12 10:25:27,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:27,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-07-12 10:25:27,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 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) [2022-07-12 10:25:27,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:27,597 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:27,597 INFO L186 Difference]: Start difference. First operand has 720 places, 548 transitions, 9508 flow. Second operand 30 states and 4809 transitions. [2022-07-12 10:25:27,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 734 places, 624 transitions, 12039 flow [2022-07-12 10:25:28,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 624 transitions, 11644 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-07-12 10:25:28,047 INFO L242 Difference]: Finished difference. Result has 732 places, 535 transitions, 9110 flow [2022-07-12 10:25:28,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9155, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9110, PETRI_PLACES=732, PETRI_TRANSITIONS=535} [2022-07-12 10:25:28,048 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-07-12 10:25:28,048 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 535 transitions, 9110 flow [2022-07-12 10:25:28,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:28,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:28,049 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:28,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-07-12 10:25:28,049 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash 787999338, now seen corresponding path program 48 times [2022-07-12 10:25:28,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:28,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928008160] [2022-07-12 10:25:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:28,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:28,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928008160] [2022-07-12 10:25:28,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928008160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:28,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:28,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476020807] [2022-07-12 10:25:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:28,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:28,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:28,157 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:28,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 535 transitions, 9110 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:28,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:28,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:28,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:29,457 INFO L129 PetriNetUnfolder]: 690/2657 cut-off events. [2022-07-12 10:25:29,458 INFO L130 PetriNetUnfolder]: For 65558/65618 co-relation queries the response was YES. [2022-07-12 10:25:29,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19864 conditions, 2657 events. 690/2657 cut-off events. For 65558/65618 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21255 event pairs, 315 based on Foata normal form. 20/2609 useless extension candidates. Maximal degree in co-relation 19576. Up to 920 conditions per place. [2022-07-12 10:25:29,525 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 132 changer transitions 62/631 dead transitions. [2022-07-12 10:25:29,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 734 places, 631 transitions, 12261 flow [2022-07-12 10:25:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4818 transitions. [2022-07-12 10:25:29,529 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2022-07-12 10:25:29,529 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4818 transitions. [2022-07-12 10:25:29,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4818 transitions. [2022-07-12 10:25:29,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:29,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4818 transitions. [2022-07-12 10:25:29,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.6) internal successors, (4818), 30 states have internal predecessors, (4818), 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) [2022-07-12 10:25:29,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:29,536 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:29,536 INFO L186 Difference]: Start difference. First operand has 732 places, 535 transitions, 9110 flow. Second operand 30 states and 4818 transitions. [2022-07-12 10:25:29,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 734 places, 631 transitions, 12261 flow [2022-07-12 10:25:29,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 702 places, 631 transitions, 11662 flow, removed 42 selfloop flow, removed 32 redundant places. [2022-07-12 10:25:29,953 INFO L242 Difference]: Finished difference. Result has 716 places, 540 transitions, 9076 flow [2022-07-12 10:25:29,954 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8626, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9076, PETRI_PLACES=716, PETRI_TRANSITIONS=540} [2022-07-12 10:25:29,954 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 529 predicate places. [2022-07-12 10:25:29,954 INFO L495 AbstractCegarLoop]: Abstraction has has 716 places, 540 transitions, 9076 flow [2022-07-12 10:25:29,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:29,955 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:29,955 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:29,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-07-12 10:25:29,955 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash 952138132, now seen corresponding path program 49 times [2022-07-12 10:25:29,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:29,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078312586] [2022-07-12 10:25:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:29,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:30,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:30,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078312586] [2022-07-12 10:25:30,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078312586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:30,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:30,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:30,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299437606] [2022-07-12 10:25:30,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:30,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:30,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:30,088 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:30,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 716 places, 540 transitions, 9076 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:30,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:30,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:30,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:31,400 INFO L129 PetriNetUnfolder]: 697/2677 cut-off events. [2022-07-12 10:25:31,400 INFO L130 PetriNetUnfolder]: For 65563/65619 co-relation queries the response was YES. [2022-07-12 10:25:31,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19965 conditions, 2677 events. 697/2677 cut-off events. For 65563/65619 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21430 event pairs, 322 based on Foata normal form. 16/2626 useless extension candidates. Maximal degree in co-relation 19682. Up to 926 conditions per place. [2022-07-12 10:25:31,469 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 295 selfloop transitions, 137 changer transitions 61/642 dead transitions. [2022-07-12 10:25:31,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 642 transitions, 12456 flow [2022-07-12 10:25:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:25:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:25:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-07-12 10:25:31,471 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-07-12 10:25:31,471 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-07-12 10:25:31,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-07-12 10:25:31,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:31,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-07-12 10:25:31,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 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) [2022-07-12 10:25:31,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:31,478 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:31,478 INFO L186 Difference]: Start difference. First operand has 716 places, 540 transitions, 9076 flow. Second operand 29 states and 4664 transitions. [2022-07-12 10:25:31,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 642 transitions, 12456 flow [2022-07-12 10:25:31,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 642 transitions, 12127 flow, removed 94 selfloop flow, removed 14 redundant places. [2022-07-12 10:25:31,919 INFO L242 Difference]: Finished difference. Result has 729 places, 552 transitions, 9521 flow [2022-07-12 10:25:31,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8846, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9521, PETRI_PLACES=729, PETRI_TRANSITIONS=552} [2022-07-12 10:25:31,920 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 542 predicate places. [2022-07-12 10:25:31,920 INFO L495 AbstractCegarLoop]: Abstraction has has 729 places, 552 transitions, 9521 flow [2022-07-12 10:25:31,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:31,920 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:31,920 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:31,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-07-12 10:25:31,921 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:31,921 INFO L85 PathProgramCache]: Analyzing trace with hash -342525194, now seen corresponding path program 50 times [2022-07-12 10:25:31,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:31,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139572541] [2022-07-12 10:25:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:31,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:32,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:32,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139572541] [2022-07-12 10:25:32,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139572541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:32,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:32,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:32,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041066102] [2022-07-12 10:25:32,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:32,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:32,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:32,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:32,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:32,022 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:32,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 552 transitions, 9521 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:32,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:32,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:32,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:33,337 INFO L129 PetriNetUnfolder]: 698/2682 cut-off events. [2022-07-12 10:25:33,338 INFO L130 PetriNetUnfolder]: For 67023/67073 co-relation queries the response was YES. [2022-07-12 10:25:33,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20195 conditions, 2682 events. 698/2682 cut-off events. For 67023/67073 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21502 event pairs, 315 based on Foata normal form. 16/2630 useless extension candidates. Maximal degree in co-relation 19908. Up to 926 conditions per place. [2022-07-12 10:25:33,406 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 137 changer transitions 60/649 dead transitions. [2022-07-12 10:25:33,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 649 transitions, 12834 flow [2022-07-12 10:25:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:25:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:25:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-07-12 10:25:33,408 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-07-12 10:25:33,408 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-07-12 10:25:33,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-07-12 10:25:33,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:33,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-07-12 10:25:33,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 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) [2022-07-12 10:25:33,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:33,414 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:33,415 INFO L186 Difference]: Start difference. First operand has 729 places, 552 transitions, 9521 flow. Second operand 29 states and 4664 transitions. [2022-07-12 10:25:33,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 649 transitions, 12834 flow [2022-07-12 10:25:33,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 730 places, 649 transitions, 12541 flow, removed 61 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:33,880 INFO L242 Difference]: Finished difference. Result has 743 places, 563 transitions, 9994 flow [2022-07-12 10:25:33,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9303, PETRI_DIFFERENCE_MINUEND_PLACES=702, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9994, PETRI_PLACES=743, PETRI_TRANSITIONS=563} [2022-07-12 10:25:33,881 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 556 predicate places. [2022-07-12 10:25:33,881 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 563 transitions, 9994 flow [2022-07-12 10:25:33,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:33,881 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:33,881 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:33,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-07-12 10:25:33,881 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:33,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash -78170232, now seen corresponding path program 51 times [2022-07-12 10:25:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:33,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466616929] [2022-07-12 10:25:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:33,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:33,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466616929] [2022-07-12 10:25:33,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466616929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:33,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:33,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413433142] [2022-07-12 10:25:33,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:33,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:33,987 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:33,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 563 transitions, 9994 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:33,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:33,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:33,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:35,293 INFO L129 PetriNetUnfolder]: 681/2667 cut-off events. [2022-07-12 10:25:35,293 INFO L130 PetriNetUnfolder]: For 65438/65484 co-relation queries the response was YES. [2022-07-12 10:25:35,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19773 conditions, 2667 events. 681/2667 cut-off events. For 65438/65484 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21411 event pairs, 321 based on Foata normal form. 12/2613 useless extension candidates. Maximal degree in co-relation 19481. Up to 922 conditions per place. [2022-07-12 10:25:35,359 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 300 selfloop transitions, 118 changer transitions 66/633 dead transitions. [2022-07-12 10:25:35,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 633 transitions, 12378 flow [2022-07-12 10:25:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:35,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-07-12 10:25:35,361 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-07-12 10:25:35,361 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-07-12 10:25:35,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-07-12 10:25:35,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:35,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-07-12 10:25:35,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 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) [2022-07-12 10:25:35,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:35,368 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:35,368 INFO L186 Difference]: Start difference. First operand has 743 places, 563 transitions, 9994 flow. Second operand 30 states and 4815 transitions. [2022-07-12 10:25:35,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 633 transitions, 12378 flow [2022-07-12 10:25:35,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 633 transitions, 12012 flow, removed 69 selfloop flow, removed 14 redundant places. [2022-07-12 10:25:35,845 INFO L242 Difference]: Finished difference. Result has 753 places, 541 transitions, 9274 flow [2022-07-12 10:25:35,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9654, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9274, PETRI_PLACES=753, PETRI_TRANSITIONS=541} [2022-07-12 10:25:35,846 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 566 predicate places. [2022-07-12 10:25:35,846 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 541 transitions, 9274 flow [2022-07-12 10:25:35,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:35,846 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:35,846 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:35,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-07-12 10:25:35,846 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:35,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1649624902, now seen corresponding path program 52 times [2022-07-12 10:25:35,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:35,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481095649] [2022-07-12 10:25:35,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:35,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:35,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:35,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481095649] [2022-07-12 10:25:35,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481095649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:35,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:35,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:35,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295528399] [2022-07-12 10:25:35,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:35,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:35,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:35,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:35,960 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:35,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 541 transitions, 9274 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:35,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:35,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:35,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:37,210 INFO L129 PetriNetUnfolder]: 659/2578 cut-off events. [2022-07-12 10:25:37,210 INFO L130 PetriNetUnfolder]: For 62835/62891 co-relation queries the response was YES. [2022-07-12 10:25:37,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18953 conditions, 2578 events. 659/2578 cut-off events. For 62835/62891 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 20409 event pairs, 319 based on Foata normal form. 16/2530 useless extension candidates. Maximal degree in co-relation 18661. Up to 910 conditions per place. [2022-07-12 10:25:37,276 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 111 changer transitions 66/596 dead transitions. [2022-07-12 10:25:37,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 596 transitions, 11220 flow [2022-07-12 10:25:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:25:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:25:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4643 transitions. [2022-07-12 10:25:37,278 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7623973727422003 [2022-07-12 10:25:37,278 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4643 transitions. [2022-07-12 10:25:37,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4643 transitions. [2022-07-12 10:25:37,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:37,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4643 transitions. [2022-07-12 10:25:37,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.10344827586206) internal successors, (4643), 29 states have internal predecessors, (4643), 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) [2022-07-12 10:25:37,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:37,284 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:37,284 INFO L186 Difference]: Start difference. First operand has 753 places, 541 transitions, 9274 flow. Second operand 29 states and 4643 transitions. [2022-07-12 10:25:37,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 596 transitions, 11220 flow [2022-07-12 10:25:37,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 596 transitions, 10795 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-07-12 10:25:37,722 INFO L242 Difference]: Finished difference. Result has 732 places, 505 transitions, 8177 flow [2022-07-12 10:25:37,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8898, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8177, PETRI_PLACES=732, PETRI_TRANSITIONS=505} [2022-07-12 10:25:37,723 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-07-12 10:25:37,723 INFO L495 AbstractCegarLoop]: Abstraction has has 732 places, 505 transitions, 8177 flow [2022-07-12 10:25:37,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:37,723 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:37,723 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:37,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-07-12 10:25:37,724 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:37,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1947419316, now seen corresponding path program 53 times [2022-07-12 10:25:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:37,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14956829] [2022-07-12 10:25:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:37,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14956829] [2022-07-12 10:25:37,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14956829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:37,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:37,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:37,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324923938] [2022-07-12 10:25:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:37,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:37,836 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:37,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 505 transitions, 8177 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:37,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:37,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:37,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:39,063 INFO L129 PetriNetUnfolder]: 650/2559 cut-off events. [2022-07-12 10:25:39,063 INFO L130 PetriNetUnfolder]: For 60842/60902 co-relation queries the response was YES. [2022-07-12 10:25:39,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18580 conditions, 2559 events. 650/2559 cut-off events. For 60842/60902 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 20278 event pairs, 304 based on Foata normal form. 20/2516 useless extension candidates. Maximal degree in co-relation 18298. Up to 906 conditions per place. [2022-07-12 10:25:39,128 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 119 changer transitions 63/602 dead transitions. [2022-07-12 10:25:39,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 602 transitions, 11286 flow [2022-07-12 10:25:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:39,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-07-12 10:25:39,130 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-07-12 10:25:39,130 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-07-12 10:25:39,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-07-12 10:25:39,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:39,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-07-12 10:25:39,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 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) [2022-07-12 10:25:39,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:39,136 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:39,136 INFO L186 Difference]: Start difference. First operand has 732 places, 505 transitions, 8177 flow. Second operand 30 states and 4814 transitions. [2022-07-12 10:25:39,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 602 transitions, 11286 flow [2022-07-12 10:25:39,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 602 transitions, 10582 flow, removed 42 selfloop flow, removed 35 redundant places. [2022-07-12 10:25:39,527 INFO L242 Difference]: Finished difference. Result has 696 places, 510 transitions, 8035 flow [2022-07-12 10:25:39,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7609, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8035, PETRI_PLACES=696, PETRI_TRANSITIONS=510} [2022-07-12 10:25:39,528 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 509 predicate places. [2022-07-12 10:25:39,528 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 510 transitions, 8035 flow [2022-07-12 10:25:39,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:39,528 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:39,528 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:39,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-07-12 10:25:39,528 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:39,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:39,529 INFO L85 PathProgramCache]: Analyzing trace with hash 145093448, now seen corresponding path program 54 times [2022-07-12 10:25:39,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:39,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430144226] [2022-07-12 10:25:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:39,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:39,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430144226] [2022-07-12 10:25:39,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430144226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:39,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:39,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235713135] [2022-07-12 10:25:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:39,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:39,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:39,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:39,637 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:39,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 510 transitions, 8035 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:39,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:39,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:39,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:40,853 INFO L129 PetriNetUnfolder]: 644/2560 cut-off events. [2022-07-12 10:25:40,853 INFO L130 PetriNetUnfolder]: For 58496/58542 co-relation queries the response was YES. [2022-07-12 10:25:40,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18257 conditions, 2560 events. 644/2560 cut-off events. For 58496/58542 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 20327 event pairs, 311 based on Foata normal form. 12/2510 useless extension candidates. Maximal degree in co-relation 17982. Up to 904 conditions per place. [2022-07-12 10:25:40,915 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 110 changer transitions 61/606 dead transitions. [2022-07-12 10:25:40,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 606 transitions, 11146 flow [2022-07-12 10:25:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-07-12 10:25:40,917 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-07-12 10:25:40,917 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-07-12 10:25:40,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-07-12 10:25:40,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:40,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-07-12 10:25:40,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 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) [2022-07-12 10:25:40,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:40,924 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:40,924 INFO L186 Difference]: Start difference. First operand has 696 places, 510 transitions, 8035 flow. Second operand 30 states and 4820 transitions. [2022-07-12 10:25:40,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 606 transitions, 11146 flow [2022-07-12 10:25:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 606 transitions, 10830 flow, removed 107 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:41,304 INFO L242 Difference]: Finished difference. Result has 711 places, 515 transitions, 8226 flow [2022-07-12 10:25:41,305 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7820, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8226, PETRI_PLACES=711, PETRI_TRANSITIONS=515} [2022-07-12 10:25:41,305 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 524 predicate places. [2022-07-12 10:25:41,305 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 515 transitions, 8226 flow [2022-07-12 10:25:41,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:41,305 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:41,305 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:41,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-07-12 10:25:41,306 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1100214164, now seen corresponding path program 55 times [2022-07-12 10:25:41,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:41,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900041473] [2022-07-12 10:25:41,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:41,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:41,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:41,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900041473] [2022-07-12 10:25:41,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900041473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:41,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:41,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:41,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924214658] [2022-07-12 10:25:41,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:41,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:41,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:41,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:41,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:41,414 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:41,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 515 transitions, 8226 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:41,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:41,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:41,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:42,610 INFO L129 PetriNetUnfolder]: 650/2568 cut-off events. [2022-07-12 10:25:42,610 INFO L130 PetriNetUnfolder]: For 60491/60541 co-relation queries the response was YES. [2022-07-12 10:25:42,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18466 conditions, 2568 events. 650/2568 cut-off events. For 60491/60541 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20369 event pairs, 302 based on Foata normal form. 16/2522 useless extension candidates. Maximal degree in co-relation 18187. Up to 908 conditions per place. [2022-07-12 10:25:42,672 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 279 selfloop transitions, 128 changer transitions 61/617 dead transitions. [2022-07-12 10:25:42,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 617 transitions, 11585 flow [2022-07-12 10:25:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:25:42,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:25:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-07-12 10:25:42,674 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-07-12 10:25:42,674 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-07-12 10:25:42,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-07-12 10:25:42,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:42,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-07-12 10:25:42,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 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) [2022-07-12 10:25:42,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:42,680 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:42,680 INFO L186 Difference]: Start difference. First operand has 711 places, 515 transitions, 8226 flow. Second operand 29 states and 4660 transitions. [2022-07-12 10:25:42,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 617 transitions, 11585 flow [2022-07-12 10:25:43,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 617 transitions, 11255 flow, removed 87 selfloop flow, removed 15 redundant places. [2022-07-12 10:25:43,092 INFO L242 Difference]: Finished difference. Result has 723 places, 527 transitions, 8664 flow [2022-07-12 10:25:43,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7987, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8664, PETRI_PLACES=723, PETRI_TRANSITIONS=527} [2022-07-12 10:25:43,093 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 536 predicate places. [2022-07-12 10:25:43,093 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 527 transitions, 8664 flow [2022-07-12 10:25:43,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:43,093 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:43,093 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:43,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-07-12 10:25:43,093 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:43,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:43,093 INFO L85 PathProgramCache]: Analyzing trace with hash -110260844, now seen corresponding path program 56 times [2022-07-12 10:25:43,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:43,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767291415] [2022-07-12 10:25:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:43,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:43,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:43,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:43,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767291415] [2022-07-12 10:25:43,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767291415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:43,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:43,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:43,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291784982] [2022-07-12 10:25:43,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:43,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:43,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:43,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:43,196 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:43,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 527 transitions, 8664 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:43,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:43,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:43,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:44,440 INFO L129 PetriNetUnfolder]: 647/2581 cut-off events. [2022-07-12 10:25:44,440 INFO L130 PetriNetUnfolder]: For 61069/61115 co-relation queries the response was YES. [2022-07-12 10:25:44,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18630 conditions, 2581 events. 647/2581 cut-off events. For 61069/61115 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 20530 event pairs, 311 based on Foata normal form. 12/2531 useless extension candidates. Maximal degree in co-relation 18347. Up to 910 conditions per place. [2022-07-12 10:25:44,504 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 124 changer transitions 60/624 dead transitions. [2022-07-12 10:25:44,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 624 transitions, 11921 flow [2022-07-12 10:25:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:25:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:25:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-07-12 10:25:44,507 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-07-12 10:25:44,507 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-07-12 10:25:44,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-07-12 10:25:44,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:44,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-07-12 10:25:44,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 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) [2022-07-12 10:25:44,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:44,513 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:25:44,513 INFO L186 Difference]: Start difference. First operand has 723 places, 527 transitions, 8664 flow. Second operand 29 states and 4660 transitions. [2022-07-12 10:25:44,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 624 transitions, 11921 flow [2022-07-12 10:25:44,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 624 transitions, 11628 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:44,920 INFO L242 Difference]: Finished difference. Result has 737 places, 538 transitions, 9089 flow [2022-07-12 10:25:44,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8442, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9089, PETRI_PLACES=737, PETRI_TRANSITIONS=538} [2022-07-12 10:25:44,920 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 550 predicate places. [2022-07-12 10:25:44,920 INFO L495 AbstractCegarLoop]: Abstraction has has 737 places, 538 transitions, 9089 flow [2022-07-12 10:25:44,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:44,921 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:44,921 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:44,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-07-12 10:25:44,921 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash -207531796, now seen corresponding path program 57 times [2022-07-12 10:25:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:44,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077238489] [2022-07-12 10:25:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:45,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:45,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077238489] [2022-07-12 10:25:45,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077238489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:45,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:45,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:45,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160611330] [2022-07-12 10:25:45,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:45,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:45,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:45,039 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:45,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 538 transitions, 9089 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:45,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:45,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:45,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:46,384 INFO L129 PetriNetUnfolder]: 630/2544 cut-off events. [2022-07-12 10:25:46,385 INFO L130 PetriNetUnfolder]: For 58909/58955 co-relation queries the response was YES. [2022-07-12 10:25:46,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18158 conditions, 2544 events. 630/2544 cut-off events. For 58909/58955 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 20196 event pairs, 310 based on Foata normal form. 12/2494 useless extension candidates. Maximal degree in co-relation 17870. Up to 904 conditions per place. [2022-07-12 10:25:46,438 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 105 changer transitions 66/606 dead transitions. [2022-07-12 10:25:46,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 606 transitions, 11400 flow [2022-07-12 10:25:46,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4810 transitions. [2022-07-12 10:25:46,440 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-07-12 10:25:46,440 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4810 transitions. [2022-07-12 10:25:46,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4810 transitions. [2022-07-12 10:25:46,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:46,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4810 transitions. [2022-07-12 10:25:46,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.33333333333334) internal successors, (4810), 30 states have internal predecessors, (4810), 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) [2022-07-12 10:25:46,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:46,447 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:46,447 INFO L186 Difference]: Start difference. First operand has 737 places, 538 transitions, 9089 flow. Second operand 30 states and 4810 transitions. [2022-07-12 10:25:46,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 606 transitions, 11400 flow [2022-07-12 10:25:46,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 606 transitions, 11069 flow, removed 62 selfloop flow, removed 13 redundant places. [2022-07-12 10:25:46,851 INFO L242 Difference]: Finished difference. Result has 746 places, 514 transitions, 8315 flow [2022-07-12 10:25:46,852 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8786, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8315, PETRI_PLACES=746, PETRI_TRANSITIONS=514} [2022-07-12 10:25:46,852 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 559 predicate places. [2022-07-12 10:25:46,852 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 514 transitions, 8315 flow [2022-07-12 10:25:46,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:46,852 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:46,852 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:46,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-07-12 10:25:46,853 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:46,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash 505069874, now seen corresponding path program 58 times [2022-07-12 10:25:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:46,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673280876] [2022-07-12 10:25:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:46,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:46,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:46,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:46,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673280876] [2022-07-12 10:25:46,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673280876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:46,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:46,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:46,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922305587] [2022-07-12 10:25:46,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:46,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:46,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:46,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:46,967 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:46,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 514 transitions, 8315 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:46,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:46,968 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:46,968 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:48,177 INFO L129 PetriNetUnfolder]: 612/2460 cut-off events. [2022-07-12 10:25:48,177 INFO L130 PetriNetUnfolder]: For 56542/56598 co-relation queries the response was YES. [2022-07-12 10:25:48,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17427 conditions, 2460 events. 612/2460 cut-off events. For 56542/56598 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 19248 event pairs, 307 based on Foata normal form. 16/2414 useless extension candidates. Maximal degree in co-relation 17140. Up to 894 conditions per place. [2022-07-12 10:25:48,237 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 277 selfloop transitions, 88 changer transitions 63/577 dead transitions. [2022-07-12 10:25:48,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 577 transitions, 10457 flow [2022-07-12 10:25:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-07-12 10:25:48,240 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-07-12 10:25:48,240 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-07-12 10:25:48,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-07-12 10:25:48,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:48,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-07-12 10:25:48,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 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) [2022-07-12 10:25:48,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:48,246 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:48,246 INFO L186 Difference]: Start difference. First operand has 746 places, 514 transitions, 8315 flow. Second operand 30 states and 4806 transitions. [2022-07-12 10:25:48,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 577 transitions, 10457 flow [2022-07-12 10:25:48,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 577 transitions, 9852 flow, removed 37 selfloop flow, removed 39 redundant places. [2022-07-12 10:25:48,623 INFO L242 Difference]: Finished difference. Result has 719 places, 489 transitions, 7375 flow [2022-07-12 10:25:48,624 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7781, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7375, PETRI_PLACES=719, PETRI_TRANSITIONS=489} [2022-07-12 10:25:48,624 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 532 predicate places. [2022-07-12 10:25:48,624 INFO L495 AbstractCegarLoop]: Abstraction has has 719 places, 489 transitions, 7375 flow [2022-07-12 10:25:48,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:48,625 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:48,625 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:48,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-07-12 10:25:48,625 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1862347804, now seen corresponding path program 59 times [2022-07-12 10:25:48,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:48,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556579097] [2022-07-12 10:25:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:48,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:48,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:48,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556579097] [2022-07-12 10:25:48,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556579097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:48,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:48,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:48,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509999190] [2022-07-12 10:25:48,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:48,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:48,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:48,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:48,741 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:48,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 489 transitions, 7375 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:48,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:48,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:48,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:49,844 INFO L129 PetriNetUnfolder]: 587/2371 cut-off events. [2022-07-12 10:25:49,844 INFO L130 PetriNetUnfolder]: For 51320/51366 co-relation queries the response was YES. [2022-07-12 10:25:49,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16299 conditions, 2371 events. 587/2371 cut-off events. For 51320/51366 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 18252 event pairs, 304 based on Foata normal form. 12/2322 useless extension candidates. Maximal degree in co-relation 16025. Up to 880 conditions per place. [2022-07-12 10:25:49,900 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 62 changer transitions 65/535 dead transitions. [2022-07-12 10:25:49,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 535 transitions, 8987 flow [2022-07-12 10:25:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:25:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:25:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4480 transitions. [2022-07-12 10:25:49,902 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-07-12 10:25:49,902 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4480 transitions. [2022-07-12 10:25:49,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4480 transitions. [2022-07-12 10:25:49,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:49,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4480 transitions. [2022-07-12 10:25:49,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.0) internal successors, (4480), 28 states have internal predecessors, (4480), 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) [2022-07-12 10:25:49,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:25:49,909 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:25:49,909 INFO L186 Difference]: Start difference. First operand has 719 places, 489 transitions, 7375 flow. Second operand 28 states and 4480 transitions. [2022-07-12 10:25:49,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 535 transitions, 8987 flow [2022-07-12 10:25:50,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 535 transitions, 8541 flow, removed 31 selfloop flow, removed 33 redundant places. [2022-07-12 10:25:50,224 INFO L242 Difference]: Finished difference. Result has 687 places, 445 transitions, 6116 flow [2022-07-12 10:25:50,224 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6971, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6116, PETRI_PLACES=687, PETRI_TRANSITIONS=445} [2022-07-12 10:25:50,225 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 500 predicate places. [2022-07-12 10:25:50,225 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 445 transitions, 6116 flow [2022-07-12 10:25:50,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:50,225 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:50,225 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:50,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-07-12 10:25:50,225 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:50,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:50,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1431857094, now seen corresponding path program 60 times [2022-07-12 10:25:50,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:50,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026292370] [2022-07-12 10:25:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:50,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:50,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026292370] [2022-07-12 10:25:50,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026292370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:50,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:50,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:50,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089954204] [2022-07-12 10:25:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:50,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:50,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:50,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:50,344 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:50,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 445 transitions, 6116 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:50,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:50,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:50,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:51,382 INFO L129 PetriNetUnfolder]: 564/2282 cut-off events. [2022-07-12 10:25:51,382 INFO L130 PetriNetUnfolder]: For 46891/46951 co-relation queries the response was YES. [2022-07-12 10:25:51,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15388 conditions, 2282 events. 564/2282 cut-off events. For 46891/46951 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 17402 event pairs, 293 based on Foata normal form. 20/2242 useless extension candidates. Maximal degree in co-relation 15127. Up to 866 conditions per place. [2022-07-12 10:25:51,435 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 223 selfloop transitions, 61 changer transitions 65/498 dead transitions. [2022-07-12 10:25:51,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 498 transitions, 7799 flow [2022-07-12 10:25:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 10:25:51,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-12 10:25:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4329 transitions. [2022-07-12 10:25:51,437 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-07-12 10:25:51,437 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4329 transitions. [2022-07-12 10:25:51,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4329 transitions. [2022-07-12 10:25:51,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:51,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4329 transitions. [2022-07-12 10:25:51,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.33333333333334) internal successors, (4329), 27 states have internal predecessors, (4329), 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) [2022-07-12 10:25:51,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 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) [2022-07-12 10:25:51,443 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 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) [2022-07-12 10:25:51,443 INFO L186 Difference]: Start difference. First operand has 687 places, 445 transitions, 6116 flow. Second operand 27 states and 4329 transitions. [2022-07-12 10:25:51,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 498 transitions, 7799 flow [2022-07-12 10:25:51,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 498 transitions, 7375 flow, removed 31 selfloop flow, removed 29 redundant places. [2022-07-12 10:25:51,709 INFO L242 Difference]: Finished difference. Result has 638 places, 408 transitions, 5076 flow [2022-07-12 10:25:51,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5754, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5076, PETRI_PLACES=638, PETRI_TRANSITIONS=408} [2022-07-12 10:25:51,709 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 451 predicate places. [2022-07-12 10:25:51,709 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 408 transitions, 5076 flow [2022-07-12 10:25:51,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:51,710 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:51,710 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:51,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-07-12 10:25:51,710 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:51,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2140134238, now seen corresponding path program 61 times [2022-07-12 10:25:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:51,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030316575] [2022-07-12 10:25:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:51,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:51,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030316575] [2022-07-12 10:25:51,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030316575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:51,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:51,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512258584] [2022-07-12 10:25:51,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:51,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:51,817 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:51,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 408 transitions, 5076 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:51,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:51,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:51,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:52,807 INFO L129 PetriNetUnfolder]: 548/2224 cut-off events. [2022-07-12 10:25:52,807 INFO L130 PetriNetUnfolder]: For 43054/43100 co-relation queries the response was YES. [2022-07-12 10:25:52,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14685 conditions, 2224 events. 548/2224 cut-off events. For 43054/43100 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16719 event pairs, 299 based on Foata normal form. 12/2176 useless extension candidates. Maximal degree in co-relation 14433. Up to 856 conditions per place. [2022-07-12 10:25:52,855 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 204 selfloop transitions, 55 changer transitions 64/472 dead transitions. [2022-07-12 10:25:52,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 472 transitions, 6915 flow [2022-07-12 10:25:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:25:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:25:52,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4484 transitions. [2022-07-12 10:25:52,857 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-07-12 10:25:52,858 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4484 transitions. [2022-07-12 10:25:52,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4484 transitions. [2022-07-12 10:25:52,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:52,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4484 transitions. [2022-07-12 10:25:52,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.14285714285714) internal successors, (4484), 28 states have internal predecessors, (4484), 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) [2022-07-12 10:25:52,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:25:52,864 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:25:52,864 INFO L186 Difference]: Start difference. First operand has 638 places, 408 transitions, 5076 flow. Second operand 28 states and 4484 transitions. [2022-07-12 10:25:52,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 472 transitions, 6915 flow [2022-07-12 10:25:53,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 472 transitions, 6405 flow, removed 31 selfloop flow, removed 35 redundant places. [2022-07-12 10:25:53,096 INFO L242 Difference]: Finished difference. Result has 598 places, 383 transitions, 4280 flow [2022-07-12 10:25:53,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4678, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4280, PETRI_PLACES=598, PETRI_TRANSITIONS=383} [2022-07-12 10:25:53,096 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 411 predicate places. [2022-07-12 10:25:53,096 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 383 transitions, 4280 flow [2022-07-12 10:25:53,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:53,097 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:53,097 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:53,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-07-12 10:25:53,097 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash -750577990, now seen corresponding path program 62 times [2022-07-12 10:25:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:53,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490165836] [2022-07-12 10:25:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:53,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:53,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:53,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490165836] [2022-07-12 10:25:53,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490165836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:53,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:53,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:53,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088199406] [2022-07-12 10:25:53,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:53,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:53,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:53,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:53,201 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:53,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 383 transitions, 4280 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:53,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:53,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:53,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:54,162 INFO L129 PetriNetUnfolder]: 520/2093 cut-off events. [2022-07-12 10:25:54,162 INFO L130 PetriNetUnfolder]: For 37776/37836 co-relation queries the response was YES. [2022-07-12 10:25:54,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13512 conditions, 2093 events. 520/2093 cut-off events. For 37776/37836 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 15293 event pairs, 286 based on Foata normal form. 20/2055 useless extension candidates. Maximal degree in co-relation 13269. Up to 838 conditions per place. [2022-07-12 10:25:54,206 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 177 selfloop transitions, 28 changer transitions 68/422 dead transitions. [2022-07-12 10:25:54,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 422 transitions, 5445 flow [2022-07-12 10:25:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:25:54,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:25:54,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4775 transitions. [2022-07-12 10:25:54,209 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2022-07-12 10:25:54,209 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4775 transitions. [2022-07-12 10:25:54,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4775 transitions. [2022-07-12 10:25:54,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:54,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4775 transitions. [2022-07-12 10:25:54,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.16666666666666) internal successors, (4775), 30 states have internal predecessors, (4775), 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) [2022-07-12 10:25:54,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:54,215 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:25:54,215 INFO L186 Difference]: Start difference. First operand has 598 places, 383 transitions, 4280 flow. Second operand 30 states and 4775 transitions. [2022-07-12 10:25:54,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 422 transitions, 5445 flow [2022-07-12 10:25:54,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 422 transitions, 5147 flow, removed 27 selfloop flow, removed 32 redundant places. [2022-07-12 10:25:54,417 INFO L242 Difference]: Finished difference. Result has 567 places, 330 transitions, 3101 flow [2022-07-12 10:25:54,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4008, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3101, PETRI_PLACES=567, PETRI_TRANSITIONS=330} [2022-07-12 10:25:54,418 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 380 predicate places. [2022-07-12 10:25:54,418 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 330 transitions, 3101 flow [2022-07-12 10:25:54,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:54,418 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:54,418 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:54,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-07-12 10:25:54,418 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:54,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1515138178, now seen corresponding path program 63 times [2022-07-12 10:25:54,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:54,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576798500] [2022-07-12 10:25:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:54,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:54,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:54,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576798500] [2022-07-12 10:25:54,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576798500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:54,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:54,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:54,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280288450] [2022-07-12 10:25:54,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:54,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:54,522 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:54,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 330 transitions, 3101 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:54,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:54,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:54,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:55,766 INFO L129 PetriNetUnfolder]: 557/2224 cut-off events. [2022-07-12 10:25:55,766 INFO L130 PetriNetUnfolder]: For 40461/40506 co-relation queries the response was YES. [2022-07-12 10:25:55,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14408 conditions, 2224 events. 557/2224 cut-off events. For 40461/40506 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16654 event pairs, 304 based on Foata normal form. 13/2177 useless extension candidates. Maximal degree in co-relation 14177. Up to 839 conditions per place. [2022-07-12 10:25:55,811 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 203 selfloop transitions, 50 changer transitions 74/476 dead transitions. [2022-07-12 10:25:55,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 476 transitions, 6617 flow [2022-07-12 10:25:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-12 10:25:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-12 10:25:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-07-12 10:25:55,814 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-07-12 10:25:55,814 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-07-12 10:25:55,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-07-12 10:25:55,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:55,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-07-12 10:25:55,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 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) [2022-07-12 10:25:55,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:25:55,824 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:25:55,824 INFO L186 Difference]: Start difference. First operand has 567 places, 330 transitions, 3101 flow. Second operand 46 states and 7335 transitions. [2022-07-12 10:25:55,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 476 transitions, 6617 flow [2022-07-12 10:25:56,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 476 transitions, 6048 flow, removed 91 selfloop flow, removed 34 redundant places. [2022-07-12 10:25:56,008 INFO L242 Difference]: Finished difference. Result has 541 places, 350 transitions, 3471 flow [2022-07-12 10:25:56,008 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3471, PETRI_PLACES=541, PETRI_TRANSITIONS=350} [2022-07-12 10:25:56,008 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 354 predicate places. [2022-07-12 10:25:56,009 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 350 transitions, 3471 flow [2022-07-12 10:25:56,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:56,009 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:56,009 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:56,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-07-12 10:25:56,009 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:56,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:56,010 INFO L85 PathProgramCache]: Analyzing trace with hash -561155850, now seen corresponding path program 64 times [2022-07-12 10:25:56,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:56,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760712129] [2022-07-12 10:25:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:56,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:56,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:56,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760712129] [2022-07-12 10:25:56,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760712129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:56,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:56,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997482173] [2022-07-12 10:25:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:56,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:56,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:56,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 350 transitions, 3471 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:56,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:56,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:56,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:57,383 INFO L129 PetriNetUnfolder]: 599/2330 cut-off events. [2022-07-12 10:25:57,383 INFO L130 PetriNetUnfolder]: For 46219/46270 co-relation queries the response was YES. [2022-07-12 10:25:57,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15703 conditions, 2330 events. 599/2330 cut-off events. For 46219/46270 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 17648 event pairs, 339 based on Foata normal form. 13/2283 useless extension candidates. Maximal degree in co-relation 15466. Up to 838 conditions per place. [2022-07-12 10:25:57,432 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 63 changer transitions 74/493 dead transitions. [2022-07-12 10:25:57,432 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 493 transitions, 7228 flow [2022-07-12 10:25:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 10:25:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-12 10:25:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2022-07-12 10:25:57,435 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2022-07-12 10:25:57,435 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2022-07-12 10:25:57,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2022-07-12 10:25:57,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:57,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2022-07-12 10:25:57,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 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) [2022-07-12 10:25:57,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 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) [2022-07-12 10:25:57,444 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 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) [2022-07-12 10:25:57,444 INFO L186 Difference]: Start difference. First operand has 541 places, 350 transitions, 3471 flow. Second operand 43 states and 6865 transitions. [2022-07-12 10:25:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 493 transitions, 7228 flow [2022-07-12 10:25:57,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 493 transitions, 6497 flow, removed 354 selfloop flow, removed 25 redundant places. [2022-07-12 10:25:57,637 INFO L242 Difference]: Finished difference. Result has 561 places, 371 transitions, 3943 flow [2022-07-12 10:25:57,638 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3943, PETRI_PLACES=561, PETRI_TRANSITIONS=371} [2022-07-12 10:25:57,638 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 374 predicate places. [2022-07-12 10:25:57,638 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 371 transitions, 3943 flow [2022-07-12 10:25:57,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:57,639 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:57,639 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-07-12 10:25:57,639 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1744965522, now seen corresponding path program 65 times [2022-07-12 10:25:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:57,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427619238] [2022-07-12 10:25:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:57,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:57,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:57,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427619238] [2022-07-12 10:25:57,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427619238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:57,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:57,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:57,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912460484] [2022-07-12 10:25:57,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:57,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:57,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:57,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:57,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:57,754 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:57,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 371 transitions, 3943 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:57,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:57,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:57,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:25:59,001 INFO L129 PetriNetUnfolder]: 633/2407 cut-off events. [2022-07-12 10:25:59,001 INFO L130 PetriNetUnfolder]: For 54194/54258 co-relation queries the response was YES. [2022-07-12 10:25:59,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17065 conditions, 2407 events. 633/2407 cut-off events. For 54194/54258 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 18446 event pairs, 319 based on Foata normal form. 17/2360 useless extension candidates. Maximal degree in co-relation 16816. Up to 838 conditions per place. [2022-07-12 10:25:59,052 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 222 selfloop transitions, 70 changer transitions 74/515 dead transitions. [2022-07-12 10:25:59,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 515 transitions, 8018 flow [2022-07-12 10:25:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-12 10:25:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-12 10:25:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7181 transitions. [2022-07-12 10:25:59,055 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7598941798941798 [2022-07-12 10:25:59,055 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7181 transitions. [2022-07-12 10:25:59,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7181 transitions. [2022-07-12 10:25:59,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:25:59,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7181 transitions. [2022-07-12 10:25:59,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.57777777777778) internal successors, (7181), 45 states have internal predecessors, (7181), 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) [2022-07-12 10:25:59,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 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) [2022-07-12 10:25:59,064 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 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) [2022-07-12 10:25:59,065 INFO L186 Difference]: Start difference. First operand has 561 places, 371 transitions, 3943 flow. Second operand 45 states and 7181 transitions. [2022-07-12 10:25:59,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 515 transitions, 8018 flow [2022-07-12 10:25:59,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 515 transitions, 7439 flow, removed 256 selfloop flow, removed 23 redundant places. [2022-07-12 10:25:59,299 INFO L242 Difference]: Finished difference. Result has 587 places, 390 transitions, 4485 flow [2022-07-12 10:25:59,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4485, PETRI_PLACES=587, PETRI_TRANSITIONS=390} [2022-07-12 10:25:59,299 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 400 predicate places. [2022-07-12 10:25:59,299 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 390 transitions, 4485 flow [2022-07-12 10:25:59,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:59,300 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:25:59,300 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:25:59,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-07-12 10:25:59,300 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:25:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:25:59,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1876051868, now seen corresponding path program 66 times [2022-07-12 10:25:59,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:25:59,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537359315] [2022-07-12 10:25:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:25:59,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:25:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:25:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:25:59,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:25:59,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537359315] [2022-07-12 10:25:59,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537359315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:25:59,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:25:59,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:25:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578265863] [2022-07-12 10:25:59,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:25:59,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:25:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:25:59,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:25:59,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:25:59,400 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:25:59,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 390 transitions, 4485 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:25:59,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:25:59,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:25:59,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:00,690 INFO L129 PetriNetUnfolder]: 628/2419 cut-off events. [2022-07-12 10:26:00,690 INFO L130 PetriNetUnfolder]: For 56443/56494 co-relation queries the response was YES. [2022-07-12 10:26:00,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17291 conditions, 2419 events. 628/2419 cut-off events. For 56443/56494 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 18564 event pairs, 347 based on Foata normal form. 14/2371 useless extension candidates. Maximal degree in co-relation 17028. Up to 838 conditions per place. [2022-07-12 10:26:00,747 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 226 selfloop transitions, 73 changer transitions 76/524 dead transitions. [2022-07-12 10:26:00,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 524 transitions, 8587 flow [2022-07-12 10:26:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:26:00,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-12 10:26:00,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-07-12 10:26:00,750 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7603896103896104 [2022-07-12 10:26:00,750 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-07-12 10:26:00,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-07-12 10:26:00,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:00,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-07-12 10:26:00,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 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) [2022-07-12 10:26:00,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 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) [2022-07-12 10:26:00,760 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 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) [2022-07-12 10:26:00,760 INFO L186 Difference]: Start difference. First operand has 587 places, 390 transitions, 4485 flow. Second operand 44 states and 7026 transitions. [2022-07-12 10:26:00,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 524 transitions, 8587 flow [2022-07-12 10:26:01,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 524 transitions, 7940 flow, removed 312 selfloop flow, removed 32 redundant places. [2022-07-12 10:26:01,027 INFO L242 Difference]: Finished difference. Result has 601 places, 399 transitions, 4870 flow [2022-07-12 10:26:01,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4870, PETRI_PLACES=601, PETRI_TRANSITIONS=399} [2022-07-12 10:26:01,028 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 414 predicate places. [2022-07-12 10:26:01,028 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 399 transitions, 4870 flow [2022-07-12 10:26:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:01,028 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:01,028 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:01,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-07-12 10:26:01,028 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:01,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1064240502, now seen corresponding path program 67 times [2022-07-12 10:26:01,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:01,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409565481] [2022-07-12 10:26:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:01,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:01,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409565481] [2022-07-12 10:26:01,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409565481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:01,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:01,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640308607] [2022-07-12 10:26:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:01,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:01,128 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:01,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 399 transitions, 4870 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:01,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:01,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:01,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:02,329 INFO L129 PetriNetUnfolder]: 621/2373 cut-off events. [2022-07-12 10:26:02,329 INFO L130 PetriNetUnfolder]: For 55673/55724 co-relation queries the response was YES. [2022-07-12 10:26:02,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17007 conditions, 2373 events. 621/2373 cut-off events. For 55673/55724 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 18064 event pairs, 315 based on Foata normal form. 14/2324 useless extension candidates. Maximal degree in co-relation 16740. Up to 838 conditions per place. [2022-07-12 10:26:02,383 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 220 selfloop transitions, 78 changer transitions 66/513 dead transitions. [2022-07-12 10:26:02,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 513 transitions, 8375 flow [2022-07-12 10:26:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:26:02,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:26:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-07-12 10:26:02,386 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-07-12 10:26:02,386 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-07-12 10:26:02,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-07-12 10:26:02,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:02,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-07-12 10:26:02,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 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) [2022-07-12 10:26:02,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:02,395 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:02,395 INFO L186 Difference]: Start difference. First operand has 601 places, 399 transitions, 4870 flow. Second operand 38 states and 6075 transitions. [2022-07-12 10:26:02,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 513 transitions, 8375 flow [2022-07-12 10:26:02,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 513 transitions, 7713 flow, removed 279 selfloop flow, removed 29 redundant places. [2022-07-12 10:26:02,661 INFO L242 Difference]: Finished difference. Result has 599 places, 412 transitions, 5226 flow [2022-07-12 10:26:02,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5226, PETRI_PLACES=599, PETRI_TRANSITIONS=412} [2022-07-12 10:26:02,662 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 412 predicate places. [2022-07-12 10:26:02,662 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 412 transitions, 5226 flow [2022-07-12 10:26:02,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:02,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:02,662 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:02,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-07-12 10:26:02,662 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1124453936, now seen corresponding path program 68 times [2022-07-12 10:26:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:02,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402715296] [2022-07-12 10:26:02,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:02,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:02,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:02,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402715296] [2022-07-12 10:26:02,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402715296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:02,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:02,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449760388] [2022-07-12 10:26:02,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:02,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:02,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:02,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:02,768 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:02,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 412 transitions, 5226 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:02,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:02,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:02,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:03,963 INFO L129 PetriNetUnfolder]: 649/2478 cut-off events. [2022-07-12 10:26:03,963 INFO L130 PetriNetUnfolder]: For 58276/58315 co-relation queries the response was YES. [2022-07-12 10:26:04,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18020 conditions, 2478 events. 649/2478 cut-off events. For 58276/58315 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19068 event pairs, 341 based on Foata normal form. 11/2428 useless extension candidates. Maximal degree in co-relation 17760. Up to 838 conditions per place. [2022-07-12 10:26:04,020 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 228 selfloop transitions, 98 changer transitions 67/542 dead transitions. [2022-07-12 10:26:04,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 542 transitions, 9108 flow [2022-07-12 10:26:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2022-07-12 10:26:04,027 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-07-12 10:26:04,027 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2022-07-12 10:26:04,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2022-07-12 10:26:04,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:04,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2022-07-12 10:26:04,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 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) [2022-07-12 10:26:04,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 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) [2022-07-12 10:26:04,036 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 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) [2022-07-12 10:26:04,036 INFO L186 Difference]: Start difference. First operand has 599 places, 412 transitions, 5226 flow. Second operand 35 states and 5605 transitions. [2022-07-12 10:26:04,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 542 transitions, 9108 flow [2022-07-12 10:26:04,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 542 transitions, 8285 flow, removed 358 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:04,337 INFO L242 Difference]: Finished difference. Result has 615 places, 431 transitions, 5577 flow [2022-07-12 10:26:04,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4842, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5577, PETRI_PLACES=615, PETRI_TRANSITIONS=431} [2022-07-12 10:26:04,338 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 428 predicate places. [2022-07-12 10:26:04,338 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 431 transitions, 5577 flow [2022-07-12 10:26:04,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:04,339 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:04,339 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:04,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-07-12 10:26:04,339 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:04,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash -575901748, now seen corresponding path program 69 times [2022-07-12 10:26:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:04,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639175850] [2022-07-12 10:26:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:04,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:04,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639175850] [2022-07-12 10:26:04,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639175850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:04,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:04,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065651101] [2022-07-12 10:26:04,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:04,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:04,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:04,454 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:04,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 431 transitions, 5577 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:04,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:04,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:04,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:05,793 INFO L129 PetriNetUnfolder]: 668/2496 cut-off events. [2022-07-12 10:26:05,793 INFO L130 PetriNetUnfolder]: For 59158/59226 co-relation queries the response was YES. [2022-07-12 10:26:05,841 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18309 conditions, 2496 events. 668/2496 cut-off events. For 59158/59226 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 19259 event pairs, 346 based on Foata normal form. 16/2451 useless extension candidates. Maximal degree in co-relation 18040. Up to 838 conditions per place. [2022-07-12 10:26:05,851 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 252 selfloop transitions, 89 changer transitions 65/555 dead transitions. [2022-07-12 10:26:05,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 555 transitions, 9318 flow [2022-07-12 10:26:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:26:05,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:26:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-07-12 10:26:05,854 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-07-12 10:26:05,854 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-07-12 10:26:05,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-07-12 10:26:05,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:05,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-07-12 10:26:05,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 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) [2022-07-12 10:26:05,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:05,862 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:05,862 INFO L186 Difference]: Start difference. First operand has 615 places, 431 transitions, 5577 flow. Second operand 38 states and 6083 transitions. [2022-07-12 10:26:05,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 555 transitions, 9318 flow [2022-07-12 10:26:06,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 555 transitions, 8875 flow, removed 125 selfloop flow, removed 19 redundant places. [2022-07-12 10:26:06,166 INFO L242 Difference]: Finished difference. Result has 637 places, 446 transitions, 5974 flow [2022-07-12 10:26:06,166 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5327, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5974, PETRI_PLACES=637, PETRI_TRANSITIONS=446} [2022-07-12 10:26:06,166 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 450 predicate places. [2022-07-12 10:26:06,166 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 446 transitions, 5974 flow [2022-07-12 10:26:06,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:06,167 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:06,167 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:06,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-07-12 10:26:06,167 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1037904126, now seen corresponding path program 70 times [2022-07-12 10:26:06,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:06,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761192805] [2022-07-12 10:26:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:06,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:06,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:06,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761192805] [2022-07-12 10:26:06,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761192805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:06,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:06,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:06,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417425715] [2022-07-12 10:26:06,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:06,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:06,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:06,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:06,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:06,274 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:06,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 446 transitions, 5974 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:06,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:06,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:06,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:07,592 INFO L129 PetriNetUnfolder]: 708/2626 cut-off events. [2022-07-12 10:26:07,593 INFO L130 PetriNetUnfolder]: For 70313/70373 co-relation queries the response was YES. [2022-07-12 10:26:07,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20074 conditions, 2626 events. 708/2626 cut-off events. For 70313/70373 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 20594 event pairs, 361 based on Foata normal form. 14/2577 useless extension candidates. Maximal degree in co-relation 19795. Up to 838 conditions per place. [2022-07-12 10:26:07,656 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 255 selfloop transitions, 101 changer transitions 64/569 dead transitions. [2022-07-12 10:26:07,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 569 transitions, 9888 flow [2022-07-12 10:26:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:26:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:26:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-07-12 10:26:07,659 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-07-12 10:26:07,659 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-07-12 10:26:07,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-07-12 10:26:07,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:07,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-07-12 10:26:07,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 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) [2022-07-12 10:26:07,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:07,667 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:07,667 INFO L186 Difference]: Start difference. First operand has 637 places, 446 transitions, 5974 flow. Second operand 37 states and 5925 transitions. [2022-07-12 10:26:07,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 569 transitions, 9888 flow [2022-07-12 10:26:08,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 569 transitions, 9422 flow, removed 179 selfloop flow, removed 22 redundant places. [2022-07-12 10:26:08,033 INFO L242 Difference]: Finished difference. Result has 653 places, 466 transitions, 6604 flow [2022-07-12 10:26:08,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5766, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6604, PETRI_PLACES=653, PETRI_TRANSITIONS=466} [2022-07-12 10:26:08,033 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 466 predicate places. [2022-07-12 10:26:08,033 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 466 transitions, 6604 flow [2022-07-12 10:26:08,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:08,034 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:08,034 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-07-12 10:26:08,034 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:08,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1427437878, now seen corresponding path program 71 times [2022-07-12 10:26:08,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:08,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490667449] [2022-07-12 10:26:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:08,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:08,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490667449] [2022-07-12 10:26:08,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490667449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:08,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:08,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582838390] [2022-07-12 10:26:08,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:08,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:08,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:08,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:08,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 466 transitions, 6604 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:08,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:08,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:08,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:09,502 INFO L129 PetriNetUnfolder]: 726/2662 cut-off events. [2022-07-12 10:26:09,502 INFO L130 PetriNetUnfolder]: For 78494/78562 co-relation queries the response was YES. [2022-07-12 10:26:09,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20891 conditions, 2662 events. 726/2662 cut-off events. For 78494/78562 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 21046 event pairs, 340 based on Foata normal form. 16/2612 useless extension candidates. Maximal degree in co-relation 20605. Up to 838 conditions per place. [2022-07-12 10:26:09,568 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 266 selfloop transitions, 106 changer transitions 66/587 dead transitions. [2022-07-12 10:26:09,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 587 transitions, 10636 flow [2022-07-12 10:26:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:26:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:26:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5921 transitions. [2022-07-12 10:26:09,662 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762033462033462 [2022-07-12 10:26:09,662 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5921 transitions. [2022-07-12 10:26:09,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5921 transitions. [2022-07-12 10:26:09,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:09,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5921 transitions. [2022-07-12 10:26:09,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.02702702702703) internal successors, (5921), 37 states have internal predecessors, (5921), 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) [2022-07-12 10:26:09,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:09,670 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:09,670 INFO L186 Difference]: Start difference. First operand has 653 places, 466 transitions, 6604 flow. Second operand 37 states and 5921 transitions. [2022-07-12 10:26:09,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 587 transitions, 10636 flow [2022-07-12 10:26:10,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 587 transitions, 10153 flow, removed 182 selfloop flow, removed 21 redundant places. [2022-07-12 10:26:10,070 INFO L242 Difference]: Finished difference. Result has 670 places, 485 transitions, 7206 flow [2022-07-12 10:26:10,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6361, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7206, PETRI_PLACES=670, PETRI_TRANSITIONS=485} [2022-07-12 10:26:10,070 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 483 predicate places. [2022-07-12 10:26:10,070 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 485 transitions, 7206 flow [2022-07-12 10:26:10,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:10,071 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:10,071 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-07-12 10:26:10,071 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:10,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash -189568654, now seen corresponding path program 72 times [2022-07-12 10:26:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:10,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373828448] [2022-07-12 10:26:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:10,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:10,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:10,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373828448] [2022-07-12 10:26:10,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373828448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:10,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:10,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:10,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504424034] [2022-07-12 10:26:10,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:10,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:10,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:10,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:10,170 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:10,171 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 485 transitions, 7206 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:10,171 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:10,171 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:10,171 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:11,541 INFO L129 PetriNetUnfolder]: 755/2751 cut-off events. [2022-07-12 10:26:11,541 INFO L130 PetriNetUnfolder]: For 88350/88418 co-relation queries the response was YES. [2022-07-12 10:26:11,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22330 conditions, 2751 events. 755/2751 cut-off events. For 88350/88418 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21827 event pairs, 382 based on Foata normal form. 16/2706 useless extension candidates. Maximal degree in co-relation 22037. Up to 838 conditions per place. [2022-07-12 10:26:11,613 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 122 changer transitions 67/612 dead transitions. [2022-07-12 10:26:11,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 612 transitions, 11599 flow [2022-07-12 10:26:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:26:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 10:26:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5766 transitions. [2022-07-12 10:26:11,616 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-07-12 10:26:11,616 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5766 transitions. [2022-07-12 10:26:11,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5766 transitions. [2022-07-12 10:26:11,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:11,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5766 transitions. [2022-07-12 10:26:11,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.16666666666666) internal successors, (5766), 36 states have internal predecessors, (5766), 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) [2022-07-12 10:26:11,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:26:11,624 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:26:11,624 INFO L186 Difference]: Start difference. First operand has 670 places, 485 transitions, 7206 flow. Second operand 36 states and 5766 transitions. [2022-07-12 10:26:11,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 612 transitions, 11599 flow [2022-07-12 10:26:12,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 612 transitions, 11110 flow, removed 190 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:12,111 INFO L242 Difference]: Finished difference. Result has 688 places, 507 transitions, 8000 flow [2022-07-12 10:26:12,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6956, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8000, PETRI_PLACES=688, PETRI_TRANSITIONS=507} [2022-07-12 10:26:12,112 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 501 predicate places. [2022-07-12 10:26:12,112 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 507 transitions, 8000 flow [2022-07-12 10:26:12,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:12,112 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:12,112 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:12,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-07-12 10:26:12,112 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash 998465354, now seen corresponding path program 73 times [2022-07-12 10:26:12,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:12,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909494158] [2022-07-12 10:26:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:12,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:12,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:12,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909494158] [2022-07-12 10:26:12,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909494158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:12,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:12,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:12,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323775118] [2022-07-12 10:26:12,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:12,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:12,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:12,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:12,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:12,217 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:12,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 507 transitions, 8000 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:12,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:12,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:12,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:13,688 INFO L129 PetriNetUnfolder]: 755/2826 cut-off events. [2022-07-12 10:26:13,688 INFO L130 PetriNetUnfolder]: For 95520/95563 co-relation queries the response was YES. [2022-07-12 10:26:13,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23165 conditions, 2826 events. 755/2826 cut-off events. For 95520/95563 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 22793 event pairs, 395 based on Foata normal form. 12/2777 useless extension candidates. Maximal degree in co-relation 22863. Up to 838 conditions per place. [2022-07-12 10:26:13,764 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 115 changer transitions 65/623 dead transitions. [2022-07-12 10:26:13,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 623 transitions, 12189 flow [2022-07-12 10:26:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:26:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 10:26:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-07-12 10:26:13,767 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-07-12 10:26:13,767 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-07-12 10:26:13,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-07-12 10:26:13,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:13,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-07-12 10:26:13,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 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) [2022-07-12 10:26:13,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:26:13,775 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:26:13,775 INFO L186 Difference]: Start difference. First operand has 688 places, 507 transitions, 8000 flow. Second operand 36 states and 5770 transitions. [2022-07-12 10:26:13,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 623 transitions, 12189 flow [2022-07-12 10:26:14,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 623 transitions, 11682 flow, removed 194 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:14,307 INFO L242 Difference]: Finished difference. Result has 707 places, 524 transitions, 8600 flow [2022-07-12 10:26:14,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7718, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8600, PETRI_PLACES=707, PETRI_TRANSITIONS=524} [2022-07-12 10:26:14,307 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 520 predicate places. [2022-07-12 10:26:14,307 INFO L495 AbstractCegarLoop]: Abstraction has has 707 places, 524 transitions, 8600 flow [2022-07-12 10:26:14,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:14,308 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:14,308 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:14,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-07-12 10:26:14,308 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:14,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:14,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1501436528, now seen corresponding path program 74 times [2022-07-12 10:26:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:14,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943330585] [2022-07-12 10:26:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:14,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:14,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943330585] [2022-07-12 10:26:14,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943330585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:14,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:14,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595439133] [2022-07-12 10:26:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:14,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:14,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:14,417 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:14,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 524 transitions, 8600 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:14,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:14,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:14,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:15,941 INFO L129 PetriNetUnfolder]: 751/2780 cut-off events. [2022-07-12 10:26:15,941 INFO L130 PetriNetUnfolder]: For 98127/98191 co-relation queries the response was YES. [2022-07-12 10:26:16,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22894 conditions, 2780 events. 751/2780 cut-off events. For 98127/98191 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22325 event pairs, 370 based on Foata normal form. 15/2733 useless extension candidates. Maximal degree in co-relation 22583. Up to 838 conditions per place. [2022-07-12 10:26:16,017 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 306 selfloop transitions, 114 changer transitions 66/635 dead transitions. [2022-07-12 10:26:16,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 721 places, 635 transitions, 12794 flow [2022-07-12 10:26:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:26:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:26:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-07-12 10:26:16,021 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-07-12 10:26:16,021 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-07-12 10:26:16,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-07-12 10:26:16,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:16,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-07-12 10:26:16,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 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) [2022-07-12 10:26:16,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:16,029 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:16,029 INFO L186 Difference]: Start difference. First operand has 707 places, 524 transitions, 8600 flow. Second operand 37 states and 5929 transitions. [2022-07-12 10:26:16,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 721 places, 635 transitions, 12794 flow [2022-07-12 10:26:16,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 701 places, 635 transitions, 12256 flow, removed 207 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:16,578 INFO L242 Difference]: Finished difference. Result has 726 places, 533 transitions, 8915 flow [2022-07-12 10:26:16,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8304, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8915, PETRI_PLACES=726, PETRI_TRANSITIONS=533} [2022-07-12 10:26:16,579 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 539 predicate places. [2022-07-12 10:26:16,579 INFO L495 AbstractCegarLoop]: Abstraction has has 726 places, 533 transitions, 8915 flow [2022-07-12 10:26:16,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:16,580 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:16,580 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-07-12 10:26:16,580 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash 982329360, now seen corresponding path program 75 times [2022-07-12 10:26:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:16,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106533585] [2022-07-12 10:26:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106533585] [2022-07-12 10:26:16,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106533585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:16,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:16,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:16,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480698573] [2022-07-12 10:26:16,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:16,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:16,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:16,687 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:16,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 533 transitions, 8915 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:16,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:16,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:16,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:18,224 INFO L129 PetriNetUnfolder]: 744/2794 cut-off events. [2022-07-12 10:26:18,224 INFO L130 PetriNetUnfolder]: For 100638/100681 co-relation queries the response was YES. [2022-07-12 10:26:18,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22744 conditions, 2794 events. 744/2794 cut-off events. For 100638/100681 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 22533 event pairs, 345 based on Foata normal form. 12/2740 useless extension candidates. Maximal degree in co-relation 22425. Up to 838 conditions per place. [2022-07-12 10:26:18,311 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 117 changer transitions 66/642 dead transitions. [2022-07-12 10:26:18,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 642 transitions, 13135 flow [2022-07-12 10:26:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:26:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:26:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-07-12 10:26:18,313 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-07-12 10:26:18,314 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-07-12 10:26:18,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-07-12 10:26:18,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:18,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-07-12 10:26:18,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 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) [2022-07-12 10:26:18,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:18,322 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:18,322 INFO L186 Difference]: Start difference. First operand has 726 places, 533 transitions, 8915 flow. Second operand 38 states and 6081 transitions. [2022-07-12 10:26:18,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 642 transitions, 13135 flow [2022-07-12 10:26:18,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 642 transitions, 12579 flow, removed 208 selfloop flow, removed 22 redundant places. [2022-07-12 10:26:18,904 INFO L242 Difference]: Finished difference. Result has 742 places, 540 transitions, 9131 flow [2022-07-12 10:26:18,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8603, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9131, PETRI_PLACES=742, PETRI_TRANSITIONS=540} [2022-07-12 10:26:18,905 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 555 predicate places. [2022-07-12 10:26:18,905 INFO L495 AbstractCegarLoop]: Abstraction has has 742 places, 540 transitions, 9131 flow [2022-07-12 10:26:18,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:18,905 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:18,905 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-07-12 10:26:18,905 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:18,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 784382108, now seen corresponding path program 76 times [2022-07-12 10:26:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:18,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336470146] [2022-07-12 10:26:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:19,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:19,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:19,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336470146] [2022-07-12 10:26:19,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336470146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:19,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:19,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:19,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366173000] [2022-07-12 10:26:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:19,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:19,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:19,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:19,010 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:19,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 540 transitions, 9131 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:19,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:19,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:19,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:20,548 INFO L129 PetriNetUnfolder]: 736/2832 cut-off events. [2022-07-12 10:26:20,548 INFO L130 PetriNetUnfolder]: For 103589/103645 co-relation queries the response was YES. [2022-07-12 10:26:20,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23078 conditions, 2832 events. 736/2832 cut-off events. For 103589/103645 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23124 event pairs, 365 based on Foata normal form. 13/2783 useless extension candidates. Maximal degree in co-relation 22754. Up to 838 conditions per place. [2022-07-12 10:26:20,626 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 314 selfloop transitions, 116 changer transitions 66/645 dead transitions. [2022-07-12 10:26:20,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 645 transitions, 13295 flow [2022-07-12 10:26:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:26:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:26:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-07-12 10:26:20,629 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-07-12 10:26:20,629 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-07-12 10:26:20,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-07-12 10:26:20,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:20,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-07-12 10:26:20,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 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) [2022-07-12 10:26:20,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:20,638 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:20,638 INFO L186 Difference]: Start difference. First operand has 742 places, 540 transitions, 9131 flow. Second operand 38 states and 6079 transitions. [2022-07-12 10:26:20,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 645 transitions, 13295 flow [2022-07-12 10:26:21,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 645 transitions, 12772 flow, removed 197 selfloop flow, removed 23 redundant places. [2022-07-12 10:26:21,259 INFO L242 Difference]: Finished difference. Result has 755 places, 546 transitions, 9350 flow [2022-07-12 10:26:21,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8848, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9350, PETRI_PLACES=755, PETRI_TRANSITIONS=546} [2022-07-12 10:26:21,259 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 568 predicate places. [2022-07-12 10:26:21,260 INFO L495 AbstractCegarLoop]: Abstraction has has 755 places, 546 transitions, 9350 flow [2022-07-12 10:26:21,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:21,260 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:21,260 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-07-12 10:26:21,260 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1855515908, now seen corresponding path program 77 times [2022-07-12 10:26:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:21,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599879182] [2022-07-12 10:26:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:21,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:21,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599879182] [2022-07-12 10:26:21,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599879182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:21,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:21,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:21,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011725240] [2022-07-12 10:26:21,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:21,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:21,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:21,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:21,388 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:21,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 546 transitions, 9350 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:21,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:21,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:21,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:23,009 INFO L129 PetriNetUnfolder]: 753/2857 cut-off events. [2022-07-12 10:26:23,009 INFO L130 PetriNetUnfolder]: For 102338/102394 co-relation queries the response was YES. [2022-07-12 10:26:23,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22991 conditions, 2857 events. 753/2857 cut-off events. For 102338/102394 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 23320 event pairs, 340 based on Foata normal form. 13/2812 useless extension candidates. Maximal degree in co-relation 22664. Up to 840 conditions per place. [2022-07-12 10:26:23,087 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 335 selfloop transitions, 145 changer transitions 105/734 dead transitions. [2022-07-12 10:26:23,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 773 places, 734 transitions, 15570 flow [2022-07-12 10:26:23,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 10:26:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-07-12 10:26:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6867 transitions. [2022-07-12 10:26:23,091 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7604651162790698 [2022-07-12 10:26:23,091 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6867 transitions. [2022-07-12 10:26:23,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6867 transitions. [2022-07-12 10:26:23,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:23,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6867 transitions. [2022-07-12 10:26:23,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.69767441860466) internal successors, (6867), 43 states have internal predecessors, (6867), 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) [2022-07-12 10:26:23,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 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) [2022-07-12 10:26:23,100 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 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) [2022-07-12 10:26:23,100 INFO L186 Difference]: Start difference. First operand has 755 places, 546 transitions, 9350 flow. Second operand 43 states and 6867 transitions. [2022-07-12 10:26:23,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 773 places, 734 transitions, 15570 flow [2022-07-12 10:26:23,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 750 places, 734 transitions, 15110 flow, removed 146 selfloop flow, removed 23 redundant places. [2022-07-12 10:26:23,771 INFO L242 Difference]: Finished difference. Result has 782 places, 567 transitions, 10187 flow [2022-07-12 10:26:23,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9031, PETRI_DIFFERENCE_MINUEND_PLACES=708, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=10187, PETRI_PLACES=782, PETRI_TRANSITIONS=567} [2022-07-12 10:26:23,772 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 595 predicate places. [2022-07-12 10:26:23,772 INFO L495 AbstractCegarLoop]: Abstraction has has 782 places, 567 transitions, 10187 flow [2022-07-12 10:26:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:23,772 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:23,772 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:23,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-07-12 10:26:23,773 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:23,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash 804427954, now seen corresponding path program 78 times [2022-07-12 10:26:23,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:23,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966534907] [2022-07-12 10:26:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:23,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:23,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:23,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966534907] [2022-07-12 10:26:23,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966534907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:23,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:23,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018170052] [2022-07-12 10:26:23,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:23,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:23,890 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:23,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 567 transitions, 10187 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:23,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:23,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:23,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:25,667 INFO L129 PetriNetUnfolder]: 788/2956 cut-off events. [2022-07-12 10:26:25,667 INFO L130 PetriNetUnfolder]: For 108443/108499 co-relation queries the response was YES. [2022-07-12 10:26:25,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24291 conditions, 2956 events. 788/2956 cut-off events. For 108443/108499 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 24417 event pairs, 319 based on Foata normal form. 13/2902 useless extension candidates. Maximal degree in co-relation 23952. Up to 860 conditions per place. [2022-07-12 10:26:25,748 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 184 changer transitions 90/759 dead transitions. [2022-07-12 10:26:25,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 797 places, 759 transitions, 16350 flow [2022-07-12 10:26:25,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-12 10:26:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-07-12 10:26:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2022-07-12 10:26:25,751 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2022-07-12 10:26:25,751 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2022-07-12 10:26:25,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2022-07-12 10:26:25,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:25,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2022-07-12 10:26:25,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 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) [2022-07-12 10:26:25,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:26:25,761 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 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) [2022-07-12 10:26:25,761 INFO L186 Difference]: Start difference. First operand has 782 places, 567 transitions, 10187 flow. Second operand 46 states and 7341 transitions. [2022-07-12 10:26:25,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 797 places, 759 transitions, 16350 flow [2022-07-12 10:26:26,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 758 places, 759 transitions, 15560 flow, removed 192 selfloop flow, removed 39 redundant places. [2022-07-12 10:26:26,474 INFO L242 Difference]: Finished difference. Result has 791 places, 593 transitions, 10751 flow [2022-07-12 10:26:26,474 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9625, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=10751, PETRI_PLACES=791, PETRI_TRANSITIONS=593} [2022-07-12 10:26:26,475 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 604 predicate places. [2022-07-12 10:26:26,475 INFO L495 AbstractCegarLoop]: Abstraction has has 791 places, 593 transitions, 10751 flow [2022-07-12 10:26:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:26,475 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:26,475 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-07-12 10:26:26,476 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:26,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2085860442, now seen corresponding path program 79 times [2022-07-12 10:26:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:26,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163299595] [2022-07-12 10:26:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:26,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:26,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163299595] [2022-07-12 10:26:26,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163299595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:26,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:26,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:26,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17277324] [2022-07-12 10:26:26,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:26,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:26,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:26,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 593 transitions, 10751 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:26,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:26,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:26,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:28,354 INFO L129 PetriNetUnfolder]: 802/3006 cut-off events. [2022-07-12 10:26:28,354 INFO L130 PetriNetUnfolder]: For 95261/95300 co-relation queries the response was YES. [2022-07-12 10:26:28,429 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24157 conditions, 3006 events. 802/3006 cut-off events. For 95261/95300 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 24865 event pairs, 376 based on Foata normal form. 11/2953 useless extension candidates. Maximal degree in co-relation 23819. Up to 880 conditions per place. [2022-07-12 10:26:28,442 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 362 selfloop transitions, 150 changer transitions 93/754 dead transitions. [2022-07-12 10:26:28,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 754 transitions, 16249 flow [2022-07-12 10:26:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:26:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-07-12 10:26:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-07-12 10:26:28,445 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-07-12 10:26:28,445 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-07-12 10:26:28,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-07-12 10:26:28,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:28,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-07-12 10:26:28,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 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) [2022-07-12 10:26:28,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 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) [2022-07-12 10:26:28,455 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 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) [2022-07-12 10:26:28,455 INFO L186 Difference]: Start difference. First operand has 791 places, 593 transitions, 10751 flow. Second operand 44 states and 7032 transitions. [2022-07-12 10:26:28,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 801 places, 754 transitions, 16249 flow [2022-07-12 10:26:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 772 places, 754 transitions, 15970 flow, removed 95 selfloop flow, removed 29 redundant places. [2022-07-12 10:26:29,123 INFO L242 Difference]: Finished difference. Result has 805 places, 615 transitions, 11693 flow [2022-07-12 10:26:29,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10574, PETRI_DIFFERENCE_MINUEND_PLACES=729, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=11693, PETRI_PLACES=805, PETRI_TRANSITIONS=615} [2022-07-12 10:26:29,124 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 618 predicate places. [2022-07-12 10:26:29,124 INFO L495 AbstractCegarLoop]: Abstraction has has 805 places, 615 transitions, 11693 flow [2022-07-12 10:26:29,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:29,124 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:29,124 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:29,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-07-12 10:26:29,124 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:29,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:29,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2083118272, now seen corresponding path program 80 times [2022-07-12 10:26:29,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:29,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476365299] [2022-07-12 10:26:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:29,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:29,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:29,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476365299] [2022-07-12 10:26:29,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476365299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:29,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:29,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:29,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294134143] [2022-07-12 10:26:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:29,254 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:29,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 615 transitions, 11693 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:29,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:29,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:29,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:31,032 INFO L129 PetriNetUnfolder]: 798/2995 cut-off events. [2022-07-12 10:26:31,032 INFO L130 PetriNetUnfolder]: For 98869/98908 co-relation queries the response was YES. [2022-07-12 10:26:31,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24276 conditions, 2995 events. 798/2995 cut-off events. For 98869/98908 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 24702 event pairs, 386 based on Foata normal form. 11/2944 useless extension candidates. Maximal degree in co-relation 23932. Up to 876 conditions per place. [2022-07-12 10:26:31,118 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 311 selfloop transitions, 191 changer transitions 82/733 dead transitions. [2022-07-12 10:26:31,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 733 transitions, 15901 flow [2022-07-12 10:26:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-12 10:26:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-07-12 10:26:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-07-12 10:26:31,122 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-07-12 10:26:31,122 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-07-12 10:26:31,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-07-12 10:26:31,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:31,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-07-12 10:26:31,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 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) [2022-07-12 10:26:31,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 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) [2022-07-12 10:26:31,131 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 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) [2022-07-12 10:26:31,131 INFO L186 Difference]: Start difference. First operand has 805 places, 615 transitions, 11693 flow. Second operand 45 states and 7187 transitions. [2022-07-12 10:26:31,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 818 places, 733 transitions, 15901 flow [2022-07-12 10:26:31,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 784 places, 733 transitions, 15275 flow, removed 179 selfloop flow, removed 34 redundant places. [2022-07-12 10:26:31,837 INFO L242 Difference]: Finished difference. Result has 816 places, 617 transitions, 11907 flow [2022-07-12 10:26:31,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11248, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11907, PETRI_PLACES=816, PETRI_TRANSITIONS=617} [2022-07-12 10:26:31,838 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 629 predicate places. [2022-07-12 10:26:31,838 INFO L495 AbstractCegarLoop]: Abstraction has has 816 places, 617 transitions, 11907 flow [2022-07-12 10:26:31,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:31,838 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:31,839 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:31,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-07-12 10:26:31,839 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:31,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash -5086072, now seen corresponding path program 81 times [2022-07-12 10:26:31,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:31,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724055402] [2022-07-12 10:26:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:31,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:31,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:31,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724055402] [2022-07-12 10:26:31,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724055402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:31,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:31,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:31,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264965402] [2022-07-12 10:26:31,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:31,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:31,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:31,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:31,957 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:31,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 816 places, 617 transitions, 11907 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:31,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:31,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:31,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:33,682 INFO L129 PetriNetUnfolder]: 792/3009 cut-off events. [2022-07-12 10:26:33,682 INFO L130 PetriNetUnfolder]: For 96294/96350 co-relation queries the response was YES. [2022-07-12 10:26:33,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24229 conditions, 3009 events. 792/3009 cut-off events. For 96294/96350 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25033 event pairs, 378 based on Foata normal form. 13/2954 useless extension candidates. Maximal degree in co-relation 23883. Up to 896 conditions per place. [2022-07-12 10:26:33,785 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 355 selfloop transitions, 159 changer transitions 78/741 dead transitions. [2022-07-12 10:26:33,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 741 transitions, 16257 flow [2022-07-12 10:26:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:26:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 10:26:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-07-12 10:26:33,788 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-07-12 10:26:33,788 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-07-12 10:26:33,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-07-12 10:26:33,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:33,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-07-12 10:26:33,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 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) [2022-07-12 10:26:33,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:26:33,796 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:26:33,796 INFO L186 Difference]: Start difference. First operand has 816 places, 617 transitions, 11907 flow. Second operand 36 states and 5770 transitions. [2022-07-12 10:26:33,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 741 transitions, 16257 flow [2022-07-12 10:26:34,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 784 places, 741 transitions, 15599 flow, removed 190 selfloop flow, removed 35 redundant places. [2022-07-12 10:26:34,507 INFO L242 Difference]: Finished difference. Result has 807 places, 633 transitions, 12315 flow [2022-07-12 10:26:34,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11452, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12315, PETRI_PLACES=807, PETRI_TRANSITIONS=633} [2022-07-12 10:26:34,508 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 620 predicate places. [2022-07-12 10:26:34,508 INFO L495 AbstractCegarLoop]: Abstraction has has 807 places, 633 transitions, 12315 flow [2022-07-12 10:26:34,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:34,508 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:34,508 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:34,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-07-12 10:26:34,509 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:34,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:34,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2010206374, now seen corresponding path program 82 times [2022-07-12 10:26:34,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:34,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877138882] [2022-07-12 10:26:34,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:34,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:34,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:34,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877138882] [2022-07-12 10:26:34,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877138882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:34,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:34,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:34,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848044221] [2022-07-12 10:26:34,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:34,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:34,620 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:34,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 807 places, 633 transitions, 12315 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:34,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:34,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:34,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:36,189 INFO L129 PetriNetUnfolder]: 786/3015 cut-off events. [2022-07-12 10:26:36,189 INFO L130 PetriNetUnfolder]: For 92428/92484 co-relation queries the response was YES. [2022-07-12 10:26:36,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24034 conditions, 3015 events. 786/3015 cut-off events. For 92428/92484 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25209 event pairs, 322 based on Foata normal form. 13/2959 useless extension candidates. Maximal degree in co-relation 23697. Up to 893 conditions per place. [2022-07-12 10:26:36,274 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 347 selfloop transitions, 202 changer transitions 80/778 dead transitions. [2022-07-12 10:26:36,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 778 transitions, 17349 flow [2022-07-12 10:26:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:26:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:26:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-07-12 10:26:36,277 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-07-12 10:26:36,277 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-07-12 10:26:36,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-07-12 10:26:36,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:36,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-07-12 10:26:36,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 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) [2022-07-12 10:26:36,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:36,285 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:36,285 INFO L186 Difference]: Start difference. First operand has 807 places, 633 transitions, 12315 flow. Second operand 38 states and 6079 transitions. [2022-07-12 10:26:36,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 778 transitions, 17349 flow [2022-07-12 10:26:36,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 778 transitions, 16870 flow, removed 91 selfloop flow, removed 24 redundant places. [2022-07-12 10:26:36,989 INFO L242 Difference]: Finished difference. Result has 821 places, 640 transitions, 12703 flow [2022-07-12 10:26:36,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11947, PETRI_DIFFERENCE_MINUEND_PLACES=761, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12703, PETRI_PLACES=821, PETRI_TRANSITIONS=640} [2022-07-12 10:26:36,990 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 634 predicate places. [2022-07-12 10:26:36,990 INFO L495 AbstractCegarLoop]: Abstraction has has 821 places, 640 transitions, 12703 flow [2022-07-12 10:26:36,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:36,991 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:36,991 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:36,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-07-12 10:26:36,991 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:36,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1062619114, now seen corresponding path program 83 times [2022-07-12 10:26:36,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:36,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708543584] [2022-07-12 10:26:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:37,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:37,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708543584] [2022-07-12 10:26:37,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708543584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:37,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:37,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:37,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046949963] [2022-07-12 10:26:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:37,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:37,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:37,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:37,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:37,113 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:37,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 640 transitions, 12703 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:37,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:37,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:37,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:38,768 INFO L129 PetriNetUnfolder]: 811/3082 cut-off events. [2022-07-12 10:26:38,769 INFO L130 PetriNetUnfolder]: For 95780/95836 co-relation queries the response was YES. [2022-07-12 10:26:38,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24975 conditions, 3082 events. 811/3082 cut-off events. For 95780/95836 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 25859 event pairs, 388 based on Foata normal form. 13/3028 useless extension candidates. Maximal degree in co-relation 24634. Up to 906 conditions per place. [2022-07-12 10:26:38,856 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 367 selfloop transitions, 167 changer transitions 70/753 dead transitions. [2022-07-12 10:26:38,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 833 places, 753 transitions, 16747 flow [2022-07-12 10:26:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:26:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:26:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2022-07-12 10:26:38,859 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2022-07-12 10:26:38,859 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2022-07-12 10:26:38,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2022-07-12 10:26:38,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:38,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2022-07-12 10:26:38,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 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) [2022-07-12 10:26:38,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:38,867 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:38,867 INFO L186 Difference]: Start difference. First operand has 821 places, 640 transitions, 12703 flow. Second operand 37 states and 5933 transitions. [2022-07-12 10:26:38,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 833 places, 753 transitions, 16747 flow [2022-07-12 10:26:39,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 811 places, 753 transitions, 16438 flow, removed 80 selfloop flow, removed 22 redundant places. [2022-07-12 10:26:39,623 INFO L242 Difference]: Finished difference. Result has 835 places, 659 transitions, 13456 flow [2022-07-12 10:26:39,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12474, PETRI_DIFFERENCE_MINUEND_PLACES=775, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13456, PETRI_PLACES=835, PETRI_TRANSITIONS=659} [2022-07-12 10:26:39,624 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 648 predicate places. [2022-07-12 10:26:39,624 INFO L495 AbstractCegarLoop]: Abstraction has has 835 places, 659 transitions, 13456 flow [2022-07-12 10:26:39,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:39,624 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:39,624 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:39,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-07-12 10:26:39,624 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:39,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1151160580, now seen corresponding path program 84 times [2022-07-12 10:26:39,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:39,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841948741] [2022-07-12 10:26:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:39,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:39,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:39,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841948741] [2022-07-12 10:26:39,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841948741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:39,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:39,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:39,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936578079] [2022-07-12 10:26:39,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:39,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:39,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:39,741 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:39,742 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 835 places, 659 transitions, 13456 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:39,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:39,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:39,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:41,458 INFO L129 PetriNetUnfolder]: 804/3069 cut-off events. [2022-07-12 10:26:41,458 INFO L130 PetriNetUnfolder]: For 97163/97219 co-relation queries the response was YES. [2022-07-12 10:26:41,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24972 conditions, 3069 events. 804/3069 cut-off events. For 97163/97219 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 25738 event pairs, 372 based on Foata normal form. 13/3014 useless extension candidates. Maximal degree in co-relation 24626. Up to 902 conditions per place. [2022-07-12 10:26:41,544 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 377 selfloop transitions, 168 changer transitions 74/768 dead transitions. [2022-07-12 10:26:41,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 768 transitions, 17620 flow [2022-07-12 10:26:41,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:26:41,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:26:41,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2022-07-12 10:26:41,547 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2022-07-12 10:26:41,547 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2022-07-12 10:26:41,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2022-07-12 10:26:41,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:41,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2022-07-12 10:26:41,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 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) [2022-07-12 10:26:41,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:41,555 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:41,555 INFO L186 Difference]: Start difference. First operand has 835 places, 659 transitions, 13456 flow. Second operand 38 states and 6087 transitions. [2022-07-12 10:26:41,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 849 places, 768 transitions, 17620 flow [2022-07-12 10:26:42,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 768 transitions, 17166 flow, removed 121 selfloop flow, removed 21 redundant places. [2022-07-12 10:26:42,286 INFO L242 Difference]: Finished difference. Result has 851 places, 664 transitions, 13795 flow [2022-07-12 10:26:42,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13157, PETRI_DIFFERENCE_MINUEND_PLACES=791, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=13795, PETRI_PLACES=851, PETRI_TRANSITIONS=664} [2022-07-12 10:26:42,287 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 664 predicate places. [2022-07-12 10:26:42,287 INFO L495 AbstractCegarLoop]: Abstraction has has 851 places, 664 transitions, 13795 flow [2022-07-12 10:26:42,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:42,287 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:42,287 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:42,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-07-12 10:26:42,288 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:42,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:42,288 INFO L85 PathProgramCache]: Analyzing trace with hash 447602958, now seen corresponding path program 85 times [2022-07-12 10:26:42,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:42,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435286197] [2022-07-12 10:26:42,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:42,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:42,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:42,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435286197] [2022-07-12 10:26:42,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435286197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:42,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:42,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469998802] [2022-07-12 10:26:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:42,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:42,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:42,391 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:42,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 851 places, 664 transitions, 13795 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:42,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:42,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:42,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:44,075 INFO L129 PetriNetUnfolder]: 809/3068 cut-off events. [2022-07-12 10:26:44,075 INFO L130 PetriNetUnfolder]: For 95805/95844 co-relation queries the response was YES. [2022-07-12 10:26:44,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24926 conditions, 3068 events. 809/3068 cut-off events. For 95805/95844 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25637 event pairs, 368 based on Foata normal form. 11/3012 useless extension candidates. Maximal degree in co-relation 24574. Up to 915 conditions per place. [2022-07-12 10:26:44,164 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 359 selfloop transitions, 198 changer transitions 80/786 dead transitions. [2022-07-12 10:26:44,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 861 places, 786 transitions, 18153 flow [2022-07-12 10:26:44,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:26:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-07-12 10:26:44,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5606 transitions. [2022-07-12 10:26:44,167 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7627210884353741 [2022-07-12 10:26:44,167 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5606 transitions. [2022-07-12 10:26:44,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5606 transitions. [2022-07-12 10:26:44,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:44,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5606 transitions. [2022-07-12 10:26:44,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.17142857142858) internal successors, (5606), 35 states have internal predecessors, (5606), 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) [2022-07-12 10:26:44,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 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) [2022-07-12 10:26:44,174 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 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) [2022-07-12 10:26:44,174 INFO L186 Difference]: Start difference. First operand has 851 places, 664 transitions, 13795 flow. Second operand 35 states and 5606 transitions. [2022-07-12 10:26:44,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 861 places, 786 transitions, 18153 flow [2022-07-12 10:26:44,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 840 places, 786 transitions, 17778 flow, removed 81 selfloop flow, removed 21 redundant places. [2022-07-12 10:26:44,934 INFO L242 Difference]: Finished difference. Result has 862 places, 677 transitions, 14360 flow [2022-07-12 10:26:44,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13483, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=14360, PETRI_PLACES=862, PETRI_TRANSITIONS=677} [2022-07-12 10:26:44,935 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 675 predicate places. [2022-07-12 10:26:44,935 INFO L495 AbstractCegarLoop]: Abstraction has has 862 places, 677 transitions, 14360 flow [2022-07-12 10:26:44,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:44,935 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:44,935 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:44,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-07-12 10:26:44,936 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1277149162, now seen corresponding path program 86 times [2022-07-12 10:26:44,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:44,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820177516] [2022-07-12 10:26:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:44,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:45,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:45,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820177516] [2022-07-12 10:26:45,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820177516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:45,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:45,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:45,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116604252] [2022-07-12 10:26:45,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:45,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:45,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:45,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:45,054 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:45,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 862 places, 677 transitions, 14360 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:45,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:45,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:45,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:46,945 INFO L129 PetriNetUnfolder]: 826/3165 cut-off events. [2022-07-12 10:26:46,945 INFO L130 PetriNetUnfolder]: For 101092/101131 co-relation queries the response was YES. [2022-07-12 10:26:47,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26032 conditions, 3165 events. 826/3165 cut-off events. For 101092/101131 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 26782 event pairs, 383 based on Foata normal form. 11/3103 useless extension candidates. Maximal degree in co-relation 25676. Up to 927 conditions per place. [2022-07-12 10:26:47,025 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 359 selfloop transitions, 214 changer transitions 69/791 dead transitions. [2022-07-12 10:26:47,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 878 places, 791 transitions, 18584 flow [2022-07-12 10:26:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:26:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:26:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2022-07-12 10:26:47,027 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2022-07-12 10:26:47,027 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2022-07-12 10:26:47,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2022-07-12 10:26:47,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:47,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2022-07-12 10:26:47,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 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) [2022-07-12 10:26:47,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:47,035 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:47,035 INFO L186 Difference]: Start difference. First operand has 862 places, 677 transitions, 14360 flow. Second operand 38 states and 6085 transitions. [2022-07-12 10:26:47,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 878 places, 791 transitions, 18584 flow [2022-07-12 10:26:47,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 851 places, 791 transitions, 17923 flow, removed 97 selfloop flow, removed 27 redundant places. [2022-07-12 10:26:47,814 INFO L242 Difference]: Finished difference. Result has 875 places, 696 transitions, 14883 flow [2022-07-12 10:26:47,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13795, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14883, PETRI_PLACES=875, PETRI_TRANSITIONS=696} [2022-07-12 10:26:47,814 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 688 predicate places. [2022-07-12 10:26:47,815 INFO L495 AbstractCegarLoop]: Abstraction has has 875 places, 696 transitions, 14883 flow [2022-07-12 10:26:47,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:47,815 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:47,815 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-07-12 10:26:47,815 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:47,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1059529922, now seen corresponding path program 87 times [2022-07-12 10:26:47,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:47,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563257633] [2022-07-12 10:26:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:47,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563257633] [2022-07-12 10:26:47,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563257633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:47,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:47,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:47,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190149930] [2022-07-12 10:26:47,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:47,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:47,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:47,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:47,920 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:47,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 875 places, 696 transitions, 14883 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:47,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:47,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:47,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:49,752 INFO L129 PetriNetUnfolder]: 850/3227 cut-off events. [2022-07-12 10:26:49,752 INFO L130 PetriNetUnfolder]: For 102929/102968 co-relation queries the response was YES. [2022-07-12 10:26:49,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26605 conditions, 3227 events. 850/3227 cut-off events. For 102929/102968 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27465 event pairs, 362 based on Foata normal form. 11/3163 useless extension candidates. Maximal degree in co-relation 26246. Up to 938 conditions per place. [2022-07-12 10:26:49,846 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 410 selfloop transitions, 196 changer transitions 75/830 dead transitions. [2022-07-12 10:26:49,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 888 places, 830 transitions, 19816 flow [2022-07-12 10:26:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:26:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-07-12 10:26:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-07-12 10:26:49,849 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-07-12 10:26:49,849 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-07-12 10:26:49,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-07-12 10:26:49,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:49,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-07-12 10:26:49,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 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) [2022-07-12 10:26:49,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:49,857 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 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) [2022-07-12 10:26:49,857 INFO L186 Difference]: Start difference. First operand has 875 places, 696 transitions, 14883 flow. Second operand 38 states and 6083 transitions. [2022-07-12 10:26:49,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 888 places, 830 transitions, 19816 flow [2022-07-12 10:26:50,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 868 places, 830 transitions, 19448 flow, removed 78 selfloop flow, removed 20 redundant places. [2022-07-12 10:26:50,668 INFO L242 Difference]: Finished difference. Result has 891 places, 716 transitions, 15731 flow [2022-07-12 10:26:50,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14583, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15731, PETRI_PLACES=891, PETRI_TRANSITIONS=716} [2022-07-12 10:26:50,670 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 704 predicate places. [2022-07-12 10:26:50,670 INFO L495 AbstractCegarLoop]: Abstraction has has 891 places, 716 transitions, 15731 flow [2022-07-12 10:26:50,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:50,670 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:50,670 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:50,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-07-12 10:26:50,670 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1919203644, now seen corresponding path program 88 times [2022-07-12 10:26:50,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:50,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672077720] [2022-07-12 10:26:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:50,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:50,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672077720] [2022-07-12 10:26:50,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672077720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:50,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:50,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:50,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409235008] [2022-07-12 10:26:50,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:50,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:50,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:50,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:50,793 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:50,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 716 transitions, 15731 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:50,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:50,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:50,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:52,644 INFO L129 PetriNetUnfolder]: 841/3201 cut-off events. [2022-07-12 10:26:52,644 INFO L130 PetriNetUnfolder]: For 102108/102164 co-relation queries the response was YES. [2022-07-12 10:26:52,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26635 conditions, 3201 events. 841/3201 cut-off events. For 102108/102164 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 27260 event pairs, 384 based on Foata normal form. 13/3140 useless extension candidates. Maximal degree in co-relation 26270. Up to 934 conditions per place. [2022-07-12 10:26:52,737 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 365 selfloop transitions, 227 changer transitions 71/812 dead transitions. [2022-07-12 10:26:52,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 812 transitions, 19524 flow [2022-07-12 10:26:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:26:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:26:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-07-12 10:26:52,740 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-07-12 10:26:52,740 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-07-12 10:26:52,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-07-12 10:26:52,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:52,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-07-12 10:26:52,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 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) [2022-07-12 10:26:52,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:52,748 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:52,748 INFO L186 Difference]: Start difference. First operand has 891 places, 716 transitions, 15731 flow. Second operand 37 states and 5925 transitions. [2022-07-12 10:26:52,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 812 transitions, 19524 flow [2022-07-12 10:26:53,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 884 places, 812 transitions, 19172 flow, removed 79 selfloop flow, removed 19 redundant places. [2022-07-12 10:26:53,619 INFO L242 Difference]: Finished difference. Result has 907 places, 719 transitions, 16108 flow [2022-07-12 10:26:53,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15445, PETRI_DIFFERENCE_MINUEND_PLACES=848, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16108, PETRI_PLACES=907, PETRI_TRANSITIONS=719} [2022-07-12 10:26:53,620 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 720 predicate places. [2022-07-12 10:26:53,620 INFO L495 AbstractCegarLoop]: Abstraction has has 907 places, 719 transitions, 16108 flow [2022-07-12 10:26:53,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:53,620 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:53,620 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:53,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-07-12 10:26:53,620 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash 719141910, now seen corresponding path program 89 times [2022-07-12 10:26:53,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:53,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323539661] [2022-07-12 10:26:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:53,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:53,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:53,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323539661] [2022-07-12 10:26:53,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323539661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:53,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:53,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801028308] [2022-07-12 10:26:53,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:53,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:53,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:53,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:53,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 907 places, 719 transitions, 16108 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:53,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:53,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:53,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:55,574 INFO L129 PetriNetUnfolder]: 852/3214 cut-off events. [2022-07-12 10:26:55,574 INFO L130 PetriNetUnfolder]: For 105060/105116 co-relation queries the response was YES. [2022-07-12 10:26:55,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26994 conditions, 3214 events. 852/3214 cut-off events. For 105060/105116 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 27346 event pairs, 379 based on Foata normal form. 13/3152 useless extension candidates. Maximal degree in co-relation 26622. Up to 948 conditions per place. [2022-07-12 10:26:55,670 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 428 selfloop transitions, 183 changer transitions 76/836 dead transitions. [2022-07-12 10:26:55,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 836 transitions, 20758 flow [2022-07-12 10:26:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:26:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-07-12 10:26:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5774 transitions. [2022-07-12 10:26:55,673 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7637566137566137 [2022-07-12 10:26:55,673 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5774 transitions. [2022-07-12 10:26:55,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5774 transitions. [2022-07-12 10:26:55,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:55,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5774 transitions. [2022-07-12 10:26:55,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.38888888888889) internal successors, (5774), 36 states have internal predecessors, (5774), 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) [2022-07-12 10:26:55,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:26:55,680 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 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) [2022-07-12 10:26:55,680 INFO L186 Difference]: Start difference. First operand has 907 places, 719 transitions, 16108 flow. Second operand 36 states and 5774 transitions. [2022-07-12 10:26:55,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 919 places, 836 transitions, 20758 flow [2022-07-12 10:26:56,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 836 transitions, 20298 flow, removed 81 selfloop flow, removed 27 redundant places. [2022-07-12 10:26:56,566 INFO L242 Difference]: Finished difference. Result has 915 places, 735 transitions, 16752 flow [2022-07-12 10:26:56,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15710, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16752, PETRI_PLACES=915, PETRI_TRANSITIONS=735} [2022-07-12 10:26:56,567 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 728 predicate places. [2022-07-12 10:26:56,567 INFO L495 AbstractCegarLoop]: Abstraction has has 915 places, 735 transitions, 16752 flow [2022-07-12 10:26:56,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:56,567 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:56,567 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:56,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-07-12 10:26:56,568 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:56,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash -295673624, now seen corresponding path program 90 times [2022-07-12 10:26:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:56,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878000801] [2022-07-12 10:26:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:56,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:56,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:56,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878000801] [2022-07-12 10:26:56,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878000801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:56,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:56,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:56,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829862278] [2022-07-12 10:26:56,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:56,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:56,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:56,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:56,673 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:56,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 735 transitions, 16752 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:56,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:56,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:56,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:26:58,715 INFO L129 PetriNetUnfolder]: 851/3234 cut-off events. [2022-07-12 10:26:58,715 INFO L130 PetriNetUnfolder]: For 104927/104983 co-relation queries the response was YES. [2022-07-12 10:26:58,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27240 conditions, 3234 events. 851/3234 cut-off events. For 104927/104983 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27540 event pairs, 382 based on Foata normal form. 13/3177 useless extension candidates. Maximal degree in co-relation 26868. Up to 946 conditions per place. [2022-07-12 10:26:58,796 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 412 selfloop transitions, 198 changer transitions 71/830 dead transitions. [2022-07-12 10:26:58,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 830 transitions, 20725 flow [2022-07-12 10:26:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 10:26:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-12 10:26:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-07-12 10:26:58,799 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-07-12 10:26:58,799 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-07-12 10:26:58,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-07-12 10:26:58,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:26:58,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-07-12 10:26:58,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 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) [2022-07-12 10:26:58,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:58,806 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 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) [2022-07-12 10:26:58,806 INFO L186 Difference]: Start difference. First operand has 915 places, 735 transitions, 16752 flow. Second operand 37 states and 5929 transitions. [2022-07-12 10:26:58,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 830 transitions, 20725 flow [2022-07-12 10:26:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 905 places, 830 transitions, 20157 flow, removed 126 selfloop flow, removed 24 redundant places. [2022-07-12 10:26:59,680 INFO L242 Difference]: Finished difference. Result has 927 places, 737 transitions, 16880 flow [2022-07-12 10:26:59,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16303, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16880, PETRI_PLACES=927, PETRI_TRANSITIONS=737} [2022-07-12 10:26:59,681 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 740 predicate places. [2022-07-12 10:26:59,681 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 737 transitions, 16880 flow [2022-07-12 10:26:59,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:59,681 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:26:59,681 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:26:59,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-07-12 10:26:59,681 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:26:59,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:26:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash -185393340, now seen corresponding path program 91 times [2022-07-12 10:26:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:26:59,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970492174] [2022-07-12 10:26:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:26:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:26:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:26:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:26:59,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:26:59,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970492174] [2022-07-12 10:26:59,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970492174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:26:59,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:26:59,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:26:59,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947892992] [2022-07-12 10:26:59,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:26:59,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:26:59,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:26:59,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:26:59,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:26:59,787 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:26:59,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 737 transitions, 16880 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:26:59,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:26:59,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:26:59,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:01,533 INFO L129 PetriNetUnfolder]: 839/3238 cut-off events. [2022-07-12 10:27:01,533 INFO L130 PetriNetUnfolder]: For 105038/105077 co-relation queries the response was YES. [2022-07-12 10:27:01,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27040 conditions, 3238 events. 839/3238 cut-off events. For 105038/105077 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 27695 event pairs, 333 based on Foata normal form. 11/3180 useless extension candidates. Maximal degree in co-relation 26665. Up to 953 conditions per place. [2022-07-12 10:27:01,631 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 239 changer transitions 70/848 dead transitions. [2022-07-12 10:27:01,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 848 transitions, 21127 flow [2022-07-12 10:27:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-07-12 10:27:01,634 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-07-12 10:27:01,634 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-07-12 10:27:01,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-07-12 10:27:01,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:01,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-07-12 10:27:01,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 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) [2022-07-12 10:27:01,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:01,640 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:01,640 INFO L186 Difference]: Start difference. First operand has 927 places, 737 transitions, 16880 flow. Second operand 30 states and 4817 transitions. [2022-07-12 10:27:01,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 848 transitions, 21127 flow [2022-07-12 10:27:02,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 899 places, 848 transitions, 20454 flow, removed 109 selfloop flow, removed 34 redundant places. [2022-07-12 10:27:02,504 INFO L242 Difference]: Finished difference. Result has 912 places, 743 transitions, 17000 flow [2022-07-12 10:27:02,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16285, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17000, PETRI_PLACES=912, PETRI_TRANSITIONS=743} [2022-07-12 10:27:02,505 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 725 predicate places. [2022-07-12 10:27:02,505 INFO L495 AbstractCegarLoop]: Abstraction has has 912 places, 743 transitions, 17000 flow [2022-07-12 10:27:02,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:02,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:02,506 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-07-12 10:27:02,506 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:02,506 INFO L85 PathProgramCache]: Analyzing trace with hash 67106810, now seen corresponding path program 92 times [2022-07-12 10:27:02,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70998743] [2022-07-12 10:27:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:02,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:02,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70998743] [2022-07-12 10:27:02,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70998743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:02,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:02,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:02,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976902384] [2022-07-12 10:27:02,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:02,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:02,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:02,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:02,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:02,619 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:02,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 912 places, 743 transitions, 17000 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:02,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:02,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:02,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:04,305 INFO L129 PetriNetUnfolder]: 827/3169 cut-off events. [2022-07-12 10:27:04,305 INFO L130 PetriNetUnfolder]: For 99742/99798 co-relation queries the response was YES. [2022-07-12 10:27:04,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26317 conditions, 3169 events. 827/3169 cut-off events. For 99742/99798 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 26918 event pairs, 374 based on Foata normal form. 13/3108 useless extension candidates. Maximal degree in co-relation 25959. Up to 944 conditions per place. [2022-07-12 10:27:04,396 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 391 selfloop transitions, 221 changer transitions 60/821 dead transitions. [2022-07-12 10:27:04,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 926 places, 821 transitions, 20336 flow [2022-07-12 10:27:04,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:04,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-07-12 10:27:04,398 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-07-12 10:27:04,398 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-07-12 10:27:04,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-07-12 10:27:04,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:04,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-07-12 10:27:04,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 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) [2022-07-12 10:27:04,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:04,404 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:04,405 INFO L186 Difference]: Start difference. First operand has 912 places, 743 transitions, 17000 flow. Second operand 30 states and 4823 transitions. [2022-07-12 10:27:04,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 926 places, 821 transitions, 20336 flow [2022-07-12 10:27:05,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 912 places, 821 transitions, 20006 flow, removed 80 selfloop flow, removed 14 redundant places. [2022-07-12 10:27:05,178 INFO L242 Difference]: Finished difference. Result has 926 places, 748 transitions, 17396 flow [2022-07-12 10:27:05,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16734, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17396, PETRI_PLACES=926, PETRI_TRANSITIONS=748} [2022-07-12 10:27:05,179 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 739 predicate places. [2022-07-12 10:27:05,179 INFO L495 AbstractCegarLoop]: Abstraction has has 926 places, 748 transitions, 17396 flow [2022-07-12 10:27:05,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:05,179 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:05,180 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-07-12 10:27:05,180 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1858729482, now seen corresponding path program 93 times [2022-07-12 10:27:05,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:05,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418176654] [2022-07-12 10:27:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:05,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:05,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:05,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418176654] [2022-07-12 10:27:05,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418176654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:05,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:05,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:05,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002805771] [2022-07-12 10:27:05,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:05,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:05,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:05,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:05,281 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:05,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 748 transitions, 17396 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:05,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:05,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:05,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:06,993 INFO L129 PetriNetUnfolder]: 821/3174 cut-off events. [2022-07-12 10:27:06,994 INFO L130 PetriNetUnfolder]: For 100568/100607 co-relation queries the response was YES. [2022-07-12 10:27:07,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26355 conditions, 3174 events. 821/3174 cut-off events. For 100568/100607 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26892 event pairs, 362 based on Foata normal form. 11/3115 useless extension candidates. Maximal degree in co-relation 25994. Up to 951 conditions per place. [2022-07-12 10:27:07,088 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 416 selfloop transitions, 208 changer transitions 63/836 dead transitions. [2022-07-12 10:27:07,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 836 transitions, 21053 flow [2022-07-12 10:27:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-07-12 10:27:07,090 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-07-12 10:27:07,090 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-07-12 10:27:07,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-07-12 10:27:07,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:07,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-07-12 10:27:07,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 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) [2022-07-12 10:27:07,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:07,097 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:07,097 INFO L186 Difference]: Start difference. First operand has 926 places, 748 transitions, 17396 flow. Second operand 30 states and 4819 transitions. [2022-07-12 10:27:07,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 836 transitions, 21053 flow [2022-07-12 10:27:07,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 836 transitions, 20684 flow, removed 69 selfloop flow, removed 14 redundant places. [2022-07-12 10:27:07,956 INFO L242 Difference]: Finished difference. Result has 939 places, 754 transitions, 17725 flow [2022-07-12 10:27:07,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17061, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17725, PETRI_PLACES=939, PETRI_TRANSITIONS=754} [2022-07-12 10:27:07,957 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 752 predicate places. [2022-07-12 10:27:07,957 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 754 transitions, 17725 flow [2022-07-12 10:27:07,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:07,957 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:07,958 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:07,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-07-12 10:27:07,958 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 68148550, now seen corresponding path program 94 times [2022-07-12 10:27:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:07,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904891278] [2022-07-12 10:27:07,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:07,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:08,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:08,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904891278] [2022-07-12 10:27:08,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904891278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:08,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:08,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909500306] [2022-07-12 10:27:08,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:08,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:08,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:08,073 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:08,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 754 transitions, 17725 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:08,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:08,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:08,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:09,826 INFO L129 PetriNetUnfolder]: 824/3181 cut-off events. [2022-07-12 10:27:09,826 INFO L130 PetriNetUnfolder]: For 101598/101637 co-relation queries the response was YES. [2022-07-12 10:27:09,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26527 conditions, 3181 events. 824/3181 cut-off events. For 101598/101637 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26993 event pairs, 363 based on Foata normal form. 11/3122 useless extension candidates. Maximal degree in co-relation 26163. Up to 949 conditions per place. [2022-07-12 10:27:09,927 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 187 changer transitions 62/838 dead transitions. [2022-07-12 10:27:09,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 951 places, 838 transitions, 21409 flow [2022-07-12 10:27:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:27:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:27:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4510 transitions. [2022-07-12 10:27:09,929 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7670068027210885 [2022-07-12 10:27:09,929 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4510 transitions. [2022-07-12 10:27:09,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4510 transitions. [2022-07-12 10:27:09,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:09,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4510 transitions. [2022-07-12 10:27:09,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.07142857142858) internal successors, (4510), 28 states have internal predecessors, (4510), 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) [2022-07-12 10:27:09,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:27:09,935 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:27:09,935 INFO L186 Difference]: Start difference. First operand has 939 places, 754 transitions, 17725 flow. Second operand 28 states and 4510 transitions. [2022-07-12 10:27:09,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 951 places, 838 transitions, 21409 flow [2022-07-12 10:27:10,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 838 transitions, 20996 flow, removed 81 selfloop flow, removed 14 redundant places. [2022-07-12 10:27:10,950 INFO L242 Difference]: Finished difference. Result has 949 places, 762 transitions, 18066 flow [2022-07-12 10:27:10,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17365, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18066, PETRI_PLACES=949, PETRI_TRANSITIONS=762} [2022-07-12 10:27:10,950 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 762 predicate places. [2022-07-12 10:27:10,950 INFO L495 AbstractCegarLoop]: Abstraction has has 949 places, 762 transitions, 18066 flow [2022-07-12 10:27:10,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:10,951 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:10,951 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:10,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-07-12 10:27:10,951 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1234358012, now seen corresponding path program 95 times [2022-07-12 10:27:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:10,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051705174] [2022-07-12 10:27:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:10,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:11,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:11,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051705174] [2022-07-12 10:27:11,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051705174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:11,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:11,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067475491] [2022-07-12 10:27:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:11,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:11,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:11,055 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:11,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 762 transitions, 18066 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:11,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:11,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:11,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:12,828 INFO L129 PetriNetUnfolder]: 832/3189 cut-off events. [2022-07-12 10:27:12,828 INFO L130 PetriNetUnfolder]: For 102691/102730 co-relation queries the response was YES. [2022-07-12 10:27:12,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26681 conditions, 3189 events. 832/3189 cut-off events. For 102691/102730 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27048 event pairs, 368 based on Foata normal form. 11/3129 useless extension candidates. Maximal degree in co-relation 26314. Up to 951 conditions per place. [2022-07-12 10:27:12,924 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 407 selfloop transitions, 230 changer transitions 59/845 dead transitions. [2022-07-12 10:27:12,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 965 places, 845 transitions, 21653 flow [2022-07-12 10:27:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-07-12 10:27:12,926 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-07-12 10:27:12,926 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-07-12 10:27:12,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-07-12 10:27:12,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:12,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-07-12 10:27:12,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 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) [2022-07-12 10:27:12,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:12,933 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:12,933 INFO L186 Difference]: Start difference. First operand has 949 places, 762 transitions, 18066 flow. Second operand 30 states and 4821 transitions. [2022-07-12 10:27:12,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 965 places, 845 transitions, 21653 flow [2022-07-12 10:27:13,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 949 places, 845 transitions, 21185 flow, removed 70 selfloop flow, removed 16 redundant places. [2022-07-12 10:27:13,836 INFO L242 Difference]: Finished difference. Result has 963 places, 774 transitions, 18545 flow [2022-07-12 10:27:13,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17639, PETRI_DIFFERENCE_MINUEND_PLACES=920, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18545, PETRI_PLACES=963, PETRI_TRANSITIONS=774} [2022-07-12 10:27:13,837 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 776 predicate places. [2022-07-12 10:27:13,837 INFO L495 AbstractCegarLoop]: Abstraction has has 963 places, 774 transitions, 18545 flow [2022-07-12 10:27:13,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:13,838 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:13,838 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:13,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-07-12 10:27:13,838 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2068322910, now seen corresponding path program 96 times [2022-07-12 10:27:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:13,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554923666] [2022-07-12 10:27:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:13,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:13,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554923666] [2022-07-12 10:27:13,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554923666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:13,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:13,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522679836] [2022-07-12 10:27:13,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:13,957 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:13,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 963 places, 774 transitions, 18545 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:13,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:13,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:13,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:15,695 INFO L129 PetriNetUnfolder]: 824/3168 cut-off events. [2022-07-12 10:27:15,695 INFO L130 PetriNetUnfolder]: For 105597/105653 co-relation queries the response was YES. [2022-07-12 10:27:15,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26647 conditions, 3168 events. 824/3168 cut-off events. For 105597/105653 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 26890 event pairs, 365 based on Foata normal form. 13/3111 useless extension candidates. Maximal degree in co-relation 26276. Up to 948 conditions per place. [2022-07-12 10:27:15,790 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 238 changer transitions 61/847 dead transitions. [2022-07-12 10:27:15,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 976 places, 847 transitions, 21894 flow [2022-07-12 10:27:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:27:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:27:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-07-12 10:27:15,792 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-07-12 10:27:15,792 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-07-12 10:27:15,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-07-12 10:27:15,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:15,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-07-12 10:27:15,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 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) [2022-07-12 10:27:15,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:15,799 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:15,799 INFO L186 Difference]: Start difference. First operand has 963 places, 774 transitions, 18545 flow. Second operand 29 states and 4663 transitions. [2022-07-12 10:27:15,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 976 places, 847 transitions, 21894 flow [2022-07-12 10:27:16,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 964 places, 847 transitions, 21525 flow, removed 66 selfloop flow, removed 12 redundant places. [2022-07-12 10:27:16,744 INFO L242 Difference]: Finished difference. Result has 977 places, 776 transitions, 18840 flow [2022-07-12 10:27:16,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18234, PETRI_DIFFERENCE_MINUEND_PLACES=936, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18840, PETRI_PLACES=977, PETRI_TRANSITIONS=776} [2022-07-12 10:27:16,745 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 790 predicate places. [2022-07-12 10:27:16,745 INFO L495 AbstractCegarLoop]: Abstraction has has 977 places, 776 transitions, 18840 flow [2022-07-12 10:27:16,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:16,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:16,745 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:16,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-07-12 10:27:16,745 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1486527116, now seen corresponding path program 97 times [2022-07-12 10:27:16,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:16,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355907987] [2022-07-12 10:27:16,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:16,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:16,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355907987] [2022-07-12 10:27:16,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355907987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:16,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:16,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050145002] [2022-07-12 10:27:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:16,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:16,846 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:16,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 776 transitions, 18840 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:16,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:16,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:16,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:18,591 INFO L129 PetriNetUnfolder]: 799/3089 cut-off events. [2022-07-12 10:27:18,591 INFO L130 PetriNetUnfolder]: For 101833/101872 co-relation queries the response was YES. [2022-07-12 10:27:18,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25824 conditions, 3089 events. 799/3089 cut-off events. For 101833/101872 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 26005 event pairs, 355 based on Foata normal form. 11/3031 useless extension candidates. Maximal degree in co-relation 25448. Up to 937 conditions per place. [2022-07-12 10:27:18,685 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 449 selfloop transitions, 164 changer transitions 67/829 dead transitions. [2022-07-12 10:27:18,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 992 places, 829 transitions, 21447 flow [2022-07-12 10:27:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:18,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:18,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-07-12 10:27:18,687 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-07-12 10:27:18,687 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-07-12 10:27:18,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-07-12 10:27:18,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:18,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-07-12 10:27:18,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 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) [2022-07-12 10:27:18,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:18,693 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:18,693 INFO L186 Difference]: Start difference. First operand has 977 places, 776 transitions, 18840 flow. Second operand 30 states and 4816 transitions. [2022-07-12 10:27:18,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 992 places, 829 transitions, 21447 flow [2022-07-12 10:27:19,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 975 places, 829 transitions, 21009 flow, removed 71 selfloop flow, removed 17 redundant places. [2022-07-12 10:27:19,609 INFO L242 Difference]: Finished difference. Result has 986 places, 748 transitions, 17893 flow [2022-07-12 10:27:19,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18434, PETRI_DIFFERENCE_MINUEND_PLACES=946, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17893, PETRI_PLACES=986, PETRI_TRANSITIONS=748} [2022-07-12 10:27:19,610 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 799 predicate places. [2022-07-12 10:27:19,610 INFO L495 AbstractCegarLoop]: Abstraction has has 986 places, 748 transitions, 17893 flow [2022-07-12 10:27:19,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:19,610 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:19,610 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:19,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-07-12 10:27:19,610 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:19,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:19,610 INFO L85 PathProgramCache]: Analyzing trace with hash -746357406, now seen corresponding path program 98 times [2022-07-12 10:27:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:19,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260727350] [2022-07-12 10:27:19,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:19,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:19,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:19,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260727350] [2022-07-12 10:27:19,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260727350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:19,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:19,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:19,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582289528] [2022-07-12 10:27:19,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:19,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:19,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:19,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:19,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:19,740 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:19,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 986 places, 748 transitions, 17893 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:19,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:19,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:19,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:21,471 INFO L129 PetriNetUnfolder]: 807/3126 cut-off events. [2022-07-12 10:27:21,471 INFO L130 PetriNetUnfolder]: For 103884/103923 co-relation queries the response was YES. [2022-07-12 10:27:21,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26194 conditions, 3126 events. 807/3126 cut-off events. For 103884/103923 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26400 event pairs, 361 based on Foata normal form. 11/3068 useless extension candidates. Maximal degree in co-relation 25819. Up to 941 conditions per place. [2022-07-12 10:27:21,566 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 452 selfloop transitions, 171 changer transitions 60/832 dead transitions. [2022-07-12 10:27:21,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 979 places, 832 transitions, 21671 flow [2022-07-12 10:27:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:27:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:27:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4671 transitions. [2022-07-12 10:27:21,568 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7669950738916256 [2022-07-12 10:27:21,568 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4671 transitions. [2022-07-12 10:27:21,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4671 transitions. [2022-07-12 10:27:21,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:21,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4671 transitions. [2022-07-12 10:27:21,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.06896551724137) internal successors, (4671), 29 states have internal predecessors, (4671), 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) [2022-07-12 10:27:21,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:21,574 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:21,574 INFO L186 Difference]: Start difference. First operand has 986 places, 748 transitions, 17893 flow. Second operand 29 states and 4671 transitions. [2022-07-12 10:27:21,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 979 places, 832 transitions, 21671 flow [2022-07-12 10:27:22,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 832 transitions, 20851 flow, removed 51 selfloop flow, removed 34 redundant places. [2022-07-12 10:27:22,467 INFO L242 Difference]: Finished difference. Result has 959 places, 760 transitions, 18057 flow [2022-07-12 10:27:22,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17256, PETRI_DIFFERENCE_MINUEND_PLACES=917, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18057, PETRI_PLACES=959, PETRI_TRANSITIONS=760} [2022-07-12 10:27:22,468 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 772 predicate places. [2022-07-12 10:27:22,468 INFO L495 AbstractCegarLoop]: Abstraction has has 959 places, 760 transitions, 18057 flow [2022-07-12 10:27:22,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:22,469 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:22,469 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:22,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-07-12 10:27:22,469 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:22,469 INFO L85 PathProgramCache]: Analyzing trace with hash 196424024, now seen corresponding path program 99 times [2022-07-12 10:27:22,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:22,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985753759] [2022-07-12 10:27:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:22,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:22,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985753759] [2022-07-12 10:27:22,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985753759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:22,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:22,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:22,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041724355] [2022-07-12 10:27:22,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:22,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:22,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:22,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:22,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:22,579 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:22,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 760 transitions, 18057 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:22,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:22,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:22,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:24,210 INFO L129 PetriNetUnfolder]: 805/3110 cut-off events. [2022-07-12 10:27:24,210 INFO L130 PetriNetUnfolder]: For 99490/99529 co-relation queries the response was YES. [2022-07-12 10:27:24,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25886 conditions, 3110 events. 805/3110 cut-off events. For 99490/99529 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26199 event pairs, 356 based on Foata normal form. 11/3053 useless extension candidates. Maximal degree in co-relation 25518. Up to 943 conditions per place. [2022-07-12 10:27:24,310 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 455 selfloop transitions, 176 changer transitions 60/840 dead transitions. [2022-07-12 10:27:24,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 840 transitions, 21697 flow [2022-07-12 10:27:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:27:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:27:24,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4669 transitions. [2022-07-12 10:27:24,313 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-07-12 10:27:24,313 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4669 transitions. [2022-07-12 10:27:24,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4669 transitions. [2022-07-12 10:27:24,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:24,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4669 transitions. [2022-07-12 10:27:24,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0) internal successors, (4669), 29 states have internal predecessors, (4669), 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) [2022-07-12 10:27:24,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:24,319 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:24,319 INFO L186 Difference]: Start difference. First operand has 959 places, 760 transitions, 18057 flow. Second operand 29 states and 4669 transitions. [2022-07-12 10:27:24,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 840 transitions, 21697 flow [2022-07-12 10:27:25,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 960 places, 840 transitions, 21316 flow, removed 68 selfloop flow, removed 13 redundant places. [2022-07-12 10:27:25,197 INFO L242 Difference]: Finished difference. Result has 974 places, 772 transitions, 18573 flow [2022-07-12 10:27:25,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17743, PETRI_DIFFERENCE_MINUEND_PLACES=932, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18573, PETRI_PLACES=974, PETRI_TRANSITIONS=772} [2022-07-12 10:27:25,198 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 787 predicate places. [2022-07-12 10:27:25,198 INFO L495 AbstractCegarLoop]: Abstraction has has 974 places, 772 transitions, 18573 flow [2022-07-12 10:27:25,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:25,199 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:25,199 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:25,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-07-12 10:27:25,199 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:25,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash 514081778, now seen corresponding path program 100 times [2022-07-12 10:27:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:25,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484521338] [2022-07-12 10:27:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:25,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:25,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:25,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484521338] [2022-07-12 10:27:25,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484521338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:25,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:25,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820045179] [2022-07-12 10:27:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:25,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:25,314 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:25,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 974 places, 772 transitions, 18573 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:25,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:25,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:25,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:27,033 INFO L129 PetriNetUnfolder]: 789/3067 cut-off events. [2022-07-12 10:27:27,033 INFO L130 PetriNetUnfolder]: For 97753/97809 co-relation queries the response was YES. [2022-07-12 10:27:27,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25423 conditions, 3067 events. 789/3067 cut-off events. For 97753/97809 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25832 event pairs, 355 based on Foata normal form. 13/3012 useless extension candidates. Maximal degree in co-relation 25049. Up to 934 conditions per place. [2022-07-12 10:27:27,124 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 452 selfloop transitions, 157 changer transitions 66/824 dead transitions. [2022-07-12 10:27:27,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 989 places, 824 transitions, 21154 flow [2022-07-12 10:27:27,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:27,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-07-12 10:27:27,126 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-07-12 10:27:27,126 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-07-12 10:27:27,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-07-12 10:27:27,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:27,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-07-12 10:27:27,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 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) [2022-07-12 10:27:27,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:27,132 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:27,133 INFO L186 Difference]: Start difference. First operand has 974 places, 772 transitions, 18573 flow. Second operand 30 states and 4820 transitions. [2022-07-12 10:27:27,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 989 places, 824 transitions, 21154 flow [2022-07-12 10:27:28,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 976 places, 824 transitions, 20754 flow, removed 76 selfloop flow, removed 13 redundant places. [2022-07-12 10:27:28,030 INFO L242 Difference]: Finished difference. Result has 985 places, 750 transitions, 17840 flow [2022-07-12 10:27:28,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18203, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17840, PETRI_PLACES=985, PETRI_TRANSITIONS=750} [2022-07-12 10:27:28,031 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 798 predicate places. [2022-07-12 10:27:28,032 INFO L495 AbstractCegarLoop]: Abstraction has has 985 places, 750 transitions, 17840 flow [2022-07-12 10:27:28,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:28,032 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:28,032 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:28,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-07-12 10:27:28,032 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:28,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:28,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1874850472, now seen corresponding path program 101 times [2022-07-12 10:27:28,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:28,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356918529] [2022-07-12 10:27:28,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:28,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:28,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:28,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356918529] [2022-07-12 10:27:28,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356918529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:28,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:28,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:28,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608065045] [2022-07-12 10:27:28,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:28,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:28,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:28,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:28,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:28,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:28,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 985 places, 750 transitions, 17840 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:28,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:28,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:28,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:29,840 INFO L129 PetriNetUnfolder]: 776/3017 cut-off events. [2022-07-12 10:27:29,840 INFO L130 PetriNetUnfolder]: For 96950/97006 co-relation queries the response was YES. [2022-07-12 10:27:29,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24823 conditions, 3017 events. 776/3017 cut-off events. For 96950/97006 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25255 event pairs, 352 based on Foata normal form. 13/2962 useless extension candidates. Maximal degree in co-relation 24448. Up to 934 conditions per place. [2022-07-12 10:27:29,932 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 401 selfloop transitions, 185 changer transitions 65/800 dead transitions. [2022-07-12 10:27:29,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 800 transitions, 20337 flow [2022-07-12 10:27:29,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:27:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-12 10:27:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4499 transitions. [2022-07-12 10:27:29,934 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7651360544217687 [2022-07-12 10:27:29,934 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4499 transitions. [2022-07-12 10:27:29,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4499 transitions. [2022-07-12 10:27:29,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:29,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4499 transitions. [2022-07-12 10:27:29,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.67857142857142) internal successors, (4499), 28 states have internal predecessors, (4499), 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) [2022-07-12 10:27:29,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:27:29,940 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 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) [2022-07-12 10:27:29,940 INFO L186 Difference]: Start difference. First operand has 985 places, 750 transitions, 17840 flow. Second operand 28 states and 4499 transitions. [2022-07-12 10:27:29,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 800 transitions, 20337 flow [2022-07-12 10:27:30,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 800 transitions, 19785 flow, removed 38 selfloop flow, removed 30 redundant places. [2022-07-12 10:27:30,791 INFO L242 Difference]: Finished difference. Result has 964 places, 725 transitions, 16981 flow [2022-07-12 10:27:30,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17343, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16981, PETRI_PLACES=964, PETRI_TRANSITIONS=725} [2022-07-12 10:27:30,792 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 777 predicate places. [2022-07-12 10:27:30,792 INFO L495 AbstractCegarLoop]: Abstraction has has 964 places, 725 transitions, 16981 flow [2022-07-12 10:27:30,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:30,792 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:30,792 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:30,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-07-12 10:27:30,792 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:30,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1432532484, now seen corresponding path program 102 times [2022-07-12 10:27:30,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:30,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020742311] [2022-07-12 10:27:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:30,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:30,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:30,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020742311] [2022-07-12 10:27:30,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020742311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:30,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:30,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:30,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139218073] [2022-07-12 10:27:30,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:30,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:30,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:30,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:30,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:30,904 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:30,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 725 transitions, 16981 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:30,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:30,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:30,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:32,496 INFO L129 PetriNetUnfolder]: 779/3015 cut-off events. [2022-07-12 10:27:32,496 INFO L130 PetriNetUnfolder]: For 94957/95013 co-relation queries the response was YES. [2022-07-12 10:27:32,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24811 conditions, 3015 events. 779/3015 cut-off events. For 94957/95013 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25233 event pairs, 349 based on Foata normal form. 13/2960 useless extension candidates. Maximal degree in co-relation 24445. Up to 932 conditions per place. [2022-07-12 10:27:32,584 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 423 selfloop transitions, 176 changer transitions 59/807 dead transitions. [2022-07-12 10:27:32,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 807 transitions, 20571 flow [2022-07-12 10:27:32,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:27:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:27:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4665 transitions. [2022-07-12 10:27:32,587 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7660098522167488 [2022-07-12 10:27:32,587 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4665 transitions. [2022-07-12 10:27:32,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4665 transitions. [2022-07-12 10:27:32,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:32,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4665 transitions. [2022-07-12 10:27:32,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.86206896551724) internal successors, (4665), 29 states have internal predecessors, (4665), 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) [2022-07-12 10:27:32,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:32,593 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:32,593 INFO L186 Difference]: Start difference. First operand has 964 places, 725 transitions, 16981 flow. Second operand 29 states and 4665 transitions. [2022-07-12 10:27:32,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 807 transitions, 20571 flow [2022-07-12 10:27:33,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 807 transitions, 19653 flow, removed 32 selfloop flow, removed 32 redundant places. [2022-07-12 10:27:33,405 INFO L242 Difference]: Finished difference. Result has 941 places, 737 transitions, 17000 flow [2022-07-12 10:27:33,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16220, PETRI_DIFFERENCE_MINUEND_PLACES=899, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17000, PETRI_PLACES=941, PETRI_TRANSITIONS=737} [2022-07-12 10:27:33,406 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 754 predicate places. [2022-07-12 10:27:33,406 INFO L495 AbstractCegarLoop]: Abstraction has has 941 places, 737 transitions, 17000 flow [2022-07-12 10:27:33,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:33,406 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:33,406 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:33,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-07-12 10:27:33,407 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:33,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:33,407 INFO L85 PathProgramCache]: Analyzing trace with hash 861471804, now seen corresponding path program 103 times [2022-07-12 10:27:33,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:33,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743921633] [2022-07-12 10:27:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:33,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:33,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:33,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743921633] [2022-07-12 10:27:33,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743921633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:33,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:33,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379072495] [2022-07-12 10:27:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:33,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:33,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:33,527 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:33,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 941 places, 737 transitions, 17000 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:33,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:33,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:33,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:35,166 INFO L129 PetriNetUnfolder]: 783/3046 cut-off events. [2022-07-12 10:27:35,166 INFO L130 PetriNetUnfolder]: For 91962/92018 co-relation queries the response was YES. [2022-07-12 10:27:35,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24924 conditions, 3046 events. 783/3046 cut-off events. For 91962/92018 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25584 event pairs, 352 based on Foata normal form. 13/2992 useless extension candidates. Maximal degree in co-relation 24563. Up to 934 conditions per place. [2022-07-12 10:27:35,248 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 428 selfloop transitions, 180 changer transitions 61/818 dead transitions. [2022-07-12 10:27:35,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 955 places, 818 transitions, 20559 flow [2022-07-12 10:27:35,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:27:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-12 10:27:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2022-07-12 10:27:35,250 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2022-07-12 10:27:35,250 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2022-07-12 10:27:35,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2022-07-12 10:27:35,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:35,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2022-07-12 10:27:35,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 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) [2022-07-12 10:27:35,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:35,256 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 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) [2022-07-12 10:27:35,256 INFO L186 Difference]: Start difference. First operand has 941 places, 737 transitions, 17000 flow. Second operand 29 states and 4667 transitions. [2022-07-12 10:27:35,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 955 places, 818 transitions, 20559 flow [2022-07-12 10:27:36,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 818 transitions, 20184 flow, removed 62 selfloop flow, removed 13 redundant places. [2022-07-12 10:27:36,058 INFO L242 Difference]: Finished difference. Result has 955 places, 748 transitions, 17481 flow [2022-07-12 10:27:36,059 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16689, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17481, PETRI_PLACES=955, PETRI_TRANSITIONS=748} [2022-07-12 10:27:36,059 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 768 predicate places. [2022-07-12 10:27:36,059 INFO L495 AbstractCegarLoop]: Abstraction has has 955 places, 748 transitions, 17481 flow [2022-07-12 10:27:36,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:36,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:36,060 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:36,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-07-12 10:27:36,060 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2001827546, now seen corresponding path program 104 times [2022-07-12 10:27:36,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:36,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226469060] [2022-07-12 10:27:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:36,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:36,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:36,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226469060] [2022-07-12 10:27:36,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226469060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:36,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:36,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:36,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681171409] [2022-07-12 10:27:36,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:36,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:36,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:36,160 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:36,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 955 places, 748 transitions, 17481 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:36,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:36,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:36,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:37,775 INFO L129 PetriNetUnfolder]: 765/2992 cut-off events. [2022-07-12 10:27:37,775 INFO L130 PetriNetUnfolder]: For 91510/91566 co-relation queries the response was YES. [2022-07-12 10:27:37,852 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24241 conditions, 2992 events. 765/2992 cut-off events. For 91510/91566 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25011 event pairs, 347 based on Foata normal form. 13/2938 useless extension candidates. Maximal degree in co-relation 23875. Up to 927 conditions per place. [2022-07-12 10:27:37,866 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 422 selfloop transitions, 161 changer transitions 66/798 dead transitions. [2022-07-12 10:27:37,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 970 places, 798 transitions, 19937 flow [2022-07-12 10:27:37,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-07-12 10:27:37,868 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-07-12 10:27:37,868 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-07-12 10:27:37,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-07-12 10:27:37,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:37,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-07-12 10:27:37,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 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) [2022-07-12 10:27:37,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:37,875 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:37,875 INFO L186 Difference]: Start difference. First operand has 955 places, 748 transitions, 17481 flow. Second operand 30 states and 4816 transitions. [2022-07-12 10:27:37,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 970 places, 798 transitions, 19937 flow [2022-07-12 10:27:38,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 957 places, 798 transitions, 19534 flow, removed 76 selfloop flow, removed 13 redundant places. [2022-07-12 10:27:38,665 INFO L242 Difference]: Finished difference. Result has 964 places, 724 transitions, 16709 flow [2022-07-12 10:27:38,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17117, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16709, PETRI_PLACES=964, PETRI_TRANSITIONS=724} [2022-07-12 10:27:38,665 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 777 predicate places. [2022-07-12 10:27:38,665 INFO L495 AbstractCegarLoop]: Abstraction has has 964 places, 724 transitions, 16709 flow [2022-07-12 10:27:38,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:38,666 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:38,666 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:38,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-07-12 10:27:38,666 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 635445222, now seen corresponding path program 105 times [2022-07-12 10:27:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:38,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862809653] [2022-07-12 10:27:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:38,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:38,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:38,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862809653] [2022-07-12 10:27:38,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862809653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:38,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:38,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:38,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354277173] [2022-07-12 10:27:38,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:38,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:38,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:38,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:38,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:38,766 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:38,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 964 places, 724 transitions, 16709 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:38,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:38,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:38,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:40,396 INFO L129 PetriNetUnfolder]: 758/2966 cut-off events. [2022-07-12 10:27:40,396 INFO L130 PetriNetUnfolder]: For 90768/90807 co-relation queries the response was YES. [2022-07-12 10:27:40,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24003 conditions, 2966 events. 758/2966 cut-off events. For 90768/90807 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 24744 event pairs, 338 based on Foata normal form. 11/2910 useless extension candidates. Maximal degree in co-relation 23638. Up to 928 conditions per place. [2022-07-12 10:27:40,483 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 426 selfloop transitions, 171 changer transitions 62/808 dead transitions. [2022-07-12 10:27:40,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 966 places, 808 transitions, 20290 flow [2022-07-12 10:27:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-07-12 10:27:40,485 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-07-12 10:27:40,485 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-07-12 10:27:40,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-07-12 10:27:40,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:40,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-07-12 10:27:40,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 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) [2022-07-12 10:27:40,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:40,491 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:40,491 INFO L186 Difference]: Start difference. First operand has 964 places, 724 transitions, 16709 flow. Second operand 30 states and 4823 transitions. [2022-07-12 10:27:40,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 966 places, 808 transitions, 20290 flow [2022-07-12 10:27:41,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 808 transitions, 19619 flow, removed 31 selfloop flow, removed 40 redundant places. [2022-07-12 10:27:41,244 INFO L242 Difference]: Finished difference. Result has 939 places, 730 transitions, 16694 flow [2022-07-12 10:27:41,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16093, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16694, PETRI_PLACES=939, PETRI_TRANSITIONS=730} [2022-07-12 10:27:41,244 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 752 predicate places. [2022-07-12 10:27:41,244 INFO L495 AbstractCegarLoop]: Abstraction has has 939 places, 730 transitions, 16694 flow [2022-07-12 10:27:41,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:41,245 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:41,245 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:41,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-07-12 10:27:41,245 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1615111364, now seen corresponding path program 106 times [2022-07-12 10:27:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:41,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679412111] [2022-07-12 10:27:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:41,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:41,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679412111] [2022-07-12 10:27:41,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679412111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:41,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:41,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:41,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911107315] [2022-07-12 10:27:41,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:41,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:41,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:41,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:41,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:41,357 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:41,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 730 transitions, 16694 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:41,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:41,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:41,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:27:42,927 INFO L129 PetriNetUnfolder]: 765/2981 cut-off events. [2022-07-12 10:27:42,927 INFO L130 PetriNetUnfolder]: For 89182/89221 co-relation queries the response was YES. [2022-07-12 10:27:43,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24136 conditions, 2981 events. 765/2981 cut-off events. For 89182/89221 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 24857 event pairs, 334 based on Foata normal form. 11/2923 useless extension candidates. Maximal degree in co-relation 23783. Up to 926 conditions per place. [2022-07-12 10:27:43,012 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 398 selfloop transitions, 211 changer transitions 62/820 dead transitions. [2022-07-12 10:27:43,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 820 transitions, 20547 flow [2022-07-12 10:27:43,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-12 10:27:43,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-07-12 10:27:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-07-12 10:27:43,015 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-07-12 10:27:43,015 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-07-12 10:27:43,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-07-12 10:27:43,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:27:43,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-07-12 10:27:43,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 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) [2022-07-12 10:27:43,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:43,021 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 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) [2022-07-12 10:27:43,021 INFO L186 Difference]: Start difference. First operand has 939 places, 730 transitions, 16694 flow. Second operand 30 states and 4819 transitions. [2022-07-12 10:27:43,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 820 transitions, 20547 flow [2022-07-12 10:27:43,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 820 transitions, 20195 flow, removed 75 selfloop flow, removed 13 redundant places. [2022-07-12 10:27:43,751 INFO L242 Difference]: Finished difference. Result has 953 places, 743 transitions, 17323 flow [2022-07-12 10:27:43,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16375, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17323, PETRI_PLACES=953, PETRI_TRANSITIONS=743} [2022-07-12 10:27:43,752 INFO L279 CegarLoopForPetriNet]: 187 programPoint places, 766 predicate places. [2022-07-12 10:27:43,752 INFO L495 AbstractCegarLoop]: Abstraction has has 953 places, 743 transitions, 17323 flow [2022-07-12 10:27:43,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:43,753 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:27:43,753 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:27:43,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-07-12 10:27:43,753 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 10:27:43,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:27:43,753 INFO L85 PathProgramCache]: Analyzing trace with hash 879598296, now seen corresponding path program 107 times [2022-07-12 10:27:43,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:27:43,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483324806] [2022-07-12 10:27:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:27:43,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:27:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:27:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:27:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:27:43,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483324806] [2022-07-12 10:27:43,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483324806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:27:43,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:27:43,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 10:27:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308931608] [2022-07-12 10:27:43,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:27:43,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 10:27:43,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:27:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 10:27:43,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:27:43,863 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-07-12 10:27:43,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 743 transitions, 17323 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 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) [2022-07-12 10:27:43,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:27:43,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-07-12 10:27:43,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand